/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-Persistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-14 09:43:53,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 09:43:53,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 09:43:53,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-14 09:43:53,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-14 09:43:53,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-14 09:43:53,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-14 09:43:53,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-14 09:43:53,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-14 09:43:53,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-14 09:43:53,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-14 09:43:53,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-14 09:43:53,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-14 09:43:53,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-14 09:43:53,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-14 09:43:53,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-14 09:43:53,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-14 09:43:53,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-14 09:43:53,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-14 09:43:53,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-14 09:43:53,109 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-Persistent-NoLbe.epf [2021-06-14 09:43:53,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 09:43:53,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 09:43:53,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 09:43:53,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 09:43:53,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 09:43:53,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 09:43:53,137 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 09:43:53,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 09:43:53,138 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 09:43:53,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 09:43:53,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 09:43:53,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 09:43:53,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 09:43:53,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 09:43:53,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 09:43:53,139 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 09:43:53,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 09:43:53,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 09:43:53,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 09:43:53,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 09:43:53,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 09:43:53,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 09:43:53,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 09:43:53,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 09:43:53,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 09:43:53,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 09:43:53,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 09:43:53,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 09:43:53,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 09:43:53,140 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 09:43:53,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 09:43:53,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 09:43:53,141 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-06-14 09:43:53,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 09:43:53,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 09:43:53,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 09:43:53,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 09:43:53,388 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 09:43:53,389 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 09:43:53,390 INFO L432 ainManager$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 [2021-06-14 09:43:53,390 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-5.wvr.bpl' [2021-06-14 09:43:53,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 09:43:53,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 09:43:53,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 09:43:53,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 09:43:53,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 09:43:53,428 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 14.06 09:43:53" (1/1) ... [2021-06-14 09:43:53,433 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 14.06 09:43:53" (1/1) ... [2021-06-14 09:43:53,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 09:43:53,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 09:43:53,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 09:43:53,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 09:43:53,443 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 14.06 09:43:53" (1/1) ... [2021-06-14 09:43:53,443 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 14.06 09:43:53" (1/1) ... [2021-06-14 09:43:53,444 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 14.06 09:43:53" (1/1) ... [2021-06-14 09:43:53,444 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 14.06 09:43:53" (1/1) ... [2021-06-14 09:43:53,446 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 14.06 09:43:53" (1/1) ... [2021-06-14 09:43:53,447 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 14.06 09:43:53" (1/1) ... [2021-06-14 09:43:53,447 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 14.06 09:43:53" (1/1) ... [2021-06-14 09:43:53,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 09:43:53,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 09:43:53,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 09:43:53,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 09:43:53,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:43:53" (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 [2021-06-14 09:43:53,493 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-14 09:43:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-14 09:43:53,493 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-14 09:43:53,493 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-14 09:43:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-14 09:43:53,493 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-14 09:43:53,494 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 09:43:53,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 09:43:53,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 09:43:53,494 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-14 09:43:53,862 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 09:43:53,862 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-06-14 09:43:53,864 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2021-06-14 09:43:53,866 INFO L202 PluginConnector]: Adding new model unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 09:43:53 BoogieIcfgContainer [2021-06-14 09:43:53,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 09:43:53,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 09:43:53,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 09:43:53,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 09:43:53,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:43:53" (1/2) ... [2021-06-14 09:43:53,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65622507 and model type unroll-cond-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 09:43:53, skipping insertion in model container [2021-06-14 09:43:53,879 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 14.06 09:43:53" (2/2) ... [2021-06-14 09:43:53,884 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.bpl [2021-06-14 09:43:53,887 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 09:43:53,888 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 09:43:53,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 09:43:53,889 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 09:43:53,919 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-14 09:43:53,935 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 [2021-06-14 09:43:54,017 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 09:43:54,018 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 09:43:54,018 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 09:43:54,018 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 09:43:54,021 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 09:43:54,021 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 09:43:54,021 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 09:43:54,021 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-14 09:43:54,058 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 09:43:54,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 09:43:54,062 INFO L82 PathProgramCache]: Analyzing trace with hash 51943413, now seen corresponding path program 1 times [2021-06-14 09:43:54,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 09:43:54,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692206673] [2021-06-14 09:43:54,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 09:43:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:43:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:43:54,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 09:43:54,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692206673] [2021-06-14 09:43:54,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692206673] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 09:43:54,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 09:43:54,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-14 09:43:54,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834958217] [2021-06-14 09:43:54,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-14 09:43:54,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 09:43:54,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-14 09:43:54,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-14 09:43:54,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:43:54,206 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 09:43:54,207 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) [2021-06-14 09:43:54,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:43:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:43:54,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-14 09:43:54,233 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 09:43:54,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 09:43:54,233 INFO L82 PathProgramCache]: Analyzing trace with hash 642064071, now seen corresponding path program 1 times [2021-06-14 09:43:54,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 09:43:54,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164398686] [2021-06-14 09:43:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 09:43:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:43:55,294 WARN L205 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 5498 DAG size of output: 50 [2021-06-14 09:43:55,414 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2021-06-14 09:43:56,136 WARN L205 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 5496 DAG size of output: 12 [2021-06-14 09:43:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:43:56,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 09:43:56,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164398686] [2021-06-14 09:43:56,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164398686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:43:56,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816042307] [2021-06-14 09:43:56,150 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 [2021-06-14 09:43:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:43:56,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-14 09:43:56,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 09:43:57,202 WARN L205 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 2125 DAG size of output: 13 [2021-06-14 09:43:57,220 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 [2021-06-14 09:43:57,222 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 09:43:57,223 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:43:57,224 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 09:43:57,224 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2021-06-14 09:43:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:43:57,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816042307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:43:57,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 09:43:57,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-06-14 09:43:57,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104013766] [2021-06-14 09:43:57,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-14 09:43:57,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 09:43:57,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-14 09:43:57,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-06-14 09:43:57,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:43:57,237 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 09:43:57,237 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) [2021-06-14 09:43:57,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:43:57,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:43:57,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:43:57,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:43:57,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 09:43:57,486 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 09:43:57,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 09:43:57,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1755935285, now seen corresponding path program 2 times [2021-06-14 09:43:57,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 09:43:57,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257779043] [2021-06-14 09:43:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 09:43:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:43:57,968 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 2846 DAG size of output: 46 [2021-06-14 09:43:58,818 WARN L205 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 5518 DAG size of output: 38 [2021-06-14 09:43:59,604 WARN L205 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 5516 DAG size of output: 13 [2021-06-14 09:43:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:43:59,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 09:43:59,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257779043] [2021-06-14 09:43:59,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257779043] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:43:59,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558241653] [2021-06-14 09:43:59,623 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 [2021-06-14 09:43:59,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 09:43:59,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 09:43:59,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-14 09:43:59,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 09:44:00,584 WARN L205 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 2125 DAG size of output: 15 [2021-06-14 09:44:00,597 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:00,597 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 [2021-06-14 09:44:00,608 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 09:44:00,609 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:00,612 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 09:44:00,612 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:3 [2021-06-14 09:44:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:00,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558241653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:00,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 09:44:00,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-06-14 09:44:00,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002978253] [2021-06-14 09:44:00,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-14 09:44:00,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 09:44:00,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-14 09:44:00,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-06-14 09:44:00,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:00,621 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 09:44:00,621 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) [2021-06-14 09:44:00,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:00,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:00,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:00,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 09:44:00,886 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 09:44:00,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 09:44:00,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1926204551, now seen corresponding path program 3 times [2021-06-14 09:44:00,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 09:44:00,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367760750] [2021-06-14 09:44:00,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 09:44:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:44:01,402 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 2845 DAG size of output: 42 [2021-06-14 09:44:02,224 WARN L205 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 25 [2021-06-14 09:44:03,011 WARN L205 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 5508 DAG size of output: 14 [2021-06-14 09:44:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:03,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 09:44:03,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367760750] [2021-06-14 09:44:03,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367760750] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:03,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726273966] [2021-06-14 09:44:03,041 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 [2021-06-14 09:44:03,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-14 09:44:03,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 09:44:03,065 WARN L261 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-14 09:44:03,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 09:44:03,991 WARN L205 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 2125 DAG size of output: 16 [2021-06-14 09:44:04,009 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:04,009 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 [2021-06-14 09:44:04,044 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 09:44:04,045 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:04,046 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 09:44:04,046 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:3 [2021-06-14 09:44:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:04,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726273966] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:04,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 09:44:04,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-14 09:44:04,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229406091] [2021-06-14 09:44:04,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-14 09:44:04,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 09:44:04,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-14 09:44:04,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-06-14 09:44:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:04,056 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 09:44:04,056 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) [2021-06-14 09:44:04,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:04,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:04,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:04,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:04,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 09:44:04,341 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 09:44:04,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 09:44:04,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1385382795, now seen corresponding path program 4 times [2021-06-14 09:44:04,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 09:44:04,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507860321] [2021-06-14 09:44:04,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 09:44:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:44:04,836 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 2844 DAG size of output: 41 [2021-06-14 09:44:05,633 WARN L205 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 14 [2021-06-14 09:44:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:05,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 09:44:05,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507860321] [2021-06-14 09:44:05,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507860321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:05,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798942135] [2021-06-14 09:44:05,658 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 [2021-06-14 09:44:05,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-14 09:44:05,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 09:44:05,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-14 09:44:05,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 09:44:08,921 WARN L205 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 5724 DAG size of output: 48 [2021-06-14 09:44:08,976 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:08,976 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 [2021-06-14 09:44:09,013 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 09:44:09,014 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:09,014 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 09:44:09,014 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:3 [2021-06-14 09:44:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:09,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798942135] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:09,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 09:44:09,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-14 09:44:09,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619702470] [2021-06-14 09:44:09,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-14 09:44:09,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 09:44:09,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-14 09:44:09,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-06-14 09:44:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:09,024 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 09:44:09,024 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) [2021-06-14 09:44:09,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:09,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:09,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:09,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:09,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:09,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-06-14 09:44:09,313 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 09:44:09,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 09:44:09,313 INFO L82 PathProgramCache]: Analyzing trace with hash -965375417, now seen corresponding path program 5 times [2021-06-14 09:44:09,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 09:44:09,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784981920] [2021-06-14 09:44:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 09:44:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:44:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:09,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 09:44:09,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784981920] [2021-06-14 09:44:09,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784981920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:09,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264414859] [2021-06-14 09:44:09,359 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 [2021-06-14 09:44:09,392 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-14 09:44:09,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 09:44:09,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-14 09:44:09,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 09:44:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:09,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264414859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:09,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 09:44:09,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-06-14 09:44:09,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051677495] [2021-06-14 09:44:09,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-14 09:44:09,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 09:44:09,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-14 09:44:09,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-14 09:44:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:09,429 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 09:44:09,429 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) [2021-06-14 09:44:09,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:09,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:09,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:09,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:09,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:09,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:09,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-14 09:44:09,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 09:44:09,684 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 09:44:09,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 09:44:09,684 INFO L82 PathProgramCache]: Analyzing trace with hash 829683594, now seen corresponding path program 1 times [2021-06-14 09:44:09,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 09:44:09,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316706356] [2021-06-14 09:44:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 09:44:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:44:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:09,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 09:44:09,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316706356] [2021-06-14 09:44:09,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316706356] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:09,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844836124] [2021-06-14 09:44:09,794 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 [2021-06-14 09:44:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:44:09,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-14 09:44:09,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 09:44:36,062 WARN L205 SmtUtils]: Spent 25.74 s on a formula simplification. DAG size of input: 51297 DAG size of output: 54 [2021-06-14 09:44:36,121 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:36,122 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 [2021-06-14 09:44:36,189 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 09:44:36,190 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:36,190 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 09:44:36,190 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:3 [2021-06-14 09:44:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:36,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844836124] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:36,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 09:44:36,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-14 09:44:36,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179082529] [2021-06-14 09:44:36,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-14 09:44:36,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 09:44:36,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-14 09:44:36,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-06-14 09:44:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:36,197 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 09:44:36,197 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) [2021-06-14 09:44:36,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:36,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:36,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:36,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:36,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:36,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-14 09:44:36,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-14 09:44:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 09:44:36,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-06-14 09:44:36,569 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 09:44:36,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 09:44:36,569 INFO L82 PathProgramCache]: Analyzing trace with hash 729848028, now seen corresponding path program 2 times [2021-06-14 09:44:36,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 09:44:36,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396658351] [2021-06-14 09:44:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 09:44:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:44:37,309 WARN L205 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 5496 DAG size of output: 12 [2021-06-14 09:44:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:37,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 09:44:37,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396658351] [2021-06-14 09:44:37,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396658351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:37,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318434530] [2021-06-14 09:44:37,332 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 [2021-06-14 09:44:37,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 09:44:37,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 09:44:37,357 WARN L261 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-14 09:44:37,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 09:44:37,765 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 19 [2021-06-14 09:44:37,815 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:37,815 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 [2021-06-14 09:44:38,024 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 09:44:38,026 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:38,026 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 09:44:38,026 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:3 [2021-06-14 09:44:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:38,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318434530] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:38,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 09:44:38,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-14 09:44:38,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909789889] [2021-06-14 09:44:38,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-14 09:44:38,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 09:44:38,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-14 09:44:38,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-06-14 09:44:38,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:38,033 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 09:44:38,033 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) [2021-06-14 09:44:38,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:38,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:38,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:38,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:38,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:38,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-14 09:44:38,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 09:44:38,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:38,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:38,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:38,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-14 09:44:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 09:44:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 09:44:38,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-06-14 09:44:38,349 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 09:44:38,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 09:44:38,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1929912778, now seen corresponding path program 3 times [2021-06-14 09:44:38,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 09:44:38,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176543249] [2021-06-14 09:44:38,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 09:44:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:44:39,216 WARN L205 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 5516 DAG size of output: 13 [2021-06-14 09:44:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:39,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 09:44:39,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176543249] [2021-06-14 09:44:39,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176543249] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:39,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308985409] [2021-06-14 09:44:39,240 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 [2021-06-14 09:44:39,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-14 09:44:39,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 09:44:39,268 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-14 09:44:39,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 09:44:39,689 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 20 [2021-06-14 09:44:39,759 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:39,759 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 [2021-06-14 09:44:40,217 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 09:44:40,218 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:40,219 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 09:44:40,219 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:3 [2021-06-14 09:44:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:40,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308985409] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:40,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 09:44:40,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-06-14 09:44:40,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927886869] [2021-06-14 09:44:40,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-14 09:44:40,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 09:44:40,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-14 09:44:40,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-06-14 09:44:40,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:40,225 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 09:44:40,225 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) [2021-06-14 09:44:40,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:40,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:40,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:40,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:40,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:40,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-14 09:44:40,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 09:44:40,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 09:44:40,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-14 09:44:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 09:44:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 09:44:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-14 09:44:40,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 09:44:40,598 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 09:44:40,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 09:44:40,598 INFO L82 PathProgramCache]: Analyzing trace with hash 477214364, now seen corresponding path program 4 times [2021-06-14 09:44:40,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 09:44:40,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951928673] [2021-06-14 09:44:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 09:44:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:44:41,473 WARN L205 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 5508 DAG size of output: 14 [2021-06-14 09:44:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:41,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 09:44:41,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951928673] [2021-06-14 09:44:41,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951928673] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:41,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479168570] [2021-06-14 09:44:41,501 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 [2021-06-14 09:44:41,527 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-14 09:44:41,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 09:44:41,528 WARN L261 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-14 09:44:41,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 09:44:41,977 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 21 [2021-06-14 09:44:42,087 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-14 09:44:42,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:42,087 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 [2021-06-14 09:44:43,687 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 09:44:43,688 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 09:44:43,689 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 09:44:43,689 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:3 [2021-06-14 09:44:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:43,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479168570] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:43,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 09:44:43,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-06-14 09:44:43,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8956201] [2021-06-14 09:44:43,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-14 09:44:43,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 09:44:43,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-14 09:44:43,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2021-06-14 09:44:43,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:43,695 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 09:44:43,695 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) [2021-06-14 09:44:43,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:43,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:43,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:43,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:43,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:43,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-14 09:44:43,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 09:44:43,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-14 09:44:43,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-14 09:44:43,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 09:44:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 09:44:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 09:44:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 09:44:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 09:44:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-14 09:44:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 09:44:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-14 09:44:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-14 09:44:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 09:44:44,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2021-06-14 09:44:44,073 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 09:44:44,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 09:44:44,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1606763510, now seen corresponding path program 5 times [2021-06-14 09:44:44,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 09:44:44,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993456063] [2021-06-14 09:44:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 09:44:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 09:44:44,961 WARN L205 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 5510 DAG size of output: 14 [2021-06-14 09:44:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 09:44:44,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 09:44:44,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993456063] [2021-06-14 09:44:44,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993456063] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 09:44:44,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793118832] [2021-06-14 09:44:44,984 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 [2021-06-14 09:44:45,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-14 09:44:45,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 09:44:45,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-14 09:44:45,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown