/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 05:12:25,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 05:12:25,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 05:12:25,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 05:12:25,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe.epf [2021-06-06 05:12:25,184 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 05:12:25,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 05:12:25,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 05:12:25,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 05:12:25,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 05:12:25,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 05:12:25,187 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 05:12:25,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 05:12:25,187 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 05:12:25,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 05:12:25,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 05:12:25,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 05:12:25,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 05:12:25,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 05:12:25,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 05:12:25,188 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 05:12:25,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 05:12:25,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 05:12:25,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 05:12:25,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 05:12:25,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 05:12:25,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 05:12:25,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 05:12:25,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 05:12:25,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 05:12:25,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 05:12:25,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 05:12:25,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 05:12:25,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 05:12:25,190 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 05:12:25,190 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 05:12:25,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 05:12:25,190 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 05:12:25,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 05:12:25,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 05:12:25,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 05:12:25,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 05:12:25,532 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 05:12:25,533 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 05:12:25,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl [2021-06-06 05:12:25,534 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl' [2021-06-06 05:12:25,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 05:12:25,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 05:12:25,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 05:12:25,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 05:12:25,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 05:12:25,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:12:25" (1/1) ... [2021-06-06 05:12:25,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:12:25" (1/1) ... [2021-06-06 05:12:25,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 05:12:25,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 05:12:25,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 05:12:25,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 05:12:25,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:12:25" (1/1) ... [2021-06-06 05:12:25,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:12:25" (1/1) ... [2021-06-06 05:12:25,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:12:25" (1/1) ... [2021-06-06 05:12:25,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:12:25" (1/1) ... [2021-06-06 05:12:25,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:12:25" (1/1) ... [2021-06-06 05:12:25,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:12:25" (1/1) ... [2021-06-06 05:12:25,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:12:25" (1/1) ... [2021-06-06 05:12:25,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 05:12:25,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 05:12:25,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 05:12:25,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 05:12:25,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:12:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 05:12:25,688 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 05:12:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 05:12:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 05:12:25,688 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 05:12:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 05:12:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 05:12:25,689 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 05:12:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 05:12:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 05:12:25,690 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 05:12:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 05:12:25,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 05:12:25,692 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 05:12:25,963 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 05:12:25,963 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 05:12:25,965 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 05:12:25 BoogieIcfgContainer [2021-06-06 05:12:25,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 05:12:25,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 05:12:25,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 05:12:25,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 05:12:25,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:12:25" (1/2) ... [2021-06-06 05:12:25,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a5ceab and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 05:12:25, skipping insertion in model container [2021-06-06 05:12:25,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 05:12:25" (2/2) ... [2021-06-06 05:12:25,971 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl [2021-06-06 05:12:25,976 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 05:12:25,976 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 05:12:25,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 05:12:25,977 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 05:12:26,022 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-06 05:12:26,062 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 [2021-06-06 05:12:26,115 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 05:12:26,115 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 05:12:26,115 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 05:12:26,115 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 05:12:26,115 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 05:12:26,116 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 05:12:26,116 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 05:12:26,116 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 05:12:26,273 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:26,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:26,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1251894929, now seen corresponding path program 1 times [2021-06-06 05:12:26,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:26,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623346601] [2021-06-06 05:12:26,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 05:12:26,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:12:26,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623346601] [2021-06-06 05:12:26,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623346601] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 05:12:26,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 05:12:26,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-06 05:12:26,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509657722] [2021-06-06 05:12:26,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 05:12:26,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:12:26,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 05:12:26,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 05:12:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:26,470 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:12:26,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:12:26,474 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:26,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 05:12:26,552 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:26,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:26,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1367857430, now seen corresponding path program 2 times [2021-06-06 05:12:26,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:26,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216174124] [2021-06-06 05:12:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 05:12:26,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:12:26,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216174124] [2021-06-06 05:12:26,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216174124] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 05:12:26,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 05:12:26,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-06 05:12:26,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082212104] [2021-06-06 05:12:26,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 05:12:26,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:12:26,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 05:12:26,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 05:12:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:26,595 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:12:26,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:12:26,596 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:26,596 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:26,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 05:12:26,624 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:26,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1559591817, now seen corresponding path program 3 times [2021-06-06 05:12:26,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:26,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159184830] [2021-06-06 05:12:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 05:12:26,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:12:26,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159184830] [2021-06-06 05:12:26,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159184830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 05:12:26,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 05:12:26,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-06 05:12:26,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213786579] [2021-06-06 05:12:26,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-06 05:12:26,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:12:26,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-06 05:12:26,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-06 05:12:26,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:26,683 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:12:26,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:12:26,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:26,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:26,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:26,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-06 05:12:26,744 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:26,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:26,745 INFO L82 PathProgramCache]: Analyzing trace with hash -467193816, now seen corresponding path program 1 times [2021-06-06 05:12:26,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:26,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72282572] [2021-06-06 05:12:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:26,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 05:12:26,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:12:26,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72282572] [2021-06-06 05:12:26,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72282572] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 05:12:26,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 05:12:26,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 05:12:26,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387679600] [2021-06-06 05:12:26,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 05:12:26,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:12:26,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 05:12:26,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-06 05:12:26,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:26,792 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:12:26,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:12:26,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:26,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:26,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:26,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:26,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-06 05:12:26,856 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:26,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:26,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1954198291, now seen corresponding path program 4 times [2021-06-06 05:12:26,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:26,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379211787] [2021-06-06 05:12:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 05:12:26,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:12:26,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379211787] [2021-06-06 05:12:26,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379211787] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:26,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891864373] [2021-06-06 05:12:26,955 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:12:27,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 05:12:27,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 05:12:27,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 05:12:27,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 05:12:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 05:12:27,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891864373] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:27,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 05:12:27,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-06-06 05:12:27,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905671618] [2021-06-06 05:12:27,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-06 05:12:27,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:12:27,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-06 05:12:27,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-06-06 05:12:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:27,143 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:12:27,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:12:27,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:27,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:27,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:27,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:27,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:27,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:27,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:27,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:12:27,441 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:27,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:27,442 INFO L82 PathProgramCache]: Analyzing trace with hash 691881653, now seen corresponding path program 5 times [2021-06-06 05:12:27,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:27,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693841567] [2021-06-06 05:12:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 05:12:27,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:12:27,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693841567] [2021-06-06 05:12:27,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693841567] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:27,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282335029] [2021-06-06 05:12:27,553 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:12:27,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 05:12:27,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 05:12:27,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-06 05:12:27,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 05:12:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 05:12:27,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282335029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:27,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 05:12:27,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-06-06 05:12:27,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749327243] [2021-06-06 05:12:27,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 05:12:27,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:12:27,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 05:12:27,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-06-06 05:12:27,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:27,703 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:12:27,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:12:27,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:27,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:27,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:27,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:27,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:27,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:27,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:27,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:27,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:27,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:27,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:28,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:12:28,101 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:28,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:28,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1445595435, now seen corresponding path program 6 times [2021-06-06 05:12:28,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:28,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437976242] [2021-06-06 05:12:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 05:12:28,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:12:28,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437976242] [2021-06-06 05:12:28,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437976242] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:28,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615977588] [2021-06-06 05:12:28,457 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:12:28,493 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 05:12:28,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 05:12:28,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-06 05:12:28,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 05:12:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 05:12:29,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615977588] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:29,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 05:12:29,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2021-06-06 05:12:29,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6940248] [2021-06-06 05:12:29,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-06 05:12:29,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:12:29,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-06 05:12:29,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2021-06-06 05:12:29,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:29,304 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:12:29,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:12:29,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:29,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:29,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:29,305 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:29,305 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:29,305 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:29,305 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:12:29,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:12:29,689 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:29,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:29,690 INFO L82 PathProgramCache]: Analyzing trace with hash 891133841, now seen corresponding path program 7 times [2021-06-06 05:12:29,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:29,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167003915] [2021-06-06 05:12:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-06 05:12:30,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:12:30,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167003915] [2021-06-06 05:12:30,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167003915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:30,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632918333] [2021-06-06 05:12:30,266 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:12:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:30,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-06 05:12:30,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 05:12:31,205 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-06-06 05:12:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 05:12:31,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632918333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:31,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 05:12:31,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2021-06-06 05:12:31,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213130441] [2021-06-06 05:12:31,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-06 05:12:31,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:12:31,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-06 05:12:31,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1001, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 05:12:31,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:31,755 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:12:31,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:12:31,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:31,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:31,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:31,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:31,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:31,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:31,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:12:31,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:12:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:12:32,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-06 05:12:32,329 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:32,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1539375087, now seen corresponding path program 8 times [2021-06-06 05:12:32,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:32,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335428940] [2021-06-06 05:12:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-06-06 05:12:32,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:12:32,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335428940] [2021-06-06 05:12:32,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335428940] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:32,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552416972] [2021-06-06 05:12:32,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:12:32,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 05:12:32,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 05:12:32,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 05:12:32,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 05:12:33,800 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2021-06-06 05:12:33,995 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2021-06-06 05:12:34,484 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2021-06-06 05:12:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 05:12:34,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552416972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:34,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 05:12:34,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 36 [2021-06-06 05:12:34,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408143] [2021-06-06 05:12:34,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-06 05:12:34,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:12:34,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-06 05:12:34,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 05:12:34,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:34,906 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:12:34,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:12:34,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:34,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:34,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:34,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:34,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:34,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:34,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:12:34,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:12:34,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:12:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:12:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:12:35,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-06-06 05:12:35,613 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:35,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:35,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1926253295, now seen corresponding path program 9 times [2021-06-06 05:12:35,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:35,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018677407] [2021-06-06 05:12:35,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-06 05:12:36,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:12:36,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018677407] [2021-06-06 05:12:36,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018677407] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:36,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430519287] [2021-06-06 05:12:36,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:12:36,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-06 05:12:36,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 05:12:36,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-06 05:12:36,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 05:12:38,179 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 05:12:38,545 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2021-06-06 05:12:38,824 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-06-06 05:12:39,113 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-06 05:12:39,556 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 99 [2021-06-06 05:12:39,931 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2021-06-06 05:12:40,131 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-06 05:12:40,533 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2021-06-06 05:12:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 05:12:40,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430519287] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:40,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 05:12:40,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 43 [2021-06-06 05:12:40,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844864560] [2021-06-06 05:12:40,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-06-06 05:12:40,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:12:40,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-06-06 05:12:40,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1588, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 05:12:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:40,674 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:12:40,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:12:40,674 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:40,674 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:40,674 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:40,674 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:40,674 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:40,674 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:40,674 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:12:40,674 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:12:40,674 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:12:40,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:41,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:12:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:12:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:12:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:12:41,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-06-06 05:12:41,849 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:41,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:41,849 INFO L82 PathProgramCache]: Analyzing trace with hash -649515051, now seen corresponding path program 10 times [2021-06-06 05:12:41,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:41,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160265679] [2021-06-06 05:12:41,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:43,082 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-06-06 05:12:43,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:12:43,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160265679] [2021-06-06 05:12:43,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160265679] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:43,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742433532] [2021-06-06 05:12:43,083 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:12:43,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 05:12:43,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 05:12:43,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-06 05:12:43,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 05:12:44,235 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-06 05:12:44,703 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2021-06-06 05:12:45,234 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 129 [2021-06-06 05:12:46,031 WARN L205 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 120 [2021-06-06 05:12:46,354 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 05:12:47,018 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 136 [2021-06-06 05:12:47,735 WARN L205 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 122 [2021-06-06 05:12:48,243 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 125 [2021-06-06 05:12:48,497 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-06 05:12:48,819 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-06 05:12:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 05:12:48,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742433532] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:48,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 05:12:48,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 27] total 41 [2021-06-06 05:12:48,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627839050] [2021-06-06 05:12:48,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-06-06 05:12:48,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:12:48,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-06-06 05:12:48,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1464, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 05:12:48,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:48,966 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:12:48,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.238095238095238) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:12:48,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:48,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:48,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:48,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:48,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:48,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:48,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:12:48,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:12:48,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:12:48,967 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:12:48,967 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:12:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:12:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:12:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:12:49,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 05:12:49,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:12:49,805 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:49,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:49,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1891278345, now seen corresponding path program 11 times [2021-06-06 05:12:49,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:49,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219900869] [2021-06-06 05:12:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:12:51,392 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 29 [2021-06-06 05:12:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 1 proven. 224 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-06-06 05:12:51,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:12:51,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219900869] [2021-06-06 05:12:51,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219900869] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:51,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687055463] [2021-06-06 05:12:51,862 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 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 [2021-06-06 05:12:51,922 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-06 05:12:51,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 05:12:51,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-06 05:12:51,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 05:12:53,057 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2021-06-06 05:12:53,397 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-06 05:12:53,633 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-06 05:12:53,926 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-06 05:12:54,309 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-06 05:12:54,828 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 112 [2021-06-06 05:12:55,096 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-06 05:12:55,432 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-06 05:12:56,100 WARN L205 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 141 [2021-06-06 05:12:56,530 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2021-06-06 05:12:56,907 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2021-06-06 05:12:57,633 WARN L205 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 128 [2021-06-06 05:12:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 05:12:57,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687055463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:12:57,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 05:12:57,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 30] total 50 [2021-06-06 05:12:57,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981358092] [2021-06-06 05:12:57,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-06-06 05:12:57,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:12:57,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-06-06 05:12:57,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=2280, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 05:12:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:57,874 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:12:57,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 50 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:12:57,874 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:57,874 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:57,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:57,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:57,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:57,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:57,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:12:57,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:12:57,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:12:57,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:12:57,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-06 05:12:57,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:12:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:12:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:12:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:12:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:12:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:12:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:12:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:12:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:12:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 05:12:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 05:12:59,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-06-06 05:12:59,133 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:12:59,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:12:59,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1964665872, now seen corresponding path program 12 times [2021-06-06 05:12:59,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:12:59,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387835627] [2021-06-06 05:12:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:12:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:13:00,160 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2021-06-06 05:13:00,303 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2021-06-06 05:13:00,449 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2021-06-06 05:13:01,170 WARN L205 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-06-06 05:13:02,600 WARN L205 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 156 DAG size of output: 151 [2021-06-06 05:13:02,968 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 28 [2021-06-06 05:13:06,581 WARN L205 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 124 DAG size of output: 110 [2021-06-06 05:13:09,551 WARN L205 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2021-06-06 05:13:09,735 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 16 [2021-06-06 05:13:15,078 WARN L205 SmtUtils]: Spent 5.34 s on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2021-06-06 05:13:21,421 WARN L205 SmtUtils]: Spent 6.24 s on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2021-06-06 05:13:29,436 WARN L205 SmtUtils]: Spent 7.90 s on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-06-06 05:13:32,273 WARN L205 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 112 DAG size of output: 68 [2021-06-06 05:13:33,873 WARN L205 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 93 DAG size of output: 56 [2021-06-06 05:13:34,218 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 26 [2021-06-06 05:13:34,515 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 26 [2021-06-06 05:13:34,920 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 27 [2021-06-06 05:13:35,329 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 27 [2021-06-06 05:13:35,711 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 25 [2021-06-06 05:13:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 2 proven. 227 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-06 05:13:35,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:13:35,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387835627] [2021-06-06 05:13:35,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387835627] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:13:35,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427389478] [2021-06-06 05:13:35,844 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 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 [2021-06-06 05:13:35,922 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-06 05:13:35,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 05:13:35,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 43 conjunts are in the unsatisfiable core [2021-06-06 05:13:35,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 05:13:37,088 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-06-06 05:13:37,537 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-06 05:13:37,785 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-06 05:13:38,073 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-06 05:13:38,806 WARN L205 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 145 [2021-06-06 05:13:39,218 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-06-06 05:13:39,990 WARN L205 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 157 [2021-06-06 05:13:40,740 WARN L205 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 154 [2021-06-06 05:13:41,562 WARN L205 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 154 [2021-06-06 05:13:42,568 WARN L205 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2021-06-06 05:13:43,162 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2021-06-06 05:13:43,698 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2021-06-06 05:13:44,245 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2021-06-06 05:13:45,458 WARN L205 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2021-06-06 05:13:46,594 WARN L205 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 171 [2021-06-06 05:13:47,149 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2021-06-06 05:13:47,922 WARN L205 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 130 [2021-06-06 05:13:48,447 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-06 05:13:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 05:13:48,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427389478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:13:48,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 05:13:48,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 36] total 57 [2021-06-06 05:13:48,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213675416] [2021-06-06 05:13:48,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-06-06 05:13:48,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:13:48,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-06-06 05:13:48,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=2990, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 05:13:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:13:48,607 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:13:48,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 57 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:13:48,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:13:48,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:13:48,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:13:48,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:13:48,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:13:48,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:13:48,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:13:48,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:13:48,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:13:48,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:13:48,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-06 05:13:48,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 05:13:48,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:13:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:13:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:13:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:13:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:13:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:13:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:13:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:13:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:13:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:13:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:13:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 05:13:50,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 05:13:50,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 05:13:51,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:13:51,097 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:13:51,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:13:51,097 INFO L82 PathProgramCache]: Analyzing trace with hash -785302868, now seen corresponding path program 13 times [2021-06-06 05:13:51,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:13:51,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36866473] [2021-06-06 05:13:51,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:13:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:13:53,223 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2021-06-06 05:13:53,622 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 103 [2021-06-06 05:13:53,782 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 17 [2021-06-06 05:13:54,157 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 122 [2021-06-06 05:13:54,505 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 102 [2021-06-06 05:13:54,696 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 25 [2021-06-06 05:13:54,962 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 100 [2021-06-06 05:13:55,156 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 27 [2021-06-06 05:13:55,349 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2021-06-06 05:13:55,561 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 28 [2021-06-06 05:13:55,973 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 16 [2021-06-06 05:13:56,168 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 18 [2021-06-06 05:13:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 05:13:56,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:13:56,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36866473] [2021-06-06 05:13:56,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36866473] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:13:56,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214891159] [2021-06-06 05:13:56,920 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 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 [2021-06-06 05:13:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:13:56,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-06 05:13:56,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 05:13:58,660 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2021-06-06 05:13:59,328 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 139 [2021-06-06 05:14:00,114 WARN L205 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 164 [2021-06-06 05:14:01,205 WARN L205 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 146 [2021-06-06 05:14:02,479 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 210 DAG size of output: 183 [2021-06-06 05:14:03,332 WARN L205 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 168 [2021-06-06 05:14:04,732 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 194 DAG size of output: 179 [2021-06-06 05:14:05,945 WARN L205 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 179 [2021-06-06 05:14:07,158 WARN L205 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 180 [2021-06-06 05:14:08,293 WARN L205 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 183 [2021-06-06 05:14:09,662 WARN L205 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 208 [2021-06-06 05:14:10,385 WARN L205 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-06-06 05:14:11,063 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-06-06 05:14:11,870 WARN L205 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-06-06 05:14:12,746 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2021-06-06 05:14:13,489 WARN L205 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-06-06 05:14:14,193 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-06-06 05:14:14,898 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-06-06 05:14:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 05:14:15,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214891159] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:14:15,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 05:14:15,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37] total 69 [2021-06-06 05:14:15,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954761834] [2021-06-06 05:14:15,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-06-06 05:14:15,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:14:15,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-06-06 05:14:15,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=4414, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 05:14:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:14:15,234 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:14:15,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.057142857142857) internal successors, (144), 69 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:14:15,234 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:14:15,234 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:14:15,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:14:15,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:14:15,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:14:15,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:14:15,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:14:15,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:14:15,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:14:15,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:14:15,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-06 05:14:15,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 05:14:15,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2021-06-06 05:14:15,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 05:14:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 05:14:18,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 05:14:18,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2021-06-06 05:14:18,253 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:14:18,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:14:18,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1099942948, now seen corresponding path program 14 times [2021-06-06 05:14:18,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:14:18,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610485862] [2021-06-06 05:14:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:14:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:14:19,302 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2021-06-06 05:14:22,506 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 1 proven. 523 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 05:14:22,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:14:22,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610485862] [2021-06-06 05:14:22,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610485862] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:14:22,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435768116] [2021-06-06 05:14:22,507 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:14:22,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 05:14:22,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 05:14:22,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-06 05:14:22,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 05:14:24,880 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 99 [2021-06-06 05:14:25,437 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-06-06 05:14:25,807 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-06 05:14:26,236 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-06-06 05:14:27,320 WARN L205 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 197 [2021-06-06 05:14:27,980 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2021-06-06 05:14:29,081 WARN L205 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 194 [2021-06-06 05:14:30,082 WARN L205 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 181 [2021-06-06 05:14:31,136 WARN L205 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 176 [2021-06-06 05:14:31,814 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-06-06 05:14:33,469 WARN L205 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 220 [2021-06-06 05:14:34,363 WARN L205 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2021-06-06 05:14:35,278 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2021-06-06 05:14:36,057 WARN L205 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2021-06-06 05:14:36,869 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2021-06-06 05:14:37,771 WARN L205 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2021-06-06 05:14:38,668 WARN L205 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2021-06-06 05:14:39,429 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2021-06-06 05:14:41,114 WARN L205 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 204 DAG size of output: 203 [2021-06-06 05:14:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 05:14:41,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435768116] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:14:41,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 05:14:41,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 41] total 76 [2021-06-06 05:14:41,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85351758] [2021-06-06 05:14:41,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-06-06 05:14:41,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:14:41,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-06-06 05:14:41,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=618, Invalid=5234, Unknown=0, NotChecked=0, Total=5852 [2021-06-06 05:14:41,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:14:41,635 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:14:41,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.0779220779220777) internal successors, (160), 76 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:14:41,635 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:14:41,635 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:14:41,635 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:14:41,635 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:14:41,635 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:14:41,635 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:14:41,635 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:14:41,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:14:41,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:14:41,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:14:41,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-06 05:14:41,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 05:14:41,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2021-06-06 05:14:41,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-06 05:14:41,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 05:14:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 05:14:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 05:14:46,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:14:46,851 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:14:46,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:14:46,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1369613190, now seen corresponding path program 15 times [2021-06-06 05:14:46,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:14:46,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840389230] [2021-06-06 05:14:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:14:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 05:14:48,280 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 27 [2021-06-06 05:14:48,567 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 52 [2021-06-06 05:14:48,807 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 52 [2021-06-06 05:14:49,211 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 54 [2021-06-06 05:14:49,567 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 46 [2021-06-06 05:14:49,837 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 57 [2021-06-06 05:14:50,887 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 166 DAG size of output: 50 [2021-06-06 05:14:51,738 WARN L205 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 55 [2021-06-06 05:14:52,685 WARN L205 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 47 [2021-06-06 05:14:54,044 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 220 DAG size of output: 52 [2021-06-06 05:14:55,194 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 206 DAG size of output: 47 [2021-06-06 05:15:05,438 WARN L205 SmtUtils]: Spent 10.23 s on a formula simplification. DAG size of input: 237 DAG size of output: 43 [2021-06-06 05:15:21,602 WARN L205 SmtUtils]: Spent 16.15 s on a formula simplification. DAG size of input: 244 DAG size of output: 34 [2021-06-06 05:15:41,378 WARN L205 SmtUtils]: Spent 19.76 s on a formula simplification. DAG size of input: 242 DAG size of output: 34 [2021-06-06 05:16:01,598 WARN L205 SmtUtils]: Spent 20.18 s on a formula simplification. DAG size of input: 238 DAG size of output: 41 [2021-06-06 05:16:55,440 WARN L205 SmtUtils]: Spent 53.79 s on a formula simplification. DAG size of input: 254 DAG size of output: 54 [2021-06-06 05:18:03,708 WARN L205 SmtUtils]: Spent 1.14 m on a formula simplification. DAG size of input: 327 DAG size of output: 84 [2021-06-06 05:18:03,878 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 29 [2021-06-06 05:18:18,775 WARN L205 SmtUtils]: Spent 14.89 s on a formula simplification. DAG size of input: 346 DAG size of output: 95 [2021-06-06 05:18:34,683 WARN L205 SmtUtils]: Spent 15.87 s on a formula simplification. DAG size of input: 291 DAG size of output: 97 [2021-06-06 05:18:54,611 WARN L205 SmtUtils]: Spent 19.90 s on a formula simplification. DAG size of input: 324 DAG size of output: 120 [2021-06-06 05:19:25,713 WARN L205 SmtUtils]: Spent 31.06 s on a formula simplification. DAG size of input: 323 DAG size of output: 116 [2021-06-06 05:19:25,896 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 28 [2021-06-06 05:19:53,990 WARN L205 SmtUtils]: Spent 28.09 s on a formula simplification. DAG size of input: 325 DAG size of output: 138 [2021-06-06 05:19:54,258 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 34 [2021-06-06 05:20:10,412 WARN L205 SmtUtils]: Spent 16.15 s on a formula simplification. DAG size of input: 279 DAG size of output: 104 [2021-06-06 05:20:10,584 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 28 [2021-06-06 05:20:24,794 WARN L205 SmtUtils]: Spent 14.21 s on a formula simplification. DAG size of input: 283 DAG size of output: 104 [2021-06-06 05:20:24,957 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 18 [2021-06-06 05:20:27,644 WARN L205 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 182 DAG size of output: 88 [2021-06-06 05:20:30,936 WARN L205 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 158 DAG size of output: 80 [2021-06-06 05:20:31,323 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 71 [2021-06-06 05:20:31,827 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 73 [2021-06-06 05:20:32,302 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2021-06-06 05:20:32,908 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 83 [2021-06-06 05:20:33,061 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 35 [2021-06-06 05:20:33,434 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 66 [2021-06-06 05:20:33,574 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 29 [2021-06-06 05:20:33,851 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 53 [2021-06-06 05:20:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 3 proven. 448 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-06-06 05:20:34,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 05:20:34,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840389230] [2021-06-06 05:20:34,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840389230] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:20:34,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212206274] [2021-06-06 05:20:34,162 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 05:20:34,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2021-06-06 05:20:34,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 05:20:34,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 53 conjunts are in the unsatisfiable core [2021-06-06 05:20:34,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 05:20:36,424 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2021-06-06 05:20:36,948 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-06-06 05:20:37,529 WARN L205 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 147 [2021-06-06 05:20:37,957 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-06-06 05:20:39,054 WARN L205 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2021-06-06 05:20:39,720 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-06-06 05:20:40,873 WARN L205 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 212 [2021-06-06 05:20:41,922 WARN L205 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 201 [2021-06-06 05:20:43,374 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 234 DAG size of output: 194 [2021-06-06 05:20:44,049 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-06-06 05:20:45,576 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 286 DAG size of output: 242 [2021-06-06 05:20:46,467 WARN L205 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2021-06-06 05:20:47,631 WARN L205 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2021-06-06 05:20:48,653 WARN L205 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2021-06-06 05:20:49,619 WARN L205 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2021-06-06 05:20:50,615 WARN L205 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2021-06-06 05:20:50,831 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 354 [2021-06-06 05:20:50,958 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 354 [2021-06-06 05:20:53,122 WARN L205 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 354 DAG size of output: 270 [2021-06-06 05:20:54,186 WARN L205 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2021-06-06 05:20:55,439 WARN L205 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2021-06-06 05:20:56,348 WARN L205 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2021-06-06 05:20:58,494 WARN L205 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 251 DAG size of output: 250 [2021-06-06 05:20:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 05:20:59,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212206274] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 05:20:59,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 05:20:59,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 44] total 66 [2021-06-06 05:20:59,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637506514] [2021-06-06 05:20:59,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-06-06 05:20:59,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 05:20:59,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-06-06 05:20:59,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=3926, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 05:20:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:20:59,251 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 05:20:59,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2021-06-06 05:20:59,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 05:21:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:21:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 05:21:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:21:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 05:21:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 05:21:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 05:21:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 05:21:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 05:21:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 05:21:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 05:21:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 05:21:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 05:21:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 05:21:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 05:21:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 05:21:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-06 05:21:02,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable401 [2021-06-06 05:21:02,621 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 05:21:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 05:21:02,621 INFO L82 PathProgramCache]: Analyzing trace with hash -414648570, now seen corresponding path program 16 times [2021-06-06 05:21:02,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 05:21:02,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77282141] [2021-06-06 05:21:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 05:21:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown