/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-None-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/nonblocking-counter-alt2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 23:20:18,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 23:20:18,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 23:20:18,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 23:20:18,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-None-NoLbe.epf [2021-07-13 23:20:18,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 23:20:18,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 23:20:18,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 23:20:18,411 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 23:20:18,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 23:20:18,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 23:20:18,414 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 23:20:18,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 23:20:18,414 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 23:20:18,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 23:20:18,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 23:20:18,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 23:20:18,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 23:20:18,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 23:20:18,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 23:20:18,416 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 23:20:18,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 23:20:18,416 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 23:20:18,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 23:20:18,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 23:20:18,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 23:20:18,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 23:20:18,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 23:20:18,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 23:20:18,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 23:20:18,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 23:20:18,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 23:20:18,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 23:20:18,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 23:20:18,418 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 23:20:18,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-13 23:20:18,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 23:20:18,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 23:20:18,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 23:20:18,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 23:20:18,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 23:20:18,819 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 23:20:18,820 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 23:20:18,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/nonblocking-counter-alt2.wvr.bpl [2021-07-13 23:20:18,821 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/nonblocking-counter-alt2.wvr.bpl' [2021-07-13 23:20:18,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 23:20:18,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 23:20:18,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 23:20:18,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 23:20:18,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 23:20:18,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:20:18" (1/1) ... [2021-07-13 23:20:18,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:20:18" (1/1) ... [2021-07-13 23:20:18,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 23:20:18,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 23:20:18,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 23:20:18,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 23:20:18,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:20:18" (1/1) ... [2021-07-13 23:20:18,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:20:18" (1/1) ... [2021-07-13 23:20:18,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:20:18" (1/1) ... [2021-07-13 23:20:18,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:20:18" (1/1) ... [2021-07-13 23:20:18,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:20:18" (1/1) ... [2021-07-13 23:20:18,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:20:18" (1/1) ... [2021-07-13 23:20:18,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:20:18" (1/1) ... [2021-07-13 23:20:18,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 23:20:18,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 23:20:18,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 23:20:18,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 23:20:18,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:20:18" (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 [2021-07-13 23:20:18,983 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 23:20:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 23:20:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 23:20:18,984 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 23:20:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 23:20:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 23:20:18,985 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 23:20:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 23:20:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 23:20:18,986 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 23:20:19,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 23:20:19,139 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-13 23:20:19,140 INFO L202 PluginConnector]: Adding new model nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:20:19 BoogieIcfgContainer [2021-07-13 23:20:19,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 23:20:19,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 23:20:19,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 23:20:19,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 23:20:19,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:20:18" (1/2) ... [2021-07-13 23:20:19,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1367b6a0 and model type nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:20:19, skipping insertion in model container [2021-07-13 23:20:19,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:20:19" (2/2) ... [2021-07-13 23:20:19,147 INFO L111 eAbstractionObserver]: Analyzing ICFG nonblocking-counter-alt2.wvr.bpl [2021-07-13 23:20:19,152 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 23:20:19,152 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 23:20:19,152 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 23:20:19,153 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 23:20:19,177 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-13 23:20:19,212 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-13 23:20:19,332 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 23:20:19,332 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 23:20:19,332 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 23:20:19,332 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 23:20:19,333 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 23:20:19,333 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 23:20:19,333 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 23:20:19,333 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 23:20:19,341 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 23 transitions, 62 flow [2021-07-13 23:20:19,364 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 33 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 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) [2021-07-13 23:20:19,378 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:20:19,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:20:19,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1577148609, now seen corresponding path program 1 times [2021-07-13 23:20:19,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:20:19,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936138280] [2021-07-13 23:20:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:20:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:20:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:19,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:20:19,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936138280] [2021-07-13 23:20:19,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936138280] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:19,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784955480] [2021-07-13 23:20:19,774 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 [2021-07-13 23:20:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:20:19,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-13 23:20:19,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:20:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:20,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784955480] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:20,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:20:20,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-13 23:20:20,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269045739] [2021-07-13 23:20:20,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 23:20:20,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:20:20,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 23:20:20,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-07-13 23:20:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:20,203 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:20:20,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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) [2021-07-13 23:20:20,203 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:20,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-13 23:20:20,541 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:20:20,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:20:20,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1531278985, now seen corresponding path program 2 times [2021-07-13 23:20:20,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:20:20,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755753908] [2021-07-13 23:20:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:20:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:20:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:20,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:20:20,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755753908] [2021-07-13 23:20:20,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755753908] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:20,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010025060] [2021-07-13 23:20:20,729 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 [2021-07-13 23:20:20,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 23:20:20,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 23:20:20,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-13 23:20:20,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:20:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:21,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010025060] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:21,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:20:21,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2021-07-13 23:20:21,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447152006] [2021-07-13 23:20:21,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-13 23:20:21,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:20:21,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-13 23:20:21,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-07-13 23:20:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:21,110 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:20:21,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:20:21,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:21,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:21,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:21,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 23:20:21,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 23:20:21,769 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:20:21,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:20:21,769 INFO L82 PathProgramCache]: Analyzing trace with hash 416752665, now seen corresponding path program 3 times [2021-07-13 23:20:21,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:20:21,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741392181] [2021-07-13 23:20:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:20:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:20:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:22,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:20:22,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741392181] [2021-07-13 23:20:22,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741392181] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:22,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154033952] [2021-07-13 23:20:22,466 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 [2021-07-13 23:20:22,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-07-13 23:20:22,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 23:20:22,511 WARN L261 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 42 conjunts are in the unsatisfiable core [2021-07-13 23:20:22,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:20:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:23,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154033952] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:23,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:20:23,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2021-07-13 23:20:23,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211355657] [2021-07-13 23:20:23,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-13 23:20:23,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:20:23,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-13 23:20:23,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2021-07-13 23:20:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:23,506 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:20:23,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 35 states have internal predecessors, (68), 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) [2021-07-13 23:20:23,507 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:23,507 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-13 23:20:23,507 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:24,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:24,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:24,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 23:20:24,752 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:20:24,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:20:24,752 INFO L82 PathProgramCache]: Analyzing trace with hash 914058587, now seen corresponding path program 4 times [2021-07-13 23:20:24,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:20:24,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562354292] [2021-07-13 23:20:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:20:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:20:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 62 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 23:20:25,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:20:25,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562354292] [2021-07-13 23:20:25,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562354292] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:25,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356352326] [2021-07-13 23:20:25,002 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 [2021-07-13 23:20:25,041 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 23:20:25,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 23:20:25,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 44 conjunts are in the unsatisfiable core [2021-07-13 23:20:25,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:20:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:26,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356352326] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:26,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:20:26,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 39 [2021-07-13 23:20:26,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673775319] [2021-07-13 23:20:26,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-07-13 23:20:26,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:20:26,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-07-13 23:20:26,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1337, Unknown=0, NotChecked=0, Total=1560 [2021-07-13 23:20:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:26,097 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:20:26,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.2) internal successors, (88), 39 states have internal predecessors, (88), 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) [2021-07-13 23:20:26,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:26,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:26,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:26,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 23:20:27,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-07-13 23:20:27,381 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:20:27,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:20:27,382 INFO L82 PathProgramCache]: Analyzing trace with hash 464906917, now seen corresponding path program 5 times [2021-07-13 23:20:27,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:20:27,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772601997] [2021-07-13 23:20:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:20:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:20:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 98 proven. 121 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 23:20:27,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:20:27,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772601997] [2021-07-13 23:20:27,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772601997] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:27,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870608909] [2021-07-13 23:20:27,678 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 [2021-07-13 23:20:27,744 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-07-13 23:20:27,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 23:20:27,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 57 conjunts are in the unsatisfiable core [2021-07-13 23:20:27,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:20:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:29,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870608909] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:29,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:20:29,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27] total 49 [2021-07-13 23:20:29,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899440847] [2021-07-13 23:20:29,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-07-13 23:20:29,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:20:29,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-07-13 23:20:29,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=2118, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 23:20:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:29,195 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:20:29,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 2.16) internal successors, (108), 49 states have internal predecessors, (108), 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) [2021-07-13 23:20:29,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:29,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:29,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:29,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-07-13 23:20:29,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 23:20:30,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 23:20:31,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-07-13 23:20:31,045 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:20:31,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:20:31,046 INFO L82 PathProgramCache]: Analyzing trace with hash -130697295, now seen corresponding path program 6 times [2021-07-13 23:20:31,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:20:31,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524974198] [2021-07-13 23:20:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:20:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:20:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 194 proven. 173 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 23:20:31,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:20:31,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524974198] [2021-07-13 23:20:31,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524974198] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:31,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84623613] [2021-07-13 23:20:31,451 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 [2021-07-13 23:20:31,504 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-07-13 23:20:31,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 23:20:31,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 65 conjunts are in the unsatisfiable core [2021-07-13 23:20:31,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:20:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:33,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84623613] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:33,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:20:33,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 33] total 61 [2021-07-13 23:20:33,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952485141] [2021-07-13 23:20:33,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-07-13 23:20:33,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:20:33,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-07-13 23:20:33,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=3268, Unknown=0, NotChecked=0, Total=3782 [2021-07-13 23:20:33,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:33,035 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:20:33,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 2.129032258064516) internal successors, (132), 61 states have internal predecessors, (132), 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) [2021-07-13 23:20:33,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:33,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:33,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:33,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-07-13 23:20:33,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-07-13 23:20:33,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 23:20:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 23:20:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 23:20:35,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 23:20:35,511 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:20:35,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:20:35,511 INFO L82 PathProgramCache]: Analyzing trace with hash 490792893, now seen corresponding path program 7 times [2021-07-13 23:20:35,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:20:35,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119906148] [2021-07-13 23:20:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:20:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:20:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 254 proven. 289 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 23:20:36,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:20:36,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119906148] [2021-07-13 23:20:36,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119906148] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:36,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152891445] [2021-07-13 23:20:36,132 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 [2021-07-13 23:20:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:20:36,226 WARN L261 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 100 conjunts are in the unsatisfiable core [2021-07-13 23:20:36,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:20:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 0 proven. 545 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:38,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152891445] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:38,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:20:38,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 39] total 73 [2021-07-13 23:20:38,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650012401] [2021-07-13 23:20:38,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-07-13 23:20:38,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:20:38,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-07-13 23:20:38,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=4744, Unknown=0, NotChecked=0, Total=5402 [2021-07-13 23:20:38,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:38,697 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:20:38,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 2.108108108108108) internal successors, (156), 73 states have internal predecessors, (156), 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) [2021-07-13 23:20:38,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:38,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:38,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:38,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-07-13 23:20:38,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-07-13 23:20:38,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2021-07-13 23:20:38,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 23:20:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 23:20:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 23:20:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-07-13 23:20:41,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 23:20:41,713 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:20:41,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:20:41,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1705519419, now seen corresponding path program 8 times [2021-07-13 23:20:41,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:20:41,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613804401] [2021-07-13 23:20:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:20:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:20:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 322 proven. 361 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 23:20:42,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:20:42,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613804401] [2021-07-13 23:20:42,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613804401] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:42,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981995129] [2021-07-13 23:20:42,358 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 23:20:42,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 23:20:42,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 23:20:42,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 58 conjunts are in the unsatisfiable core [2021-07-13 23:20:42,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:20:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 289 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:43,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981995129] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:43,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:20:43,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41] total 79 [2021-07-13 23:20:43,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441951960] [2021-07-13 23:20:43,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-07-13 23:20:44,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:20:44,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-07-13 23:20:44,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1038, Invalid=5282, Unknown=0, NotChecked=0, Total=6320 [2021-07-13 23:20:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:44,002 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:20:44,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 2.15) internal successors, (172), 79 states have internal predecessors, (172), 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) [2021-07-13 23:20:44,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:44,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:44,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:44,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-07-13 23:20:44,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-07-13 23:20:44,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2021-07-13 23:20:44,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2021-07-13 23:20:44,003 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 23:20:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 23:20:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 23:20:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-07-13 23:20:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-07-13 23:20:46,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 23:20:46,745 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:20:46,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:20:46,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1771101521, now seen corresponding path program 9 times [2021-07-13 23:20:46,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:20:46,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886668060] [2021-07-13 23:20:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:20:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:20:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 0 proven. 761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:48,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:20:48,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886668060] [2021-07-13 23:20:48,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886668060] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:48,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501569781] [2021-07-13 23:20:48,723 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 23:20:48,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-07-13 23:20:48,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 23:20:48,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 72 conjunts are in the unsatisfiable core [2021-07-13 23:20:48,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:20:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 56 proven. 705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:20:51,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501569781] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:51,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:20:51,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 43] total 88 [2021-07-13 23:20:51,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412491180] [2021-07-13 23:20:51,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-07-13 23:20:51,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:20:51,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-07-13 23:20:51,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=7247, Unknown=0, NotChecked=0, Total=7656 [2021-07-13 23:20:51,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:51,582 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:20:51,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 88 states have internal predecessors, (181), 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) [2021-07-13 23:20:51,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:51,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:51,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:51,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-07-13 23:20:51,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2021-07-13 23:20:51,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2021-07-13 23:20:51,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2021-07-13 23:20:51,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 62 states. [2021-07-13 23:20:51,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:20:58,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 23:20:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 23:20:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-13 23:20:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 23:20:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 23:20:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 23:20:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-07-13 23:20:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-07-13 23:20:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-13 23:20:58,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2021-07-13 23:20:58,615 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:20:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:20:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1414165457, now seen corresponding path program 10 times [2021-07-13 23:20:58,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:20:58,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311629415] [2021-07-13 23:20:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:20:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:20:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 482 proven. 445 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-13 23:20:59,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:20:59,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311629415] [2021-07-13 23:20:59,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311629415] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:20:59,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058380026] [2021-07-13 23:20:59,463 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 23:20:59,537 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 23:20:59,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 23:20:59,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 111 conjunts are in the unsatisfiable core [2021-07-13 23:20:59,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:21:10,816 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 1092 DAG size of output: 1005 [2021-07-13 23:21:17,665 WARN L205 SmtUtils]: Spent 6.15 s on a formula simplification. DAG size of input: 6053 DAG size of output: 6019 [2021-07-13 23:21:26,415 WARN L205 SmtUtils]: Spent 6.31 s on a formula simplification. DAG size of input: 6104 DAG size of output: 5978 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown