/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-Random7777.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-07 02:55:24,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-07 02:55:24,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-07 02:55:24,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-07 02:55:24,725 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-Random7777.epf [2021-06-07 02:55:24,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-07 02:55:24,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-07 02:55:24,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-07 02:55:24,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-07 02:55:24,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-07 02:55:24,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-07 02:55:24,752 INFO L138 SettingsManager]: * Use SBE=true [2021-06-07 02:55:24,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-07 02:55:24,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-07 02:55:24,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-07 02:55:24,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-07 02:55:24,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-07 02:55:24,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-07 02:55:24,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-07 02:55:24,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-07 02:55:24,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-07 02:55:24,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-07 02:55:24,753 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-07 02:55:24,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-07 02:55:24,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-07 02:55:24,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-07 02:55:24,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-07 02:55:24,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-07 02:55:24,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-07 02:55:24,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-07 02:55:24,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-07 02:55:24,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-07 02:55:24,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-07 02:55:24,754 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-07 02:55:24,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-07 02:55:24,754 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-07 02:55:24,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-07 02:55:24,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-07 02:55:24,755 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-07 02:55:24,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-07 02:55:24,755 INFO L138 SettingsManager]: * Random seed used by POR DFS order=7777 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-07 02:55:24,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-07 02:55:24,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-07 02:55:24,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-07 02:55:24,977 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-07 02:55:24,978 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-07 02:55:24,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-subst.wvr.bpl [2021-06-07 02:55:24,978 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-subst.wvr.bpl' [2021-06-07 02:55:25,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-07 02:55:25,063 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-07 02:55:25,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-07 02:55:25,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-07 02:55:25,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-07 02:55:25,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:55:25" (1/1) ... [2021-06-07 02:55:25,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:55:25" (1/1) ... [2021-06-07 02:55:25,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-07 02:55:25,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-07 02:55:25,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-07 02:55:25,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-07 02:55:25,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:55:25" (1/1) ... [2021-06-07 02:55:25,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:55:25" (1/1) ... [2021-06-07 02:55:25,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:55:25" (1/1) ... [2021-06-07 02:55:25,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:55:25" (1/1) ... [2021-06-07 02:55:25,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:55:25" (1/1) ... [2021-06-07 02:55:25,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:55:25" (1/1) ... [2021-06-07 02:55:25,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:55:25" (1/1) ... [2021-06-07 02:55:25,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-07 02:55:25,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-07 02:55:25,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-07 02:55:25,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-07 02:55:25,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:55:25" (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 [2021-06-07 02:55:25,166 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-07 02:55:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-07 02:55:25,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-07 02:55:25,167 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-07 02:55:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-07 02:55:25,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-07 02:55:25,167 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-07 02:55:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-07 02:55:25,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-07 02:55:25,167 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-07 02:55:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-07 02:55:25,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-07 02:55:25,168 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-07 02:55:25,576 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-07 02:55:25,576 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-06-07 02:55:25,577 INFO L202 PluginConnector]: Adding new model nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 02:55:25 BoogieIcfgContainer [2021-06-07 02:55:25,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-07 02:55:25,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-07 02:55:25,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-07 02:55:25,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-07 02:55:25,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 02:55:25" (1/2) ... [2021-06-07 02:55:25,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77672ce5 and model type nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.06 02:55:25, skipping insertion in model container [2021-06-07 02:55:25,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 02:55:25" (2/2) ... [2021-06-07 02:55:25,586 INFO L111 eAbstractionObserver]: Analyzing ICFG nzb-file-subst.wvr.bpl [2021-06-07 02:55:25,592 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-07 02:55:25,593 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-07 02:55:25,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-07 02:55:25,593 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-07 02:55:25,636 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-07 02:55:25,652 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 [2021-06-07 02:55:25,698 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-07 02:55:25,699 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-07 02:55:25,699 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-07 02:55:25,699 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-07 02:55:25,699 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-07 02:55:25,699 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-07 02:55:25,699 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-07 02:55:25,699 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-07 02:55:25,729 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:25,733 INFO L82 PathProgramCache]: Analyzing trace with hash -671959330, now seen corresponding path program 1 times [2021-06-07 02:55:25,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:25,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821093179] [2021-06-07 02:55:25,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:25,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:25,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821093179] [2021-06-07 02:55:25,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821093179] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 02:55:25,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 02:55:25,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-07 02:55:25,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757382008] [2021-06-07 02:55:25,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-07 02:55:25,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:25,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-07 02:55:25,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-07 02:55:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:25,869 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:25,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:25,870 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:25,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-07 02:55:25,886 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:25,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:25,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1447535560, now seen corresponding path program 1 times [2021-06-07 02:55:25,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:25,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932260547] [2021-06-07 02:55:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:26,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:26,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932260547] [2021-06-07 02:55:26,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932260547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:26,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761437303] [2021-06-07 02:55:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:26,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-07 02:55:26,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:26,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761437303] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:26,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:26,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-06-07 02:55:26,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423183907] [2021-06-07 02:55:26,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-07 02:55:26,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-07 02:55:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-07 02:55:26,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:26,260 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:26,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:26,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:26,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:26,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:26,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:26,611 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:26,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:26,612 INFO L82 PathProgramCache]: Analyzing trace with hash 736162524, now seen corresponding path program 1 times [2021-06-07 02:55:26,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:26,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527993248] [2021-06-07 02:55:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:26,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:26,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527993248] [2021-06-07 02:55:26,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527993248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 02:55:26,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 02:55:26,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-07 02:55:26,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226057148] [2021-06-07 02:55:26,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-07 02:55:26,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:26,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-07 02:55:26,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-07 02:55:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:26,633 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:26,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:26,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:26,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:26,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:26,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-07 02:55:26,681 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:26,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:26,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1626290656, now seen corresponding path program 1 times [2021-06-07 02:55:26,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:26,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146518837] [2021-06-07 02:55:26,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:26,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:26,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146518837] [2021-06-07 02:55:26,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146518837] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 02:55:26,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 02:55:26,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-07 02:55:26,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279790385] [2021-06-07 02:55:26,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-07 02:55:26,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:26,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-07 02:55:26,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-07 02:55:26,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:26,808 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:26,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:26,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:26,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:26,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:26,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:27,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-07 02:55:27,062 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:27,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:27,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1319052778, now seen corresponding path program 1 times [2021-06-07 02:55:27,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:27,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29005647] [2021-06-07 02:55:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 02:55:27,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:27,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29005647] [2021-06-07 02:55:27,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29005647] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 02:55:27,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 02:55:27,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-07 02:55:27,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40144067] [2021-06-07 02:55:27,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-07 02:55:27,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:27,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-07 02:55:27,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-07 02:55:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:27,099 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:27,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:27,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:27,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:27,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-07 02:55:27,199 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:27,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:27,200 INFO L82 PathProgramCache]: Analyzing trace with hash -705752826, now seen corresponding path program 1 times [2021-06-07 02:55:27,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:27,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397069891] [2021-06-07 02:55:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:27,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:27,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397069891] [2021-06-07 02:55:27,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397069891] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:27,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069990196] [2021-06-07 02:55:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:27,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-06-07 02:55:27,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:27,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069990196] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:27,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:27,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-06-07 02:55:27,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867605128] [2021-06-07 02:55:27,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-07 02:55:27,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:27,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-07 02:55:27,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-07 02:55:27,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:27,303 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:27,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:27,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:27,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:27,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:27,579 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:27,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1305554964, now seen corresponding path program 1 times [2021-06-07 02:55:27,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:27,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830241249] [2021-06-07 02:55:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:27,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:27,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830241249] [2021-06-07 02:55:27,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830241249] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 02:55:27,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 02:55:27,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-07 02:55:27,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898342742] [2021-06-07 02:55:27,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-07 02:55:27,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:27,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-07 02:55:27,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-07 02:55:27,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:27,607 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:27,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:27,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:27,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:27,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:27,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-07 02:55:27,648 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:27,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:27,650 INFO L82 PathProgramCache]: Analyzing trace with hash 624313672, now seen corresponding path program 1 times [2021-06-07 02:55:27,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:27,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128277146] [2021-06-07 02:55:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:27,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:27,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128277146] [2021-06-07 02:55:27,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128277146] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:27,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970710458] [2021-06-07 02:55:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:27,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-06-07 02:55:27,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 02:55:27,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970710458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 02:55:27,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-07 02:55:27,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2021-06-07 02:55:27,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969828582] [2021-06-07 02:55:27,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-07 02:55:27,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:27,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-07 02:55:27,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-07 02:55:27,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:27,807 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:27,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:27,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:27,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:27,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:27,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:28,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:28,041 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:28,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:28,041 INFO L82 PathProgramCache]: Analyzing trace with hash 463042056, now seen corresponding path program 1 times [2021-06-07 02:55:28,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:28,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067139083] [2021-06-07 02:55:28,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:28,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:28,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067139083] [2021-06-07 02:55:28,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067139083] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:28,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166968406] [2021-06-07 02:55:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order 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 [2021-06-07 02:55:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:28,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-07 02:55:28,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:29,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:29,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166968406] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:29,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:29,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-07 02:55:29,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15702329] [2021-06-07 02:55:29,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-07 02:55:29,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:29,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-07 02:55:29,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-07 02:55:29,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:29,194 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:29,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:29,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:29,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:29,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:29,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:29,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:29,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:29,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:29,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:29,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:29,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:29,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:29,645 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:29,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1238307602, now seen corresponding path program 2 times [2021-06-07 02:55:29,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:29,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803499628] [2021-06-07 02:55:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:29,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:29,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803499628] [2021-06-07 02:55:29,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803499628] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:29,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156022712] [2021-06-07 02:55:29,764 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 [2021-06-07 02:55:29,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-07 02:55:29,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:55:29,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-07 02:55:29,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 02:55:29,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156022712] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:29,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:29,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2021-06-07 02:55:29,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395872661] [2021-06-07 02:55:29,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-07 02:55:29,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:29,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-07 02:55:29,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-06-07 02:55:29,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:29,910 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:29,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:29,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:29,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:29,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:29,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:29,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:29,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:29,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:29,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:29,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:29,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:30,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:30,425 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:30,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:30,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2142236122, now seen corresponding path program 3 times [2021-06-07 02:55:30,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:30,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257342671] [2021-06-07 02:55:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:30,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:30,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257342671] [2021-06-07 02:55:30,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257342671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:30,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299268845] [2021-06-07 02:55:30,540 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 [2021-06-07 02:55:30,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-07 02:55:30,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:55:30,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-07 02:55:30,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:30,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:55:30,636 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:30,659 INFO L628 ElimStorePlain]: treesize reduction 2, result has 92.9 percent of original size [2021-06-07 02:55:30,660 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-07 02:55:30,660 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:26 [2021-06-07 02:55:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:30,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299268845] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:30,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:30,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-07 02:55:30,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137267086] [2021-06-07 02:55:30,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-07 02:55:30,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:30,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-07 02:55:30,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-06-07 02:55:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:30,708 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:30,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:30,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:30,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:30,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:30,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:30,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:30,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:30,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:30,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:30,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:30,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:30,709 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:31,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-06-07 02:55:31,033 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:31,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:31,033 INFO L82 PathProgramCache]: Analyzing trace with hash 273997750, now seen corresponding path program 4 times [2021-06-07 02:55:31,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:31,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561450840] [2021-06-07 02:55:31,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:31,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:31,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561450840] [2021-06-07 02:55:31,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561450840] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:31,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510702838] [2021-06-07 02:55:31,362 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 [2021-06-07 02:55:31,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-07 02:55:31,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:55:31,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-07 02:55:31,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:32,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:32,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:32,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-06-07 02:55:32,198 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:32,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:32,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:32,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-06-07 02:55:32,205 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:32,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:32,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:32,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-06-07 02:55:32,214 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:32,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:32,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:32,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-06-07 02:55:32,222 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:32,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:32,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-06-07 02:55:32,229 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:32,569 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2021-06-07 02:55:32,569 INFO L628 ElimStorePlain]: treesize reduction 439, result has 39.7 percent of original size [2021-06-07 02:55:32,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:55:32,575 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:32,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:55:32,579 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:32,716 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-07 02:55:32,716 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:32,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:55:32,722 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:32,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:55:32,728 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:32,870 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-07 02:55:32,871 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:32,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:55:32,876 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:32,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:55:32,885 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:33,009 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-07 02:55:33,009 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:33,014 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-06-07 02:55:33,014 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 6 variables, input treesize:829, output treesize:265 [2021-06-07 02:55:33,174 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-07 02:55:33,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:33,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:33,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-06-07 02:55:33,936 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:33,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:33,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-06-07 02:55:33,940 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:34,016 INFO L628 ElimStorePlain]: treesize reduction 67, result has 57.9 percent of original size [2021-06-07 02:55:34,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:55:34,022 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:34,054 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:34,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:55:34,057 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:34,090 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:34,091 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-07 02:55:34,091 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:196, output treesize:84 [2021-06-07 02:55:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:34,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510702838] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:34,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:34,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-06-07 02:55:34,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538027039] [2021-06-07 02:55:34,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-07 02:55:34,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:34,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-07 02:55:34,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2021-06-07 02:55:34,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:34,257 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:34,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:34,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:34,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:34,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:34,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:34,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:34,258 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:34,258 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:34,258 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:34,258 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:34,258 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:34,258 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:34,258 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:34,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-06-07 02:55:34,697 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:34,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:34,697 INFO L82 PathProgramCache]: Analyzing trace with hash 318753526, now seen corresponding path program 5 times [2021-06-07 02:55:34,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:34,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184869137] [2021-06-07 02:55:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-07 02:55:34,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:34,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184869137] [2021-06-07 02:55:34,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184869137] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:34,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139499587] [2021-06-07 02:55:34,795 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 [2021-06-07 02:55:34,847 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-07 02:55:34,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:55:34,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-07 02:55:34,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:34,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:55:34,883 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:34,888 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:34,889 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-06-07 02:55:34,889 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:13 [2021-06-07 02:55:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-07 02:55:34,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139499587] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:34,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:34,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-07 02:55:34,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153446969] [2021-06-07 02:55:34,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-07 02:55:34,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:34,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-07 02:55:34,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-06-07 02:55:34,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:34,960 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:34,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:34,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:34,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:34,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:34,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:34,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:34,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:34,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:34,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:34,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:34,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:34,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:34,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:34,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:35,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:35,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:35,353 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:35,353 INFO L82 PathProgramCache]: Analyzing trace with hash -926297502, now seen corresponding path program 6 times [2021-06-07 02:55:35,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:35,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497040008] [2021-06-07 02:55:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:35,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:35,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497040008] [2021-06-07 02:55:35,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497040008] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:35,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941993495] [2021-06-07 02:55:35,515 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 [2021-06-07 02:55:35,571 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-07 02:55:35,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:55:35,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-07 02:55:35,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:35,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:55:35,674 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:35,696 INFO L628 ElimStorePlain]: treesize reduction 22, result has 52.2 percent of original size [2021-06-07 02:55:35,696 INFO L518 ElimStorePlain]: Eliminatee v_prenex_9 vanished before elimination [2021-06-07 02:55:35,697 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-07 02:55:35,697 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:24 [2021-06-07 02:55:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:35,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941993495] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:35,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:35,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2021-06-07 02:55:35,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891735776] [2021-06-07 02:55:35,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-07 02:55:35,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:35,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-07 02:55:35,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-06-07 02:55:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:35,767 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:35,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:35,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:35,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:35,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:35,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:35,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:35,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:35,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:35,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:35,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:35,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:35,768 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:35,768 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:35,768 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:35,768 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:36,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2021-06-07 02:55:36,296 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:36,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:36,296 INFO L82 PathProgramCache]: Analyzing trace with hash -361264082, now seen corresponding path program 7 times [2021-06-07 02:55:36,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:36,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641746881] [2021-06-07 02:55:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-07 02:55:36,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:36,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641746881] [2021-06-07 02:55:36,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641746881] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:36,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322502145] [2021-06-07 02:55:36,405 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 [2021-06-07 02:55:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:36,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-07 02:55:36,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:36,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:55:36,499 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:36,504 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:36,505 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-06-07 02:55:36,505 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:13 [2021-06-07 02:55:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-07 02:55:36,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322502145] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:36,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:36,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-06-07 02:55:36,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303172421] [2021-06-07 02:55:36,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-07 02:55:36,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:36,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-07 02:55:36,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-06-07 02:55:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:36,618 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:36,618 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:36,618 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:36,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:37,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2021-06-07 02:55:37,101 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:37,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:37,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1440573594, now seen corresponding path program 8 times [2021-06-07 02:55:37,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:37,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12922029] [2021-06-07 02:55:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:37,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:37,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12922029] [2021-06-07 02:55:37,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12922029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:37,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090186259] [2021-06-07 02:55:37,263 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 [2021-06-07 02:55:37,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-07 02:55:37,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:55:37,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-07 02:55:37,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:37,448 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-07 02:55:37,449 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:37,469 INFO L628 ElimStorePlain]: treesize reduction 2, result has 93.8 percent of original size [2021-06-07 02:55:37,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:55:37,472 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:37,481 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:37,481 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-07 02:55:37,481 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:24 [2021-06-07 02:55:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:37,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090186259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:37,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:37,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2021-06-07 02:55:37,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674171692] [2021-06-07 02:55:37,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-07 02:55:37,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:37,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-07 02:55:37,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2021-06-07 02:55:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:37,572 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:37,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:37,572 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:37,572 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:37,572 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:37,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:38,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:38,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:38,293 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:38,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:38,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2704138, now seen corresponding path program 9 times [2021-06-07 02:55:38,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:38,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650851586] [2021-06-07 02:55:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:38,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:38,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650851586] [2021-06-07 02:55:38,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650851586] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:38,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88994081] [2021-06-07 02:55:38,777 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 [2021-06-07 02:55:38,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-07 02:55:38,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:55:38,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 57 conjunts are in the unsatisfiable core [2021-06-07 02:55:38,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:39,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:39,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:39,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-06-07 02:55:39,822 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:39,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:39,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:39,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-06-07 02:55:39,835 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:39,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:39,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:39,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-06-07 02:55:39,841 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:39,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:39,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-06-07 02:55:39,846 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:40,163 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-07 02:55:40,164 INFO L628 ElimStorePlain]: treesize reduction 271, result has 52.0 percent of original size [2021-06-07 02:55:40,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-06-07 02:55:40,169 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:40,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-06-07 02:55:40,174 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:40,302 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-07 02:55:40,302 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:40,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:55:40,307 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:40,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:55:40,321 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:40,446 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-07 02:55:40,446 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:40,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:55:40,452 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:40,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:55:40,456 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:40,589 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-07 02:55:40,589 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:40,593 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-06-07 02:55:40,593 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 6 variables, input treesize:657, output treesize:265 [2021-06-07 02:55:40,775 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-07 02:55:41,599 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-07 02:55:42,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:42,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:42,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-06-07 02:55:42,022 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:42,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:42,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-06-07 02:55:42,026 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:42,134 INFO L628 ElimStorePlain]: treesize reduction 70, result has 58.8 percent of original size [2021-06-07 02:55:42,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:55:42,139 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:42,178 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:42,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:55:42,182 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:42,220 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:42,221 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-07 02:55:42,221 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:208, output treesize:90 [2021-06-07 02:55:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:42,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88994081] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:42,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:42,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2021-06-07 02:55:42,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682359181] [2021-06-07 02:55:42,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-07 02:55:42,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:42,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-07 02:55:42,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2021-06-07 02:55:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:42,400 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:42,400 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:42,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:42,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:42,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:42,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:42,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:42,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:42,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:42,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:42,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:42,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:42,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:42,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:42,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:42,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:42,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:42,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:42,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-07 02:55:43,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2021-06-07 02:55:43,419 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:43,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:43,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1827944502, now seen corresponding path program 10 times [2021-06-07 02:55:43,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:43,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937117439] [2021-06-07 02:55:43,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-06-07 02:55:43,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:43,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937117439] [2021-06-07 02:55:43,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937117439] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 02:55:43,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 02:55:43,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-07 02:55:43,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654138328] [2021-06-07 02:55:43,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-07 02:55:43,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:43,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-07 02:55:43,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-06-07 02:55:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:43,498 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:43,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-07 02:55:43,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:44,498 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-06-07 02:55:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-07 02:55:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:44,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-06-07 02:55:44,879 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:44,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:44,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1320977280, now seen corresponding path program 11 times [2021-06-07 02:55:44,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:44,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277987597] [2021-06-07 02:55:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-06-07 02:55:45,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:45,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277987597] [2021-06-07 02:55:45,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277987597] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:45,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673127390] [2021-06-07 02:55:45,063 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:45,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-07 02:55:45,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:55:45,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-07 02:55:45,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-07 02:55:45,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673127390] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:45,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:45,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-06-07 02:55:45,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174210612] [2021-06-07 02:55:45,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-07 02:55:45,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:45,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-07 02:55:45,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-06-07 02:55:45,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:45,514 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:45,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:45,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:45,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:45,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:45,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-07 02:55:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-07 02:55:47,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:47,009 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:47,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:47,009 INFO L82 PathProgramCache]: Analyzing trace with hash -487866936, now seen corresponding path program 12 times [2021-06-07 02:55:47,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:47,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719395418] [2021-06-07 02:55:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:47,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:47,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719395418] [2021-06-07 02:55:47,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719395418] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:47,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696232195] [2021-06-07 02:55:47,200 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:47,266 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-07 02:55:47,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:55:47,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-07 02:55:47,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:47,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:55:47,396 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:47,423 INFO L628 ElimStorePlain]: treesize reduction 2, result has 92.3 percent of original size [2021-06-07 02:55:47,424 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-07 02:55:47,424 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:24 [2021-06-07 02:55:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:47,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696232195] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:47,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:47,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 28 [2021-06-07 02:55:47,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819457409] [2021-06-07 02:55:47,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-07 02:55:47,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:47,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-07 02:55:47,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2021-06-07 02:55:47,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:47,558 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:47,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:47,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:47,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:47,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:47,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:47,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-06-07 02:55:47,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:47,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2021-06-07 02:55:47,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-07 02:55:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-07 02:55:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-07 02:55:48,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable357 [2021-06-07 02:55:48,591 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:48,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:48,591 INFO L82 PathProgramCache]: Analyzing trace with hash 345181576, now seen corresponding path program 13 times [2021-06-07 02:55:48,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:48,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660083800] [2021-06-07 02:55:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:49,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:49,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660083800] [2021-06-07 02:55:49,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660083800] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:49,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251237949] [2021-06-07 02:55:49,437 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:49,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 57 conjunts are in the unsatisfiable core [2021-06-07 02:55:49,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:50,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:50,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:50,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-06-07 02:55:50,268 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:50,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:50,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:50,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-06-07 02:55:50,274 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:50,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:50,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:50,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-06-07 02:55:50,280 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:50,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:50,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-06-07 02:55:50,285 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:50,513 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2021-06-07 02:55:50,513 INFO L628 ElimStorePlain]: treesize reduction 211, result has 51.8 percent of original size [2021-06-07 02:55:50,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:55:50,519 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:50,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:55:50,534 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:50,642 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-06-07 02:55:50,652 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:50,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:55:50,658 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:50,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:55:50,662 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:50,758 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:50,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:55:50,765 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:50,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:55:50,769 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:50,861 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:50,864 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-06-07 02:55:50,865 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 6 variables, input treesize:529, output treesize:201 [2021-06-07 02:55:51,423 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2021-06-07 02:55:52,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:52,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:52,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-06-07 02:55:52,200 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:52,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:55:52,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-06-07 02:55:52,205 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:52,340 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2021-06-07 02:55:52,340 INFO L628 ElimStorePlain]: treesize reduction 110, result has 56.3 percent of original size [2021-06-07 02:55:52,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-06-07 02:55:52,344 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:52,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-06-07 02:55:52,348 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:52,425 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:52,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-06-07 02:55:52,429 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:52,540 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-06-07 02:55:52,541 INFO L628 ElimStorePlain]: treesize reduction 16, result has 87.4 percent of original size [2021-06-07 02:55:52,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:55:52,544 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-07 02:55:52,592 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:55:52,593 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-07 02:55:52,593 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:289, output treesize:107 [2021-06-07 02:55:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:55:52,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251237949] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:52,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:55:52,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 39 [2021-06-07 02:55:52,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562715666] [2021-06-07 02:55:52,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-07 02:55:52,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:52,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-07 02:55:52,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2021-06-07 02:55:52,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:52,803 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:52,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 39 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:55:52,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:52,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:52,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:52,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:52,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:52,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:52,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:52,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:52,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:52,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:52,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:52,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:52,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:52,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:52,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:52,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:52,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-06-07 02:55:52,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:52,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2021-06-07 02:55:52,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-06-07 02:55:52,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:53,810 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2021-06-07 02:55:54,197 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 79 [2021-06-07 02:55:54,784 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2021-06-07 02:55:55,072 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2021-06-07 02:55:55,334 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2021-06-07 02:55:55,617 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2021-06-07 02:55:55,873 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2021-06-07 02:55:56,254 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-07 02:55:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-07 02:55:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-07 02:55:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:55:56,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:56,457 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:56,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:56,458 INFO L82 PathProgramCache]: Analyzing trace with hash 399881672, now seen corresponding path program 14 times [2021-06-07 02:55:56,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:56,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995018368] [2021-06-07 02:55:56,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:56,501 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-06-07 02:55:56,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:56,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995018368] [2021-06-07 02:55:56,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995018368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:56,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80089352] [2021-06-07 02:55:56,501 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:56,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-07 02:55:56,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:55:56,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-07 02:55:56,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-06-07 02:55:56,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80089352] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 02:55:56,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-07 02:55:56,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 10 [2021-06-07 02:55:56,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960765941] [2021-06-07 02:55:56,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-07 02:55:56,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:56,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-07 02:55:56,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-07 02:55:56,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:56,619 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:56,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-06-07 02:55:56,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:56,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2021-06-07 02:55:56,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-06-07 02:55:56,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:55:56,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:56,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:56,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:56,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:56,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-07 02:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:55:56,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:56,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable446 [2021-06-07 02:55:56,953 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:55:56,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:55:56,953 INFO L82 PathProgramCache]: Analyzing trace with hash 160285824, now seen corresponding path program 15 times [2021-06-07 02:55:56,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:55:56,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665519817] [2021-06-07 02:55:56,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:55:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:55:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-06-07 02:55:56,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:55:56,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665519817] [2021-06-07 02:55:56,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665519817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:55:56,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072227504] [2021-06-07 02:55:56,989 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:55:57,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-07 02:55:57,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:55:57,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-07 02:55:57,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:55:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-06-07 02:55:57,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072227504] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 02:55:57,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-07 02:55:57,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2021-06-07 02:55:57,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436152219] [2021-06-07 02:55:57,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-07 02:55:57,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:55:57,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-07 02:55:57,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-07 02:55:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:57,098 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:55:57,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:55:57,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-06-07 02:55:57,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:57,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2021-06-07 02:55:57,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-06-07 02:55:57,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:55:57,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:55:57,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:55:57,537 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2021-06-07 02:55:57,821 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2021-06-07 02:55:58,365 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2021-06-07 02:55:58,773 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 87 [2021-06-07 02:55:59,154 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 70 [2021-06-07 02:55:59,488 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-06-07 02:55:59,682 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 77 [2021-06-07 02:55:59,931 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-06-07 02:56:00,161 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2021-06-07 02:56:00,480 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-06-07 02:56:00,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:00,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable447 [2021-06-07 02:56:00,996 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:56:00,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:56:00,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1749700562, now seen corresponding path program 16 times [2021-06-07 02:56:00,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:56:00,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693678549] [2021-06-07 02:56:00,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:56:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:56:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:56:01,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:56:01,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693678549] [2021-06-07 02:56:01,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693678549] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:56:01,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843424393] [2021-06-07 02:56:01,194 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:56:01,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-07 02:56:01,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:56:01,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-07 02:56:01,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:56:01,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:01,769 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:01,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:01,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-06-07 02:56:01,773 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:01,877 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-06-07 02:56:01,877 INFO L628 ElimStorePlain]: treesize reduction 103, result has 47.2 percent of original size [2021-06-07 02:56:01,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:56:01,882 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:01,922 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:01,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:01,926 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:01,959 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:01,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:56:01,964 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:01,995 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:01,998 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-06-07 02:56:01,998 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:207, output treesize:82 [2021-06-07 02:56:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:56:02,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843424393] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:56:02,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:56:02,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 32 [2021-06-07 02:56:02,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101729298] [2021-06-07 02:56:02,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-07 02:56:02,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:56:02,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-07 02:56:02,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2021-06-07 02:56:02,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:56:02,286 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:56:02,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2021-06-07 02:56:02,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-06-07 02:56:02,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:56:02,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:02,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:02,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:56:03,422 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2021-06-07 02:56:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:56:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-07 02:56:06,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable448 [2021-06-07 02:56:06,358 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:56:06,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:56:06,358 INFO L82 PathProgramCache]: Analyzing trace with hash 691482210, now seen corresponding path program 17 times [2021-06-07 02:56:06,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:56:06,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941032808] [2021-06-07 02:56:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:56:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:56:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:56:06,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:56:06,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941032808] [2021-06-07 02:56:06,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941032808] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:56:06,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753522631] [2021-06-07 02:56:06,642 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:56:06,695 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-07 02:56:06,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:56:06,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-07 02:56:06,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:56:07,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:56:07,351 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:07,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:07,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-06-07 02:56:07,355 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:07,520 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-06-07 02:56:07,520 INFO L628 ElimStorePlain]: treesize reduction 41, result has 80.5 percent of original size [2021-06-07 02:56:07,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:07,525 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:07,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:07,529 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:07,596 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:07,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:56:07,603 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:07,669 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:07,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:07,674 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:07,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:07,678 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:07,742 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:07,745 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2021-06-07 02:56:07,745 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 8 variables, input treesize:249, output treesize:150 [2021-06-07 02:56:08,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:08,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:08,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-06-07 02:56:08,168 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:08,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:08,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:08,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-06-07 02:56:08,171 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:08,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:08,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-06-07 02:56:08,174 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:08,181 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:08,181 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-07 02:56:08,181 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:77, output treesize:11 [2021-06-07 02:56:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:56:08,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753522631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:56:08,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:56:08,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2021-06-07 02:56:08,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950208538] [2021-06-07 02:56:08,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-07 02:56:08,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:56:08,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-07 02:56:08,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2021-06-07 02:56:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:56:08,220 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:56:08,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-06-07 02:56:08,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:56:08,221 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:08,221 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:08,221 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 55 states. [2021-06-07 02:56:08,221 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:56:09,755 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2021-06-07 02:56:10,284 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 86 [2021-06-07 02:56:10,450 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2021-06-07 02:56:10,641 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2021-06-07 02:56:10,819 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 83 [2021-06-07 02:56:11,343 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 87 [2021-06-07 02:56:11,524 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 79 [2021-06-07 02:56:11,704 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 83 [2021-06-07 02:56:11,873 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2021-06-07 02:56:12,420 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 86 [2021-06-07 02:56:12,586 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2021-06-07 02:56:12,765 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 82 [2021-06-07 02:56:13,030 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2021-06-07 02:56:13,300 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2021-06-07 02:56:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:56:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:56:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-07 02:56:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:56:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-07 02:56:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-07 02:56:16,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable469 [2021-06-07 02:56:16,709 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:56:16,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:56:16,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1754639928, now seen corresponding path program 18 times [2021-06-07 02:56:16,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:56:16,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106914588] [2021-06-07 02:56:16,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:56:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:56:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 02:56:16,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:56:16,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106914588] [2021-06-07 02:56:16,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106914588] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:56:16,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057689732] [2021-06-07 02:56:16,833 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:56:16,882 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-07 02:56:16,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:56:16,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-07 02:56:16,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:56:16,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-06-07 02:56:16,954 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:16,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-06-07 02:56:16,958 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:17,023 INFO L628 ElimStorePlain]: treesize reduction 32, result has 74.8 percent of original size [2021-06-07 02:56:17,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:56:17,027 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:17,058 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:17,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:56:17,062 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:17,106 INFO L628 ElimStorePlain]: treesize reduction 21, result has 74.7 percent of original size [2021-06-07 02:56:17,107 INFO L518 ElimStorePlain]: Eliminatee v_prenex_43 vanished before elimination [2021-06-07 02:56:17,107 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-07 02:56:17,107 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:137, output treesize:62 [2021-06-07 02:56:17,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:56:17,259 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:17,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:17,262 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:17,276 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:17,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:17,279 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:17,292 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:17,293 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-07 02:56:17,293 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:42, output treesize:16 [2021-06-07 02:56:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-07 02:56:17,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057689732] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:56:17,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:56:17,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 22 [2021-06-07 02:56:17,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091634368] [2021-06-07 02:56:17,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-07 02:56:17,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:56:17,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-07 02:56:17,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2021-06-07 02:56:17,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:56:17,340 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:56:17,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 22 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 67 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 59 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 68 states. [2021-06-07 02:56:17,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-07 02:56:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-07 02:56:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-07 02:56:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:56:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-07 02:56:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-07 02:56:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-07 02:56:18,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:56:18,416 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:56:18,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:56:18,417 INFO L82 PathProgramCache]: Analyzing trace with hash 922180040, now seen corresponding path program 19 times [2021-06-07 02:56:18,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:56:18,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255545545] [2021-06-07 02:56:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:56:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:56:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:56:18,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:56:18,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255545545] [2021-06-07 02:56:18,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255545545] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:56:18,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995670200] [2021-06-07 02:56:18,791 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:56:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:56:18,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 51 conjunts are in the unsatisfiable core [2021-06-07 02:56:18,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:56:19,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:19,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:19,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-06-07 02:56:19,540 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:19,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:19,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:19,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-06-07 02:56:19,546 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:19,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:19,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:19,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-06-07 02:56:19,552 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:19,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:19,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-06-07 02:56:19,558 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:19,852 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-06-07 02:56:19,852 INFO L628 ElimStorePlain]: treesize reduction 259, result has 52.9 percent of original size [2021-06-07 02:56:19,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:56:19,857 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:19,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:56:19,862 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:19,992 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-07 02:56:19,993 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:19,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:19,998 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:20,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:20,003 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:20,130 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-07 02:56:20,130 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:20,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:56:20,137 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:20,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-06-07 02:56:20,142 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:20,261 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-07 02:56:20,262 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:20,265 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-06-07 02:56:20,265 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 6 variables, input treesize:657, output treesize:265 [2021-06-07 02:56:20,424 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-07 02:56:21,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:21,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:21,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-06-07 02:56:21,258 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:21,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:21,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-06-07 02:56:21,263 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:21,352 INFO L628 ElimStorePlain]: treesize reduction 104, result has 48.5 percent of original size [2021-06-07 02:56:21,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:21,356 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:21,393 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:21,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:21,396 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:21,432 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:21,433 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-07 02:56:21,433 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:240, output treesize:90 [2021-06-07 02:56:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:56:21,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995670200] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:56:21,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:56:21,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-06-07 02:56:21,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523920955] [2021-06-07 02:56:21,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-07 02:56:21,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:56:21,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-07 02:56:21,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2021-06-07 02:56:21,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:56:21,564 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:56:21,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 29 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 67 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-07 02:56:21,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:56:21,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:21,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:21,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 59 states. [2021-06-07 02:56:21,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 68 states. [2021-06-07 02:56:21,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-07 02:56:21,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:56:22,093 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2021-06-07 02:56:22,482 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2021-06-07 02:56:22,957 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2021-06-07 02:56:23,241 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 84 [2021-06-07 02:56:23,584 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 69 [2021-06-07 02:56:23,844 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-06-07 02:56:24,058 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-06-07 02:56:24,237 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2021-06-07 02:56:24,440 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2021-06-07 02:56:24,612 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-06-07 02:56:24,780 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2021-06-07 02:56:24,924 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2021-06-07 02:56:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:56:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:56:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-07 02:56:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:56:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-07 02:56:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:56:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:56:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:56:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-07 02:56:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-06-07 02:56:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-07 02:56:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:56:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-07 02:56:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-07 02:56:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-07 02:56:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-07 02:56:25,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable507,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:56:25,931 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:56:25,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:56:25,931 INFO L82 PathProgramCache]: Analyzing trace with hash 731483152, now seen corresponding path program 20 times [2021-06-07 02:56:25,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:56:25,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969916039] [2021-06-07 02:56:25,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:56:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:56:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:56:26,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:56:26,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969916039] [2021-06-07 02:56:26,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969916039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:56:26,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676767546] [2021-06-07 02:56:26,071 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:56:26,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-07 02:56:26,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:56:26,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-07 02:56:26,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:56:26,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:56:26,502 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:26,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:26,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-06-07 02:56:26,506 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:26,564 INFO L628 ElimStorePlain]: treesize reduction 30, result has 67.4 percent of original size [2021-06-07 02:56:26,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:26,568 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:26,591 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:26,594 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2021-06-07 02:56:26,594 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:118, output treesize:50 [2021-06-07 02:56:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:56:26,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676767546] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:56:26,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 02:56:26,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 27 [2021-06-07 02:56:26,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399970732] [2021-06-07 02:56:26,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-07 02:56:26,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 02:56:26,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-07 02:56:26,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2021-06-07 02:56:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:56:26,824 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 02:56:26,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 02:56:26,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:26,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:26,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:26,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:56:26,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:26,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:26,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:26,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:26,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:56:26,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-07 02:56:26,824 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 81 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 59 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 68 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-07 02:56:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 02:56:28,336 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2021-06-07 02:56:29,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-07 02:56:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 02:56:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 02:56:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-07 02:56:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-07 02:56:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-07 02:56:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-07 02:56:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-07 02:56:29,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable676 [2021-06-07 02:56:29,733 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 02:56:29,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 02:56:29,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1722331584, now seen corresponding path program 21 times [2021-06-07 02:56:29,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 02:56:29,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742883004] [2021-06-07 02:56:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 02:56:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 02:56:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 02:56:29,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 02:56:29,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742883004] [2021-06-07 02:56:29,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742883004] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 02:56:29,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486155789] [2021-06-07 02:56:29,966 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 02:56:30,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-07 02:56:30,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 02:56:30,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-07 02:56:30,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 02:56:30,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:30,500 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:30,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 02:56:30,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-06-07 02:56:30,505 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:30,666 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-06-07 02:56:30,666 INFO L628 ElimStorePlain]: treesize reduction 73, result has 69.2 percent of original size [2021-06-07 02:56:30,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:30,671 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:30,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-06-07 02:56:30,675 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:30,743 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:30,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:56:30,749 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:30,815 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:30,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-06-07 02:56:30,820 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-07 02:56:30,913 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 02:56:30,917 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2021-06-07 02:56:30,917 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:249, output treesize:150 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown