/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-NewStatesSleep-NoLbe-Symm.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 20:30:30,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 20:30:30,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 20:30:30,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-16 20:30:30,989 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-NewStatesSleep-NoLbe-Symm.epf [2021-06-16 20:30:31,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 20:30:31,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 20:30:31,022 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-16 20:30:31,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-16 20:30:31,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 20:30:31,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 20:30:31,025 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 20:30:31,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 20:30:31,026 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 20:30:31,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 20:30:31,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 20:30:31,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 20:30:31,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 20:30:31,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 20:30:31,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 20:30:31,028 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 20:30:31,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 20:30:31,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 20:30:31,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 20:30:31,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 20:30:31,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 20:30:31,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 20:30:31,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 20:30:31,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 20:30:31,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 20:30:31,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 20:30:31,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 20:30:31,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 20:30:31,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 20:30:31,030 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 20:30:31,030 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-16 20:30:31,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 20:30:31,030 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-16 20:30:31,030 INFO L138 SettingsManager]: * Limit POR to symmetric independence in concurrent analysis=true [2021-06-16 20:30:31,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 20:30:31,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 20:30:31,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 20:30:31,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 20:30:31,317 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 20:30:31,324 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 20:30:31,325 INFO L432 ainManager$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 [2021-06-16 20:30:31,325 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl' [2021-06-16 20:30:31,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 20:30:31,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 20:30:31,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 20:30:31,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 20:30:31,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 20:30:31,377 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 16.06 08:30:31" (1/1) ... [2021-06-16 20:30:31,383 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 16.06 08:30:31" (1/1) ... [2021-06-16 20:30:31,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 20:30:31,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 20:30:31,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 20:30:31,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 20:30:31,396 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 16.06 08:30:31" (1/1) ... [2021-06-16 20:30:31,397 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 16.06 08:30:31" (1/1) ... [2021-06-16 20:30:31,405 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 16.06 08:30:31" (1/1) ... [2021-06-16 20:30:31,405 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 16.06 08:30:31" (1/1) ... [2021-06-16 20:30:31,411 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 16.06 08:30:31" (1/1) ... [2021-06-16 20:30:31,413 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 16.06 08:30:31" (1/1) ... [2021-06-16 20:30:31,414 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 16.06 08:30:31" (1/1) ... [2021-06-16 20:30:31,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 20:30:31,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 20:30:31,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 20:30:31,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 20:30:31,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:30:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 20:30:31,495 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-16 20:30:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 20:30:31,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 20:30:31,495 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-16 20:30:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 20:30:31,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 20:30:31,496 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 20:30:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 20:30:31,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 20:30:31,498 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 20:30:31,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 20:30:31,842 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-06-16 20:30:31,843 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2021-06-16 20:30:31,844 INFO L202 PluginConnector]: Adding new model unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 08:30:31 BoogieIcfgContainer [2021-06-16 20:30:31,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 20:30:31,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 20:30:31,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 20:30:31,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 20:30:31,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:30:31" (1/2) ... [2021-06-16 20:30:31,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eaffc24 and model type unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 08:30:31, skipping insertion in model container [2021-06-16 20:30:31,849 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 16.06 08:30:31" (2/2) ... [2021-06-16 20:30:31,850 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.bpl [2021-06-16 20:30:31,853 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 20:30:31,853 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 20:30:31,853 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 20:30:31,854 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 20:30:31,893 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-16 20:30:31,913 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 [2021-06-16 20:30:31,978 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 20:30:31,978 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 20:30:31,978 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 20:30:31,978 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 20:30:31,979 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 20:30:31,979 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 20:30:31,979 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 20:30:31,979 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 20:30:32,009 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:30:32,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:30:32,013 INFO L82 PathProgramCache]: Analyzing trace with hash 47474763, now seen corresponding path program 1 times [2021-06-16 20:30:32,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:30:32,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298190027] [2021-06-16 20:30:32,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:30:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:30:32,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:30:32,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:30:32,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298190027] [2021-06-16 20:30:32,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298190027] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 20:30:32,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 20:30:32,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 20:30:32,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387451056] [2021-06-16 20:30:32,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-16 20:30:32,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:30:32,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-16 20:30:32,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-16 20:30:32,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:30:32,248 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:30:32,249 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) [2021-06-16 20:30:32,249 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:30:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:30:32,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 20:30:32,291 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:30:32,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:30:32,293 INFO L82 PathProgramCache]: Analyzing trace with hash 637595421, now seen corresponding path program 1 times [2021-06-16 20:30:32,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:30:32,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616601683] [2021-06-16 20:30:32,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:30:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:30:33,573 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 5498 DAG size of output: 50 [2021-06-16 20:30:33,715 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2021-06-16 20:30:34,423 WARN L205 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 5496 DAG size of output: 12 [2021-06-16 20:30:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:30:34,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:30:34,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616601683] [2021-06-16 20:30:34,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616601683] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:30:34,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202754172] [2021-06-16 20:30:34,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:30:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:30:34,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-16 20:30:34,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:30:35,826 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 2125 DAG size of output: 13 [2021-06-16 20:30:35,848 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 [2021-06-16 20:30:35,850 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 20:30:35,851 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:30:35,852 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 20:30:35,852 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2021-06-16 20:30:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:30:35,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202754172] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:30:35,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:30:35,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-06-16 20:30:35,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701083793] [2021-06-16 20:30:35,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 20:30:35,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:30:35,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 20:30:35,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-06-16 20:30:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:30:35,862 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:30:35,862 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) [2021-06-16 20:30:35,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:30:35,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:30:35,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:30:35,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:30:36,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:30:36,112 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:30:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:30:36,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1751466635, now seen corresponding path program 2 times [2021-06-16 20:30:36,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:30:36,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059321836] [2021-06-16 20:30:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:30:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:30:36,736 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 2846 DAG size of output: 46 [2021-06-16 20:30:36,848 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2021-06-16 20:30:37,802 WARN L205 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 5518 DAG size of output: 38 [2021-06-16 20:30:38,747 WARN L205 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 5516 DAG size of output: 13 [2021-06-16 20:30:38,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:30:38,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:30:38,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059321836] [2021-06-16 20:30:38,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059321836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:30:38,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8184261] [2021-06-16 20:30:38,784 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 [2021-06-16 20:30:38,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-16 20:30:38,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:30:38,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-16 20:30:38,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:30:39,775 WARN L205 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 2125 DAG size of output: 15 [2021-06-16 20:30:39,791 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:30:39,791 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 [2021-06-16 20:30:39,795 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 20:30:39,796 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:30:39,797 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 20:30:39,797 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:3 [2021-06-16 20:30:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:30:39,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8184261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:30:39,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:30:39,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-06-16 20:30:39,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696852202] [2021-06-16 20:30:39,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-16 20:30:39,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:30:39,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-16 20:30:39,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-06-16 20:30:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:30:39,805 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:30:39,805 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) [2021-06-16 20:30:39,805 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:30:39,805 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:30:39,805 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:30:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:30:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:30:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:30:40,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:30:40,064 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:30:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:30:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1921735901, now seen corresponding path program 3 times [2021-06-16 20:30:40,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:30:40,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344989145] [2021-06-16 20:30:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:30:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:30:40,631 WARN L205 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 2845 DAG size of output: 42 [2021-06-16 20:30:41,523 WARN L205 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 25 [2021-06-16 20:30:42,447 WARN L205 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 5508 DAG size of output: 14 [2021-06-16 20:30:42,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:30:42,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:30:42,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344989145] [2021-06-16 20:30:42,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344989145] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:30:42,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109087359] [2021-06-16 20:30:42,470 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 [2021-06-16 20:30:42,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-16 20:30:42,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:30:42,497 WARN L261 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-16 20:30:42,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:30:43,523 WARN L205 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 2125 DAG size of output: 16 [2021-06-16 20:30:43,550 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:30:43,550 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 [2021-06-16 20:30:43,566 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 20:30:43,567 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:30:43,568 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 20:30:43,568 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:3 [2021-06-16 20:30:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:30:43,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109087359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:30:43,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:30:43,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-16 20:30:43,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013086771] [2021-06-16 20:30:43,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-16 20:30:43,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:30:43,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-16 20:30:43,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-06-16 20:30:43,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:30:43,575 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:30:43,575 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) [2021-06-16 20:30:43,575 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:30:43,575 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:30:43,575 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:30:43,575 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:30:43,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:30:43,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:30:43,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:30:43,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:30:43,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:30:43,837 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:30:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:30:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1389851445, now seen corresponding path program 4 times [2021-06-16 20:30:43,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:30:43,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278553588] [2021-06-16 20:30:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:30:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:30:44,388 WARN L205 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 2844 DAG size of output: 41 [2021-06-16 20:30:45,320 WARN L205 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 14 [2021-06-16 20:30:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:30:45,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:30:45,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278553588] [2021-06-16 20:30:45,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278553588] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:30:45,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560757593] [2021-06-16 20:30:45,343 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 [2021-06-16 20:30:45,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-16 20:30:45,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:30:45,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-16 20:30:45,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:30:49,518 WARN L205 SmtUtils]: Spent 3.98 s on a formula simplification. DAG size of input: 5724 DAG size of output: 48 [2021-06-16 20:30:49,606 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:30:49,606 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 [2021-06-16 20:30:49,671 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 20:30:49,681 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:30:49,682 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 20:30:49,682 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:3 [2021-06-16 20:30:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:30:49,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560757593] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:30:49,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:30:49,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-16 20:30:49,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502415252] [2021-06-16 20:30:49,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-16 20:30:49,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:30:49,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-16 20:30:49,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-06-16 20:30:49,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:30:49,690 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:30:49,690 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) [2021-06-16 20:30:49,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:30:49,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:30:49,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:30:49,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:30:49,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:30:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:30:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:30:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:30:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:30:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:30:49,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-06-16 20:30:49,995 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:30:49,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:30:49,996 INFO L82 PathProgramCache]: Analyzing trace with hash -969844067, now seen corresponding path program 5 times [2021-06-16 20:30:49,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:30:49,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073644380] [2021-06-16 20:30:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:30:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:30:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:30:50,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:30:50,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073644380] [2021-06-16 20:30:50,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073644380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:30:50,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690986356] [2021-06-16 20:30:50,049 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 [2021-06-16 20:30:50,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-16 20:30:50,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:30:50,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-16 20:30:50,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:30:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:30:50,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690986356] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:30:50,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:30:50,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-06-16 20:30:50,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736794605] [2021-06-16 20:30:50,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 20:30:50,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:30:50,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 20:30:50,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-16 20:30:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:30:50,110 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:30:50,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 20:30:50,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:30:50,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:30:50,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:30:50,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:30:50,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:30:50,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:30:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:30:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:30:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:30:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:30:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:30:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:30:50,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:30:50,349 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:30:50,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:30:50,349 INFO L82 PathProgramCache]: Analyzing trace with hash 825214944, now seen corresponding path program 1 times [2021-06-16 20:30:50,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:30:50,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744458210] [2021-06-16 20:30:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:30:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:30:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:30:50,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:30:50,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744458210] [2021-06-16 20:30:50,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744458210] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:30:50,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665230919] [2021-06-16 20:30:50,461 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 [2021-06-16 20:30:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:30:50,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-16 20:30:50,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:31:19,619 WARN L205 SmtUtils]: Spent 28.43 s on a formula simplification. DAG size of input: 51297 DAG size of output: 54 [2021-06-16 20:31:19,669 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:31:19,670 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 [2021-06-16 20:31:19,761 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 20:31:19,762 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:31:19,762 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 20:31:19,762 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:3 [2021-06-16 20:31:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:19,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665230919] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:19,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:31:19,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-16 20:31:19,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681824150] [2021-06-16 20:31:19,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-16 20:31:19,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:31:19,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-16 20:31:19,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-06-16 20:31:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:19,768 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:31:19,769 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) [2021-06-16 20:31:19,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:31:19,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:19,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:31:19,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:19,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:19,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:31:19,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:31:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:31:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:19,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:19,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:31:19,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 20:31:20,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-06-16 20:31:20,093 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:31:20,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:31:20,093 INFO L82 PathProgramCache]: Analyzing trace with hash 725379378, now seen corresponding path program 2 times [2021-06-16 20:31:20,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:31:20,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814552387] [2021-06-16 20:31:20,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:31:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:31:20,890 WARN L205 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 5496 DAG size of output: 12 [2021-06-16 20:31:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:20,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:31:20,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814552387] [2021-06-16 20:31:20,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814552387] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:20,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011385153] [2021-06-16 20:31:20,912 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 [2021-06-16 20:31:20,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-16 20:31:20,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:31:20,939 WARN L261 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-16 20:31:20,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:31:21,367 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 19 [2021-06-16 20:31:21,413 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:31:21,414 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 [2021-06-16 20:31:21,629 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 20:31:21,630 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:31:21,630 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 20:31:21,630 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:3 [2021-06-16 20:31:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:21,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011385153] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:21,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:31:21,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-16 20:31:21,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596995714] [2021-06-16 20:31:21,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-16 20:31:21,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:31:21,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-16 20:31:21,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-06-16 20:31:21,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:21,636 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:31:21,636 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) [2021-06-16 20:31:21,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:31:21,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:21,637 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:31:21,637 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:21,637 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:21,637 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:31:21,637 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-16 20:31:21,637 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:31:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:31:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:31:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 20:31:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 20:31:21,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-06-16 20:31:21,983 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:31:21,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:31:21,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1925444128, now seen corresponding path program 3 times [2021-06-16 20:31:21,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:31:21,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074217116] [2021-06-16 20:31:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:31:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:31:22,954 WARN L205 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 5516 DAG size of output: 13 [2021-06-16 20:31:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:22,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:31:22,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074217116] [2021-06-16 20:31:22,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074217116] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:22,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336494932] [2021-06-16 20:31:22,978 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 [2021-06-16 20:31:23,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-16 20:31:23,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:31:23,010 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-16 20:31:23,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:31:23,484 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 20 [2021-06-16 20:31:23,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:31:23,553 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 [2021-06-16 20:31:24,056 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 20:31:24,058 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:31:24,058 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 20:31:24,058 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:3 [2021-06-16 20:31:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:24,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336494932] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:24,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:31:24,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-06-16 20:31:24,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398802010] [2021-06-16 20:31:24,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-16 20:31:24,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:31:24,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-16 20:31:24,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-06-16 20:31:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:24,064 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:31:24,064 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) [2021-06-16 20:31:24,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:31:24,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:24,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:31:24,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:24,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:24,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:31:24,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-16 20:31:24,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-16 20:31:24,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:24,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:31:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:31:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:31:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 20:31:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 20:31:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 20:31:24,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:31:24,441 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:31:24,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:31:24,442 INFO L82 PathProgramCache]: Analyzing trace with hash 472745714, now seen corresponding path program 4 times [2021-06-16 20:31:24,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:31:24,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489949555] [2021-06-16 20:31:24,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:31:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:31:25,553 WARN L205 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 5508 DAG size of output: 14 [2021-06-16 20:31:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:25,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:31:25,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489949555] [2021-06-16 20:31:25,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489949555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:25,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225444023] [2021-06-16 20:31:25,580 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 [2021-06-16 20:31:25,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-16 20:31:25,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:31:25,621 WARN L261 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-16 20:31:25,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:31:26,101 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 21 [2021-06-16 20:31:26,209 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:31:26,209 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 [2021-06-16 20:31:27,909 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 20:31:27,910 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 20:31:27,910 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 20:31:27,910 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:3 [2021-06-16 20:31:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:27,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225444023] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:27,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:31:27,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-06-16 20:31:27,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314553769] [2021-06-16 20:31:27,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-16 20:31:27,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:31:27,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-16 20:31:27,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2021-06-16 20:31:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:27,919 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:31:27,920 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) [2021-06-16 20:31:27,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:31:27,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:27,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:31:27,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:27,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:27,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:31:27,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-16 20:31:27,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-16 20:31:27,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-16 20:31:27,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:31:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 20:31:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 20:31:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 20:31:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 20:31:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:31:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 20:31:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 20:31:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 20:31:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 20:31:28,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2021-06-16 20:31:28,285 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:31:28,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:31:28,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1611232160, now seen corresponding path program 5 times [2021-06-16 20:31:28,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:31:28,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503249817] [2021-06-16 20:31:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:31:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:31:29,219 WARN L205 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 14 [2021-06-16 20:31:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:31:29,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:31:29,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503249817] [2021-06-16 20:31:29,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503249817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:31:29,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128332769] [2021-06-16 20:31:29,242 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 [2021-06-16 20:31:29,268 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-16 20:31:29,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:31:29,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-16 20:31:29,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown