/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random7777.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 15:25:15,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 15:25:15,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 15:25:15,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 15:25:15,398 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-NewStatesSleepPersistentFixedOrder-NoLbe-Random7777.epf [2021-07-10 15:25:15,426 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 15:25:15,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 15:25:15,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 15:25:15,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 15:25:15,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 15:25:15,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 15:25:15,429 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 15:25:15,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 15:25:15,430 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 15:25:15,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 15:25:15,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 15:25:15,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 15:25:15,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 15:25:15,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 15:25:15,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 15:25:15,431 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 15:25:15,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 15:25:15,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 15:25:15,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 15:25:15,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 15:25:15,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 15:25:15,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 15:25:15,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 15:25:15,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 15:25:15,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 15:25:15,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 15:25:15,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 15:25:15,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 15:25:15,444 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-07-10 15:25:15,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 15:25:15,444 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 15:25:15,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 15:25:15,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 15:25:15,444 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-10 15:25:15,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-10 15:25:15,444 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 15:25:15,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 15:25:15,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 15:25:15,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 15:25:15,825 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 15:25:15,826 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 15:25:15,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl [2021-07-10 15:25:15,826 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl' [2021-07-10 15:25:15,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 15:25:15,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 15:25:15,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 15:25:15,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 15:25:15,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 15:25:15,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 03:25:15" (1/1) ... [2021-07-10 15:25:15,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 03:25:15" (1/1) ... [2021-07-10 15:25:15,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 15:25:15,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 15:25:15,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 15:25:15,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 15:25:15,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 03:25:15" (1/1) ... [2021-07-10 15:25:15,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 03:25:15" (1/1) ... [2021-07-10 15:25:15,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 03:25:15" (1/1) ... [2021-07-10 15:25:15,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 03:25:15" (1/1) ... [2021-07-10 15:25:15,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 03:25:15" (1/1) ... [2021-07-10 15:25:15,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 03:25:15" (1/1) ... [2021-07-10 15:25:15,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 03:25:15" (1/1) ... [2021-07-10 15:25:15,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 15:25:15,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 15:25:15,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 15:25:15,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 15:25:15,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 03:25:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 15:25:15,958 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 15:25:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 15:25:15,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 15:25:15,959 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 15:25:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 15:25:15,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 15:25:15,960 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 15:25:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 15:25:15,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 15:25:15,961 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 15:25:16,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 15:25:16,336 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-07-10 15:25:16,337 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2021-07-10 15:25:16,338 INFO L202 PluginConnector]: Adding new model unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:25:16 BoogieIcfgContainer [2021-07-10 15:25:16,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 15:25:16,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 15:25:16,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 15:25:16,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 15:25:16,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 03:25:15" (1/2) ... [2021-07-10 15:25:16,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2370e5fa and model type unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:25:16, skipping insertion in model container [2021-07-10 15:25:16,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:25:16" (2/2) ... [2021-07-10 15:25:16,344 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.bpl [2021-07-10 15:25:16,348 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 15:25:16,348 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 15:25:16,348 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 15:25:16,353 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 15:25:16,386 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-10 15:25:16,412 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-10 15:25:16,529 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 15:25:16,529 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 15:25:16,530 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 15:25:16,531 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 15:25:16,531 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 15:25:16,531 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 15:25:16,531 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 15:25:16,547 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 15:25:16,607 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 15:25:16,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:25:16,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1691970071, now seen corresponding path program 1 times [2021-07-10 15:25:16,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:25:16,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679950980] [2021-07-10 15:25:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:25:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:25:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:25:16,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:25:16,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679950980] [2021-07-10 15:25:16,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679950980] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 15:25:16,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 15:25:16,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-10 15:25:16,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230429405] [2021-07-10 15:25:16,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-10 15:25:16,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:25:16,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-10 15:25:16,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-10 15:25:16,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:25:16,806 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:25:16,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 15:25:16,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:25:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:25:16,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 15:25:16,833 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 15:25:16,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:25:16,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1101849413, now seen corresponding path program 1 times [2021-07-10 15:25:16,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:25:16,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071128795] [2021-07-10 15:25:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:25:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:25:18,238 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 5498 DAG size of output: 50 [2021-07-10 15:25:18,371 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2021-07-10 15:25:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:25:18,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:25:18,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071128795] [2021-07-10 15:25:18,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071128795] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:25:18,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931432759] [2021-07-10 15:25:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:25:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:25:18,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-10 15:25:18,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 15:25:19,669 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 2127 DAG size of output: 38 [2021-07-10 15:25:19,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-10 15:25:19,760 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 15:25:19,778 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:25:19,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-07-10 15:25:19,792 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-07-10 15:25:19,799 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:25:19,799 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 18 [2021-07-10 15:25:19,800 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-07-10 15:25:19,820 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:25:19,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 17 treesize of output 64 [2021-07-10 15:25:19,849 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-07-10 15:25:19,901 INFO L628 ElimStorePlain]: treesize reduction 61, result has 26.5 percent of original size [2021-07-10 15:25:19,902 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-10 15:25:19,902 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:108, output treesize:22 [2021-07-10 15:25:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:25:19,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931432759] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:25:19,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 15:25:19,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-07-10 15:25:19,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480955435] [2021-07-10 15:25:19,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-10 15:25:19,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:25:19,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-10 15:25:19,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-10 15:25:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:25:19,934 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:25:19,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 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) [2021-07-10 15:25:19,934 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:25:19,934 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:25:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:25:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:25:20,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:25:20,176 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 15:25:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:25:20,176 INFO L82 PathProgramCache]: Analyzing trace with hash 12021801, now seen corresponding path program 2 times [2021-07-10 15:25:20,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:25:20,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956016790] [2021-07-10 15:25:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:25:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:25:21,251 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 2888 DAG size of output: 57 [2021-07-10 15:25:21,447 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-07-10 15:25:23,582 WARN L205 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 7770 DAG size of output: 51 [2021-07-10 15:25:23,751 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-07-10 15:25:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:25:23,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:25:23,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956016790] [2021-07-10 15:25:23,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956016790] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:25:23,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769765868] [2021-07-10 15:25:23,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:25:23,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 15:25:23,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 15:25:23,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-10 15:25:23,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 15:25:24,891 WARN L205 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 2127 DAG size of output: 32 [2021-07-10 15:25:24,925 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:25:24,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 37 [2021-07-10 15:25:24,935 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-07-10 15:25:24,972 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:25:24,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 19 treesize of output 64 [2021-07-10 15:25:25,008 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-07-10 15:25:25,014 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:25:25,014 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 18 [2021-07-10 15:25:25,016 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-10 15:25:25,066 INFO L628 ElimStorePlain]: treesize reduction 28, result has 53.3 percent of original size [2021-07-10 15:25:25,068 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-07-10 15:25:25,068 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:85, output treesize:32 [2021-07-10 15:25:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:25:25,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769765868] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:25:25,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 15:25:25,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-07-10 15:25:25,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372307521] [2021-07-10 15:25:25,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 15:25:25,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:25:25,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 15:25:25,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-07-10 15:25:25,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:25:25,131 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:25:25,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 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) [2021-07-10 15:25:25,131 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:25:25,131 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:25:25,131 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:25:25,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:25:25,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:25:25,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:25:25,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-07-10 15:25:25,397 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 15:25:25,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:25:25,397 INFO L82 PathProgramCache]: Analyzing trace with hash 182291067, now seen corresponding path program 3 times [2021-07-10 15:25:25,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:25:25,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106660142] [2021-07-10 15:25:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:25:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:25:25,970 WARN L205 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 2845 DAG size of output: 42 [2021-07-10 15:25:27,033 WARN L205 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 25 [2021-07-10 15:25:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:25:27,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:25:27,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106660142] [2021-07-10 15:25:27,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106660142] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:25:27,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006633236] [2021-07-10 15:25:27,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:25:27,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-10 15:25:27,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 15:25:27,104 WARN L261 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 25 conjunts are in the unsatisfiable core [2021-07-10 15:25:27,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 15:25:28,210 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 2127 DAG size of output: 25 [2021-07-10 15:25:28,233 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:25:28,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 37 [2021-07-10 15:25:28,244 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 15:25:28,266 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:25:28,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 64 [2021-07-10 15:25:28,291 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2021-07-10 15:25:28,309 INFO L628 ElimStorePlain]: treesize reduction 18, result has 50.0 percent of original size [2021-07-10 15:25:28,310 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-10 15:25:28,310 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:59, output treesize:18 [2021-07-10 15:25:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:25:28,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006633236] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:25:28,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 15:25:28,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-07-10 15:25:28,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437896342] [2021-07-10 15:25:28,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-10 15:25:28,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:25:28,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-10 15:25:28,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-07-10 15:25:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:25:28,346 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:25:28,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 15:25:28,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:25:28,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:25:28,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:25:28,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:25:28,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:25:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:25:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:25:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:25:28,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:25:28,613 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 15:25:28,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:25:28,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1165671017, now seen corresponding path program 4 times [2021-07-10 15:25:28,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:25:28,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327596742] [2021-07-10 15:25:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:25:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:25:29,204 WARN L205 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 2844 DAG size of output: 41 [2021-07-10 15:25:30,248 WARN L205 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 14 [2021-07-10 15:25:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:25:30,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:25:30,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327596742] [2021-07-10 15:25:30,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327596742] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:25:30,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028930718] [2021-07-10 15:25:30,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:25:30,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 15:25:30,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 15:25:30,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 22 conjunts are in the unsatisfiable core [2021-07-10 15:25:30,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 15:25:34,001 WARN L205 SmtUtils]: Spent 3.60 s on a formula simplification. DAG size of input: 5724 DAG size of output: 48 [2021-07-10 15:25:34,045 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:25:34,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 64 [2021-07-10 15:25:34,064 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 15:25:34,065 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:25:34,065 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 15:25:34,065 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:3 [2021-07-10 15:25:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:25:34,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028930718] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:25:34,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 15:25:34,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-07-10 15:25:34,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102887234] [2021-07-10 15:25:34,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-10 15:25:34,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:25:34,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-10 15:25:34,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-07-10 15:25:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:25:34,074 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:25:34,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 15:25:34,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:25:34,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:25:34,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:25:34,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:25:34,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:25:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:25:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:25:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:25:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:25:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 15:25:34,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:25:34,383 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 15:25:34,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:25:34,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1585678395, now seen corresponding path program 5 times [2021-07-10 15:25:34,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:25:34,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349899636] [2021-07-10 15:25:34,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:25:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:25:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:25:34,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:25:34,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349899636] [2021-07-10 15:25:34,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349899636] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:25:34,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394920088] [2021-07-10 15:25:34,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:25:34,454 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-07-10 15:25:34,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 15:25:34,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 15:25:34,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 15:25:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:25:34,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394920088] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 15:25:34,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-10 15:25:34,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-07-10 15:25:34,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465608201] [2021-07-10 15:25:34,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-10 15:25:34,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:25:34,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-10 15:25:34,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-07-10 15:25:34,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:25:34,502 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:25:34,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 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) [2021-07-10 15:25:34,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:25:34,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:25:34,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:25:34,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:25:34,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 15:25:34,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:25:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:25:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:25:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:25:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:25:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 15:25:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:25:34,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:25:34,753 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 15:25:34,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:25:34,754 INFO L82 PathProgramCache]: Analyzing trace with hash 22154326, now seen corresponding path program 1 times [2021-07-10 15:25:34,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:25:34,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069809875] [2021-07-10 15:25:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:25:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:25:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:25:34,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:25:34,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069809875] [2021-07-10 15:25:34,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069809875] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:25:34,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586470019] [2021-07-10 15:25:34,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:25:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:25:34,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-10 15:25:34,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 15:26:05,793 WARN L205 SmtUtils]: Spent 30.29 s on a formula simplification. DAG size of input: 51297 DAG size of output: 54 [2021-07-10 15:26:06,018 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2021-07-10 15:26:06,019 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:26:06,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 17 new quantified variables, introduced 36 case distinctions, treesize of input 35 treesize of output 319 [2021-07-10 15:26:07,465 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 397 DAG size of output: 329 [2021-07-10 15:26:07,643 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 413 DAG size of output: 345 [2021-07-10 15:26:07,817 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 429 DAG size of output: 361 [2021-07-10 15:26:08,160 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 627 DAG size of output: 475 [2021-07-10 15:26:08,454 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 627 DAG size of output: 475 [2021-07-10 15:26:08,828 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 635 DAG size of output: 484 [2021-07-10 15:26:09,131 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 486 DAG size of output: 531 [2021-07-10 15:26:09,361 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 337 [2021-07-10 15:26:09,845 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 249 [2021-07-10 15:26:10,604 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 465 DAG size of output: 333 [2021-07-10 15:26:10,803 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 340 [2021-07-10 15:26:10,947 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 312 [2021-07-10 15:26:11,924 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 304 [2021-07-10 15:26:12,527 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 555 DAG size of output: 414 [2021-07-10 15:26:12,936 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 781 DAG size of output: 584 [2021-07-10 15:26:13,567 WARN L205 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 1036 DAG size of output: 721 [2021-07-10 15:26:14,194 WARN L205 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 1036 DAG size of output: 721 [2021-07-10 15:26:14,898 WARN L205 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 1042 DAG size of output: 718 [2021-07-10 15:26:16,318 WARN L205 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 720 DAG size of output: 933 [2021-07-10 15:26:16,514 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 493 DAG size of output: 445 [2021-07-10 15:26:16,652 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 302 [2021-07-10 15:26:16,766 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 304 [2021-07-10 15:26:16,931 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 320 [2021-07-10 15:26:17,979 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 437 DAG size of output: 263 [2021-07-10 15:26:18,139 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 496 DAG size of output: 297 [2021-07-10 15:26:18,342 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 697 DAG size of output: 385 [2021-07-10 15:26:18,870 WARN L205 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 1145 DAG size of output: 750 [2021-07-10 15:26:19,420 WARN L205 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 1145 DAG size of output: 750 [2021-07-10 15:26:20,000 WARN L205 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 1150 DAG size of output: 755 [2021-07-10 15:26:20,419 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 466 DAG size of output: 378 [2021-07-10 15:26:20,628 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 262 [2021-07-10 15:26:20,816 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 321 [2021-07-10 15:26:21,399 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 634 DAG size of output: 421 [2021-07-10 15:26:21,615 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 634 DAG size of output: 421 [2021-07-10 15:26:21,895 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 637 DAG size of output: 424 [2021-07-10 15:26:22,203 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 182 [2021-07-10 15:26:22,420 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-07-10 15:26:22,480 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:26:22,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 29 treesize of output 142 [2021-07-10 15:26:22,632 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2021-07-10 15:26:22,634 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-10 15:26:22,635 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-10 15:26:22,675 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:26:22,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 27 treesize of output 99 [2021-07-10 15:26:22,711 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-10 15:26:22,714 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-10 15:26:22,715 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-10 15:26:22,729 INFO L628 ElimStorePlain]: treesize reduction 31, result has 32.6 percent of original size [2021-07-10 15:26:22,730 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-10 15:26:22,730 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 1 variables, input treesize:183, output treesize:15 [2021-07-10 15:26:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:26:22,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586470019] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:26:22,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 15:26:22,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-07-10 15:26:22,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033294741] [2021-07-10 15:26:22,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-10 15:26:22,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:26:22,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-10 15:26:22,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-07-10 15:26:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:26:22,763 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:26:22,763 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 15:26:22,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:26:22,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:26:22,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:26:22,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:26:22,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 15:26:22,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:26:22,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:26:22,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:26:22,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:26:22,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:26:22,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:26:22,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 15:26:22,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:26:22,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:26:23,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-07-10 15:26:23,069 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 15:26:23,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:26:23,070 INFO L82 PathProgramCache]: Analyzing trace with hash -77681240, now seen corresponding path program 2 times [2021-07-10 15:26:23,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:26:23,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311748624] [2021-07-10 15:26:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:26:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:26:23,882 WARN L205 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 5498 DAG size of output: 50 [2021-07-10 15:26:24,000 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2021-07-10 15:26:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:26:24,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:26:24,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311748624] [2021-07-10 15:26:24,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311748624] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:26:24,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945736028] [2021-07-10 15:26:24,025 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:26:24,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 15:26:24,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 15:26:24,053 WARN L261 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 40 conjunts are in the unsatisfiable core [2021-07-10 15:26:24,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 15:26:24,445 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 1256 DAG size of output: 44 [2021-07-10 15:26:24,570 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:26:24,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 33 treesize of output 193 [2021-07-10 15:26:25,068 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-07-10 15:26:25,189 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:26:25,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 35 treesize of output 252 [2021-07-10 15:26:25,865 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 413 DAG size of output: 290 [2021-07-10 15:26:25,977 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 413 DAG size of output: 290 [2021-07-10 15:26:26,116 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 424 DAG size of output: 301 [2021-07-10 15:26:26,386 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 299 [2021-07-10 15:26:27,193 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 400 DAG size of output: 261 [2021-07-10 15:26:27,305 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 425 DAG size of output: 265 [2021-07-10 15:26:27,448 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 476 DAG size of output: 273 [2021-07-10 15:26:27,663 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 373 [2021-07-10 15:26:27,860 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 373 [2021-07-10 15:26:28,078 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 609 DAG size of output: 378 [2021-07-10 15:26:28,353 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 380 DAG size of output: 421 [2021-07-10 15:26:29,407 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2021-07-10 15:26:29,564 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2021-07-10 15:26:29,564 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:26:29,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 17 new quantified variables, introduced 36 case distinctions, treesize of input 37 treesize of output 319 [2021-07-10 15:26:30,869 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 599 DAG size of output: 355 [2021-07-10 15:26:31,090 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 617 DAG size of output: 372 [2021-07-10 15:26:31,333 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 617 DAG size of output: 372 [2021-07-10 15:26:31,596 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 630 DAG size of output: 385 [2021-07-10 15:26:31,807 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 380 [2021-07-10 15:26:32,340 WARN L205 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 474 [2021-07-10 15:26:32,805 WARN L205 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 479 [2021-07-10 15:26:33,007 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 277 [2021-07-10 15:26:34,328 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 272 [2021-07-10 15:26:34,521 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 287 [2021-07-10 15:26:34,800 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 454 DAG size of output: 366 [2021-07-10 15:26:35,002 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 257 [2021-07-10 15:26:35,155 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 232 [2021-07-10 15:26:36,836 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 443 DAG size of output: 266 [2021-07-10 15:26:37,029 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 444 DAG size of output: 267 [2021-07-10 15:26:37,312 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 516 DAG size of output: 337 [2021-07-10 15:26:37,663 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 600 DAG size of output: 419 [2021-07-10 15:26:38,391 WARN L205 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 935 DAG size of output: 656 [2021-07-10 15:26:39,406 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 1039 DAG size of output: 775 [2021-07-10 15:26:40,624 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1201 DAG size of output: 778 [2021-07-10 15:26:42,429 WARN L205 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 1275 DAG size of output: 807 [2021-07-10 15:26:43,883 WARN L205 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 1275 DAG size of output: 807 [2021-07-10 15:26:45,456 WARN L205 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 1284 DAG size of output: 816 [2021-07-10 15:26:46,419 WARN L205 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 815 DAG size of output: 958 [2021-07-10 15:26:47,009 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 648 DAG size of output: 543 [2021-07-10 15:26:47,344 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 374 [2021-07-10 15:26:48,130 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 433 DAG size of output: 216 [2021-07-10 15:26:48,298 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 436 DAG size of output: 219 [2021-07-10 15:26:48,653 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 536 DAG size of output: 270 [2021-07-10 15:26:49,141 WARN L205 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 537 DAG size of output: 541 [2021-07-10 15:26:49,717 WARN L205 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 454 DAG size of output: 549 [2021-07-10 15:26:50,793 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 455 DAG size of output: 273 [2021-07-10 15:26:50,916 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 205 [2021-07-10 15:26:51,103 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 531 DAG size of output: 311 [2021-07-10 15:26:51,441 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 847 DAG size of output: 416 [2021-07-10 15:26:51,821 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 847 DAG size of output: 416 [2021-07-10 15:26:52,196 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 852 DAG size of output: 288 [2021-07-10 15:26:52,492 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-07-10 15:26:52,542 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:26:52,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 31 treesize of output 142 [2021-07-10 15:26:52,642 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-10 15:26:52,680 INFO L628 ElimStorePlain]: treesize reduction 77, result has 18.9 percent of original size [2021-07-10 15:26:52,681 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-10 15:26:52,681 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:188, output treesize:18 [2021-07-10 15:26:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:26:52,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945736028] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:26:52,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 15:26:52,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-10 15:26:52,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036799071] [2021-07-10 15:26:52,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-10 15:26:52,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:26:52,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-10 15:26:52,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-07-10 15:26:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:26:52,717 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:26:52,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 15:26:52,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:26:52,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:26:52,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:26:52,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:26:52,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 15:26:52,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:26:52,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:26:52,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:26:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:26:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:26:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:26:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:26:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 15:26:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:26:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:26:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 15:26:53,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1043,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:26:53,050 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 15:26:53,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:26:53,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1122383510, now seen corresponding path program 3 times [2021-07-10 15:26:53,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:26:53,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656844373] [2021-07-10 15:26:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:26:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:26:54,062 WARN L205 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 5518 DAG size of output: 38 [2021-07-10 15:26:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:26:54,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:26:54,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656844373] [2021-07-10 15:26:54,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656844373] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:26:54,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905347996] [2021-07-10 15:26:54,149 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:26:54,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-10 15:26:54,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 15:26:54,177 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 44 conjunts are in the unsatisfiable core [2021-07-10 15:26:54,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 15:26:54,609 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 1256 DAG size of output: 37 [2021-07-10 15:26:54,794 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2021-07-10 15:26:54,794 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:26:54,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 17 new quantified variables, introduced 36 case distinctions, treesize of input 39 treesize of output 319 [2021-07-10 15:26:55,424 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 239 [2021-07-10 15:26:55,550 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 239 [2021-07-10 15:26:55,678 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 254 [2021-07-10 15:26:55,821 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 348 [2021-07-10 15:26:56,203 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 266 [2021-07-10 15:26:56,443 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 259 [2021-07-10 15:26:57,803 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 263 [2021-07-10 15:26:57,994 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 506 DAG size of output: 359 [2021-07-10 15:26:58,263 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 586 DAG size of output: 439 [2021-07-10 15:26:58,638 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 626 DAG size of output: 468 [2021-07-10 15:26:58,772 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 263 [2021-07-10 15:27:00,140 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 214 [2021-07-10 15:27:00,343 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 425 DAG size of output: 293 [2021-07-10 15:27:01,052 WARN L205 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 822 DAG size of output: 615 [2021-07-10 15:27:01,898 WARN L205 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 966 DAG size of output: 726 [2021-07-10 15:27:02,941 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 1082 DAG size of output: 790 [2021-07-10 15:27:03,950 WARN L205 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 1082 DAG size of output: 790 [2021-07-10 15:27:05,107 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 1091 DAG size of output: 799 [2021-07-10 15:27:06,284 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 798 DAG size of output: 853 [2021-07-10 15:27:07,740 WARN L205 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 788 DAG size of output: 910 [2021-07-10 15:27:07,878 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 428 DAG size of output: 298 [2021-07-10 15:27:08,595 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 782 DAG size of output: 350 [2021-07-10 15:27:08,933 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 860 DAG size of output: 397 [2021-07-10 15:27:09,223 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 860 DAG size of output: 397 [2021-07-10 15:27:09,693 WARN L205 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 865 DAG size of output: 319 [2021-07-10 15:27:09,856 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 163 [2021-07-10 15:27:10,494 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-07-10 15:27:10,614 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:27:10,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 37 treesize of output 252 [2021-07-10 15:27:11,419 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 299 [2021-07-10 15:27:11,751 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 433 [2021-07-10 15:27:12,004 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 387 [2021-07-10 15:27:12,135 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 319 [2021-07-10 15:27:12,239 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 327 [2021-07-10 15:27:12,407 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 225 [2021-07-10 15:27:12,907 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 454 DAG size of output: 365 [2021-07-10 15:27:13,507 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 678 DAG size of output: 465 [2021-07-10 15:27:13,872 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 813 DAG size of output: 537 [2021-07-10 15:27:14,056 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 259 [2021-07-10 15:27:14,433 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 175 [2021-07-10 15:27:14,571 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 196 [2021-07-10 15:27:15,181 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 515 DAG size of output: 281 [2021-07-10 15:27:15,471 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 313 [2021-07-10 15:27:16,181 WARN L205 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 1161 DAG size of output: 707 [2021-07-10 15:27:16,917 WARN L205 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 1161 DAG size of output: 707 [2021-07-10 15:27:17,684 WARN L205 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 1166 DAG size of output: 712 [2021-07-10 15:27:18,368 WARN L205 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 714 DAG size of output: 826 [2021-07-10 15:27:18,514 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 310 [2021-07-10 15:27:18,957 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 510 [2021-07-10 15:27:19,327 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 442 DAG size of output: 341 [2021-07-10 15:27:19,495 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 596 DAG size of output: 323 [2021-07-10 15:27:19,665 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 596 DAG size of output: 323 [2021-07-10 15:27:19,863 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 600 DAG size of output: 327 [2021-07-10 15:27:20,135 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2021-07-10 15:27:20,210 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:27:20,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 35 treesize of output 193 [2021-07-10 15:27:20,787 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-10 15:27:20,809 INFO L628 ElimStorePlain]: treesize reduction 46, result has 28.1 percent of original size [2021-07-10 15:27:20,809 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-10 15:27:20,810 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:145, output treesize:18 [2021-07-10 15:27:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:27:20,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905347996] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:27:20,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 15:27:20,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-07-10 15:27:20,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441755123] [2021-07-10 15:27:20,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-07-10 15:27:20,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:27:20,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-07-10 15:27:20,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-07-10 15:27:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:27:20,844 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:27:20,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 15:27:20,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:27:20,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:27:20,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:27:20,845 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:27:20,845 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 15:27:20,845 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:27:20,845 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:27:20,845 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 15:27:20,845 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:27:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:27:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:27:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:27:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:27:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 15:27:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:27:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:27:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 15:27:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 15:27:21,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3172,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:27:21,197 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 15:27:21,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:27:21,198 INFO L82 PathProgramCache]: Analyzing trace with hash -330314904, now seen corresponding path program 4 times [2021-07-10 15:27:21,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:27:21,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962807291] [2021-07-10 15:27:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:27:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:27:22,261 WARN L205 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 5511 DAG size of output: 26 [2021-07-10 15:27:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:27:22,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:27:22,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962807291] [2021-07-10 15:27:22,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962807291] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:27:22,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755056313] [2021-07-10 15:27:22,330 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:27:22,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 15:27:22,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 15:27:22,357 WARN L261 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 48 conjunts are in the unsatisfiable core [2021-07-10 15:27:22,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 15:27:22,803 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 1256 DAG size of output: 30 [2021-07-10 15:27:22,927 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:27:22,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 39 treesize of output 252 [2021-07-10 15:27:24,061 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 15:27:24,211 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2021-07-10 15:27:24,212 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 15:27:24,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 17 new quantified variables, introduced 36 case distinctions, treesize of input 41 treesize of output 319 [2021-07-10 15:27:25,212 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 322 [2021-07-10 15:27:25,431 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 467 DAG size of output: 397 [2021-07-10 15:27:25,670 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 483 DAG size of output: 412 [2021-07-10 15:27:25,918 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 483 DAG size of output: 412 [2021-07-10 15:27:26,221 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 496 DAG size of output: 425 [2021-07-10 15:27:26,734 WARN L205 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 427 DAG size of output: 662 [2021-07-10 15:27:27,262 WARN L205 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 512 [2021-07-10 15:27:27,797 WARN L205 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 406 DAG size of output: 627 [2021-07-10 15:27:28,242 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 585 [2021-07-10 15:27:28,747 WARN L205 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 381 DAG size of output: 569 [2021-07-10 15:27:29,098 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 356 DAG size of output: 436 [2021-07-10 15:27:29,743 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 445 [2021-07-10 15:27:30,382 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 250 [2021-07-10 15:27:30,983 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 257 [2021-07-10 15:27:31,109 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 263 [2021-07-10 15:27:31,394 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 457 DAG size of output: 414 [2021-07-10 15:27:31,778 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 481 [2021-07-10 15:27:32,364 WARN L205 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 804 DAG size of output: 524 [2021-07-10 15:27:32,625 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 359 [2021-07-10 15:27:32,753 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 281 [2021-07-10 15:27:33,396 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 269 [2021-07-10 15:27:33,891 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 400 DAG size of output: 374 [2021-07-10 15:27:34,401 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 496 DAG size of output: 440 [2021-07-10 15:27:34,751 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 504 DAG size of output: 448 [2021-07-10 15:27:35,902 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 1143 DAG size of output: 804 [2021-07-10 15:27:37,495 WARN L205 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 1431 DAG size of output: 1061 [2021-07-10 15:27:39,302 WARN L205 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 1620 DAG size of output: 1153 [2021-07-10 15:27:39,815 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 473 [2021-07-10 15:27:40,230 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 553 [2021-07-10 15:27:40,610 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 531 [2021-07-10 15:27:41,335 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 196 [2021-07-10 15:27:41,941 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 434 DAG size of output: 323 [2021-07-10 15:27:42,262 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 382 [2021-07-10 15:27:42,442 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 303 [2021-07-10 15:27:42,579 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 271 [2021-07-10 15:27:43,652 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 246 [2021-07-10 15:27:43,959 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 516 DAG size of output: 283 [2021-07-10 15:27:44,835 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 716 DAG size of output: 353 [2021-07-10 15:27:45,428 WARN L205 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 975 DAG size of output: 515 [2021-07-10 15:27:46,240 WARN L205 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 1200 DAG size of output: 659 [2021-07-10 15:27:47,184 WARN L205 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 1346 DAG size of output: 700 [2021-07-10 15:27:49,715 WARN L205 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 2733 DAG size of output: 1458 [2021-07-10 15:27:52,409 WARN L205 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 2733 DAG size of output: 1458 [2021-07-10 15:27:55,229 WARN L205 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 2742 DAG size of output: 1467 [2021-07-10 15:27:55,350 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 1464 [2021-07-10 15:27:55,459 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 1464 [2021-07-10 15:27:56,606 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 708 DAG size of output: 875 [2021-07-10 15:27:57,030 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 522 DAG size of output: 537 [2021-07-10 15:27:57,553 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 477 DAG size of output: 334 [2021-07-10 15:27:58,471 WARN L205 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 523 DAG size of output: 540 [2021-07-10 15:27:58,886 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 470 DAG size of output: 273 [2021-07-10 15:27:59,356 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 564 DAG size of output: 239 [2021-07-10 15:28:00,681 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 895 DAG size of output: 952 [2021-07-10 15:28:00,927 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 499 DAG size of output: 371 [2021-07-10 15:28:01,925 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 435 DAG size of output: 262 [2021-07-10 15:28:02,230 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 658 DAG size of output: 397 [2021-07-10 15:28:02,658 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 253 [2021-07-10 15:28:03,144 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 226 [2021-07-10 15:28:03,358 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 430 DAG size of output: 269 [2021-07-10 15:28:03,656 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 728 DAG size of output: 410 [2021-07-10 15:28:04,110 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 1163 DAG size of output: 505 [2021-07-10 15:28:04,583 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 1163 DAG size of output: 505 [2021-07-10 15:28:05,112 WARN L205 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 1167 DAG size of output: 369 [2021-07-10 15:28:05,261 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 245 [2021-07-10 15:28:05,629 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 217 [2021-07-10 15:28:05,898 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2021-07-10 15:28:05,914 INFO L628 ElimStorePlain]: treesize reduction 18, result has 50.0 percent of original size [2021-07-10 15:28:05,915 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-10 15:28:05,915 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:99, output treesize:18 [2021-07-10 15:28:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:28:05,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755056313] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:28:05,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 15:28:05,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-07-10 15:28:05,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084691335] [2021-07-10 15:28:05,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-10 15:28:05,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 15:28:05,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-10 15:28:05,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-10 15:28:05,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:28:05,947 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 15:28:05,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 15:28:05,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:28:05,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:28:05,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:28:05,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:28:05,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 15:28:05,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:28:05,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:28:05,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 15:28:05,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 15:28:05,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 15:28:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 15:28:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 15:28:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 15:28:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 15:28:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 15:28:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:28:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 15:28:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 15:28:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 15:28:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 15:28:06,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5089 [2021-07-10 15:28:06,313 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 15:28:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 15:28:06,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1880674518, now seen corresponding path program 5 times [2021-07-10 15:28:06,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 15:28:06,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031859742] [2021-07-10 15:28:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 15:28:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 15:28:07,357 WARN L205 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 14 [2021-07-10 15:28:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 15:28:07,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 15:28:07,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031859742] [2021-07-10 15:28:07,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031859742] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 15:28:07,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815391206] [2021-07-10 15:28:07,382 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 15:28:07,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-10 15:28:07,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 15:28:07,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 40 conjunts are in the unsatisfiable core [2021-07-10 15:28:07,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown