/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-NewStatesSleepPersistent-NoLbe-Lockstep.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 08:26:47,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 08:26:47,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 08:26:47,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 08:26:47,161 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-NewStatesSleepPersistent-NoLbe-Lockstep.epf [2021-07-10 08:26:47,197 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 08:26:47,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 08:26:47,197 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 08:26:47,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 08:26:47,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 08:26:47,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 08:26:47,200 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 08:26:47,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 08:26:47,201 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 08:26:47,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 08:26:47,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 08:26:47,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 08:26:47,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 08:26:47,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 08:26:47,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 08:26:47,202 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 08:26:47,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 08:26:47,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 08:26:47,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 08:26:47,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 08:26:47,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 08:26:47,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 08:26:47,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 08:26:47,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 08:26:47,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 08:26:47,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 08:26:47,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 08:26:47,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 08:26:47,205 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-10 08:26:47,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 08:26:47,205 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 08:26:47,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 08:26:47,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 08:26:47,206 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2021-07-10 08:26:47,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 08:26:47,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 08:26:47,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 08:26:47,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 08:26:47,525 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 08:26:47,526 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 08:26:47,527 INFO L432 ainManager$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 08:26:47,527 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 08:26:47,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 08:26:47,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 08:26:47,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 08:26:47,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 08:26:47,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 08:26:47,574 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 08:26:47" (1/1) ... [2021-07-10 08:26:47,582 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 08:26:47" (1/1) ... [2021-07-10 08:26:47,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 08:26:47,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 08:26:47,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 08:26:47,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 08:26:47,598 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 08:26:47" (1/1) ... [2021-07-10 08:26:47,598 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 08:26:47" (1/1) ... [2021-07-10 08:26:47,609 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 08:26:47" (1/1) ... [2021-07-10 08:26:47,609 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 08:26:47" (1/1) ... [2021-07-10 08:26:47,615 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 08:26:47" (1/1) ... [2021-07-10 08:26:47,617 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 08:26:47" (1/1) ... [2021-07-10 08:26:47,618 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 08:26:47" (1/1) ... [2021-07-10 08:26:47,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 08:26:47,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 08:26:47,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 08:26:47,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 08:26:47,622 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 08:26:47" (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 08:26:47,695 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 08:26:47,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 08:26:47,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 08:26:47,695 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 08:26:47,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 08:26:47,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 08:26:47,696 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 08:26:47,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 08:26:47,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 08:26:47,698 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 08:26:48,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 08:26:48,091 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-07-10 08:26:48,092 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2021-07-10 08:26:48,094 INFO L202 PluginConnector]: Adding new model unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:26:48 BoogieIcfgContainer [2021-07-10 08:26:48,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 08:26:48,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 08:26:48,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 08:26:48,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 08:26:48,098 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 08:26:47" (1/2) ... [2021-07-10 08:26:48,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fe4435 and model type unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:26:48, skipping insertion in model container [2021-07-10 08:26:48,099 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 08:26:48" (2/2) ... [2021-07-10 08:26:48,100 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.bpl [2021-07-10 08:26:48,105 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 08:26:48,105 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 08:26:48,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 08:26:48,106 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 08:26:48,128 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-10 08:26:48,148 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 08:26:48,211 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 08:26:48,212 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 08:26:48,212 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 08:26:48,217 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 08:26:48,217 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 08:26:48,217 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 08:26:48,218 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 08:26:48,218 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 08:26:48,278 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:26:48,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:26:48,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1744122695, now seen corresponding path program 1 times [2021-07-10 08:26:48,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:26:48,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984507229] [2021-07-10 08:26:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:26:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:26:48,440 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 08:26:48,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:26:48,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984507229] [2021-07-10 08:26:48,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984507229] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 08:26:48,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 08:26:48,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-10 08:26:48,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67827424] [2021-07-10 08:26:48,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-10 08:26:48,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:26:48,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-10 08:26:48,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-10 08:26:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:26:48,458 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:26:48,459 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 08:26:48,459 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:26:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:26:48,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 08:26:48,494 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:26:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:26:48,494 INFO L82 PathProgramCache]: Analyzing trace with hash -298071255, now seen corresponding path program 1 times [2021-07-10 08:26:48,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:26:48,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899028887] [2021-07-10 08:26:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:26:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:26:49,935 WARN L205 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 5498 DAG size of output: 50 [2021-07-10 08:26:50,112 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2021-07-10 08:26:50,930 WARN L205 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 5496 DAG size of output: 12 [2021-07-10 08:26:50,950 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 08:26:50,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:26:50,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899028887] [2021-07-10 08:26:50,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899028887] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:26:50,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995690882] [2021-07-10 08:26:50,951 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 08:26:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:26:51,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-10 08:26:51,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:26:52,344 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 2125 DAG size of output: 13 [2021-07-10 08:26:52,370 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 08:26:52,373 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 08:26:52,375 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:26:52,376 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 08:26:52,376 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2021-07-10 08:26:52,390 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 08:26:52,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995690882] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:26:52,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:26:52,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-07-10 08:26:52,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531127651] [2021-07-10 08:26:52,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-10 08:26:52,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:26:52,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-10 08:26:52,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-07-10 08:26:52,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:26:52,394 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:26:52,394 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 08:26:52,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:26:52,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:26:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:26:52,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:26:52,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 08:26:52,677 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:26:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:26:52,678 INFO L82 PathProgramCache]: Analyzing trace with hash 818425735, now seen corresponding path program 2 times [2021-07-10 08:26:52,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:26:52,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913469410] [2021-07-10 08:26:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:26:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:26:53,369 WARN L205 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 2869 DAG size of output: 52 [2021-07-10 08:26:53,555 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2021-07-10 08:26:54,567 WARN L205 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 5579 DAG size of output: 55 [2021-07-10 08:26:55,498 WARN L205 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 5577 DAG size of output: 17 [2021-07-10 08:26:55,534 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 08:26:55,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:26:55,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913469410] [2021-07-10 08:26:55,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913469410] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:26:55,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354434074] [2021-07-10 08:26:55,541 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 08:26:55,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 08:26:55,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 08:26:55,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-10 08:26:55,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:26:56,540 WARN L205 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 2125 DAG size of output: 15 [2021-07-10 08:26:56,560 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:26:56,561 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 08:26:56,564 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 08:26:56,566 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:26:56,566 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 08:26:56,567 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:3 [2021-07-10 08:26:56,579 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 08:26:56,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354434074] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:26:56,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:26:56,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-07-10 08:26:56,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86791751] [2021-07-10 08:26:56,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 08:26:56,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:26:56,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 08:26:56,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-07-10 08:26:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:26:56,582 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:26:56,582 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 08:26:56,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:26:56,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:26:56,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:26:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:26:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:26:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:26:56,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 08:26:56,897 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:26:56,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:26:56,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1070094057, now seen corresponding path program 3 times [2021-07-10 08:26:56,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:26:56,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742133011] [2021-07-10 08:26:56,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:26:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:26:57,480 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 2845 DAG size of output: 42 [2021-07-10 08:26:58,462 WARN L205 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 25 [2021-07-10 08:26:59,347 WARN L205 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 5508 DAG size of output: 14 [2021-07-10 08:26:59,382 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 08:26:59,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:26:59,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742133011] [2021-07-10 08:26:59,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742133011] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:26:59,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376909156] [2021-07-10 08:26:59,383 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 08:26:59,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-10 08:26:59,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 08:26:59,421 WARN L261 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 25 conjunts are in the unsatisfiable core [2021-07-10 08:26:59,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:27:00,479 WARN L205 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 2125 DAG size of output: 16 [2021-07-10 08:27:00,495 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:27:00,496 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 08:27:00,514 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 08:27:00,515 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:27:00,516 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 08:27:00,516 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:3 [2021-07-10 08:27:00,523 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 08:27:00,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376909156] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:00,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:27:00,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-07-10 08:27:00,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948800532] [2021-07-10 08:27:00,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-10 08:27:00,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:27:00,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-10 08:27:00,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-07-10 08:27:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:00,525 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:27:00,525 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 08:27:00,525 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:00,525 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:00,525 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:00,525 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:00,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 08:27:00,813 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:27:00,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:27:00,814 INFO L82 PathProgramCache]: Analyzing trace with hash 281877447, now seen corresponding path program 4 times [2021-07-10 08:27:00,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:27:00,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692015197] [2021-07-10 08:27:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:27:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:27:01,371 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 2844 DAG size of output: 41 [2021-07-10 08:27:02,269 WARN L205 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 14 [2021-07-10 08:27:02,285 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 08:27:02,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:27:02,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692015197] [2021-07-10 08:27:02,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692015197] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:02,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050242891] [2021-07-10 08:27:02,287 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 08:27:02,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 08:27:02,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 08:27:02,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 22 conjunts are in the unsatisfiable core [2021-07-10 08:27:02,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:27:05,894 WARN L205 SmtUtils]: Spent 3.42 s on a formula simplification. DAG size of input: 5724 DAG size of output: 48 [2021-07-10 08:27:05,956 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:27:05,957 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 08:27:06,035 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 08:27:06,036 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:27:06,037 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 08:27:06,037 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:3 [2021-07-10 08:27:06,044 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 08:27:06,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050242891] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:06,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:27:06,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-07-10 08:27:06,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696427747] [2021-07-10 08:27:06,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-10 08:27:06,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:27:06,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-10 08:27:06,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-07-10 08:27:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:06,049 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:27:06,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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 08:27:06,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:06,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:06,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:06,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:06,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 08:27:06,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-07-10 08:27:06,386 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:27:06,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:27:06,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1616966313, now seen corresponding path program 5 times [2021-07-10 08:27:06,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:27:06,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885276951] [2021-07-10 08:27:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:27:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:27:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 08:27:06,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:27:06,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885276951] [2021-07-10 08:27:06,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885276951] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:06,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906094174] [2021-07-10 08:27:06,440 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 08:27:06,478 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-07-10 08:27:06,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 08:27:06,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 08:27:06,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:27:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 08:27:06,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906094174] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:06,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:27:06,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-07-10 08:27:06,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347841409] [2021-07-10 08:27:06,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-10 08:27:06,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:27:06,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-10 08:27:06,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-07-10 08:27:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:06,523 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:27:06,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 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 08:27:06,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:06,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:06,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:06,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:06,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 08:27:06,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 08:27:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:27:06,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 08:27:06,789 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:27:06,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:27:06,793 INFO L82 PathProgramCache]: Analyzing trace with hash -722101400, now seen corresponding path program 1 times [2021-07-10 08:27:06,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:27:06,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135113388] [2021-07-10 08:27:06,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:27:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:27:06,907 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 08:27:06,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:27:06,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135113388] [2021-07-10 08:27:06,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135113388] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:06,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905626146] [2021-07-10 08:27:06,908 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 08:27:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:27:06,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-10 08:27:06,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:27:35,618 WARN L205 SmtUtils]: Spent 28.06 s on a formula simplification. DAG size of input: 51297 DAG size of output: 54 [2021-07-10 08:27:35,684 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:27:35,685 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 08:27:35,792 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 08:27:35,794 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:27:35,794 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 08:27:35,794 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:3 [2021-07-10 08:27:35,801 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 08:27:35,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905626146] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:35,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:27:35,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-07-10 08:27:35,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874667423] [2021-07-10 08:27:35,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-10 08:27:35,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:27:35,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-10 08:27:35,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-07-10 08:27:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:35,803 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:27:35,803 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 08:27:35,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:35,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:35,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:35,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:35,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 08:27:35,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:27:35,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 08:27:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:27:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 08:27:36,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-07-10 08:27:36,240 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:27:36,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:27:36,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1896922678, now seen corresponding path program 2 times [2021-07-10 08:27:36,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:27:36,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444354401] [2021-07-10 08:27:36,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:27:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:27:37,080 WARN L205 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 5496 DAG size of output: 12 [2021-07-10 08:27:37,104 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 08:27:37,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:27:37,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444354401] [2021-07-10 08:27:37,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444354401] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:37,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372684761] [2021-07-10 08:27:37,105 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 08:27:37,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 08:27:37,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 08:27:37,136 WARN L261 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 40 conjunts are in the unsatisfiable core [2021-07-10 08:27:37,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:27:37,601 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 19 [2021-07-10 08:27:37,663 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:27:37,663 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 08:27:37,954 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 08:27:37,956 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:27:37,957 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 08:27:37,957 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:3 [2021-07-10 08:27:37,963 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 08:27:37,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372684761] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:37,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:27:37,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-10 08:27:37,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061252996] [2021-07-10 08:27:37,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-10 08:27:37,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:27:37,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-10 08:27:37,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-07-10 08:27:37,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:37,965 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:27:37,966 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 08:27:37,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:37,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:37,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:37,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:37,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 08:27:37,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:27:37,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 08:27:37,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 08:27:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:27:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 08:27:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 08:27:38,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-07-10 08:27:38,437 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:27:38,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:27:38,438 INFO L82 PathProgramCache]: Analyzing trace with hash 338323368, now seen corresponding path program 3 times [2021-07-10 08:27:38,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:27:38,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742128293] [2021-07-10 08:27:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:27:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:27:39,431 WARN L205 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 5516 DAG size of output: 13 [2021-07-10 08:27:39,459 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 08:27:39,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:27:39,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742128293] [2021-07-10 08:27:39,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742128293] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:39,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182999563] [2021-07-10 08:27:39,460 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 08:27:39,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-10 08:27:39,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 08:27:39,494 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 44 conjunts are in the unsatisfiable core [2021-07-10 08:27:39,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:27:40,003 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 20 [2021-07-10 08:27:40,091 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:27:40,092 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 08:27:40,723 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 08:27:40,725 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:27:40,725 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 08:27:40,725 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:3 [2021-07-10 08:27:40,732 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 08:27:40,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182999563] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:40,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:27:40,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-07-10 08:27:40,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187849352] [2021-07-10 08:27:40,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-07-10 08:27:40,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:27:40,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-07-10 08:27:40,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-07-10 08:27:40,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:40,734 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:27:40,734 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 08:27:40,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:40,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:40,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:40,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:40,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 08:27:40,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:27:40,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 08:27:40,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 08:27:40,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 08:27:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:27:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 08:27:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 08:27:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 08:27:41,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 08:27:41,247 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:27:41,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:27:41,247 INFO L82 PathProgramCache]: Analyzing trace with hash 911474058, now seen corresponding path program 4 times [2021-07-10 08:27:41,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:27:41,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765674449] [2021-07-10 08:27:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:27:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:27:43,926 WARN L205 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 7327 DAG size of output: 14 [2021-07-10 08:27:43,958 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 08:27:43,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:27:43,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765674449] [2021-07-10 08:27:43,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765674449] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:43,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773536349] [2021-07-10 08:27:43,958 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 08:27:43,998 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 08:27:43,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 08:27:43,999 WARN L261 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 48 conjunts are in the unsatisfiable core [2021-07-10 08:27:44,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:27:44,574 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 21 [2021-07-10 08:27:44,700 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-07-10 08:27:44,700 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:27:44,701 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 08:27:46,831 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 08:27:46,833 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 08:27:46,833 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 08:27:46,833 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:3 [2021-07-10 08:27:46,842 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 08:27:46,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773536349] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:46,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:27:46,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-07-10 08:27:46,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418567252] [2021-07-10 08:27:46,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-10 08:27:46,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:27:46,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-10 08:27:46,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2021-07-10 08:27:46,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:46,845 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:27:46,846 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 08:27:46,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:46,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:46,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:46,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:46,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 08:27:46,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:27:46,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 08:27:46,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 08:27:46,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 08:27:46,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:27:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:27:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 08:27:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 08:27:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 08:27:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 08:27:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:27:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 08:27:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 08:27:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 08:27:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 08:27:47,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2021-07-10 08:27:47,461 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:27:47,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:27:47,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1499276264, now seen corresponding path program 5 times [2021-07-10 08:27:47,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:27:47,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395373210] [2021-07-10 08:27:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:27:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:27:48,436 WARN L205 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 14 [2021-07-10 08:27:48,478 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 08:27:48,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:27:48,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395373210] [2021-07-10 08:27:48,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395373210] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:27:48,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840325613] [2021-07-10 08:27:48,479 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 08:27:48,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-10 08:27:48,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 08:27:48,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 40 conjunts are in the unsatisfiable core [2021-07-10 08:27:48,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown