/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-17 07:17:52,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-17 07:17:52,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-17 07:17:52,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-17 07:17:52,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-17 07:17:52,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-17 07:17:52,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-17 07:17:52,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-17 07:17:52,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-17 07:17:52,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-17 07:17:52,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-17 07:17:52,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-17 07:17:52,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-17 07:17:52,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-17 07:17:52,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-17 07:17:52,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-17 07:17:52,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-17 07:17:52,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-17 07:17:52,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-17 07:17:52,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-17 07:17:52,942 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe.epf [2021-06-17 07:17:52,970 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-17 07:17:52,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-17 07:17:52,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-17 07:17:52,971 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-17 07:17:52,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-17 07:17:52,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-17 07:17:52,972 INFO L138 SettingsManager]: * Use SBE=true [2021-06-17 07:17:52,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-17 07:17:52,972 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-17 07:17:52,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-17 07:17:52,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-17 07:17:52,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-17 07:17:52,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-17 07:17:52,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-17 07:17:52,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-17 07:17:52,972 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-17 07:17:52,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-17 07:17:52,973 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-17 07:17:52,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-17 07:17:52,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-17 07:17:52,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-17 07:17:52,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-17 07:17:52,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-17 07:17:52,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 07:17:52,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-17 07:17:52,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-17 07:17:52,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-17 07:17:52,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-17 07:17:52,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-17 07:17:52,974 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-17 07:17:52,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-17 07:17:52,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-17 07:17:52,974 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-17 07:17:52,974 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-17 07:17:53,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-17 07:17:53,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-17 07:17:53,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-17 07:17:53,225 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-17 07:17:53,226 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-17 07:17:53,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl [2021-06-17 07:17:53,227 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl' [2021-06-17 07:17:53,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-17 07:17:53,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-17 07:17:53,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-17 07:17:53,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-17 07:17:53,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-17 07:17:53,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 07:17:53" (1/1) ... [2021-06-17 07:17:53,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 07:17:53" (1/1) ... [2021-06-17 07:17:53,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-17 07:17:53,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-17 07:17:53,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-17 07:17:53,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-17 07:17:53,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 07:17:53" (1/1) ... [2021-06-17 07:17:53,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 07:17:53" (1/1) ... [2021-06-17 07:17:53,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 07:17:53" (1/1) ... [2021-06-17 07:17:53,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 07:17:53" (1/1) ... [2021-06-17 07:17:53,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 07:17:53" (1/1) ... [2021-06-17 07:17:53,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 07:17:53" (1/1) ... [2021-06-17 07:17:53,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 07:17:53" (1/1) ... [2021-06-17 07:17:53,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-17 07:17:53,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-17 07:17:53,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-17 07:17:53,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-17 07:17:53,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 07:17:53" (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 [2021-06-17 07:17:53,366 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-17 07:17:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-17 07:17:53,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-17 07:17:53,367 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-17 07:17:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-17 07:17:53,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-17 07:17:53,367 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-17 07:17:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-17 07:17:53,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-17 07:17:53,367 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-17 07:17:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-17 07:17:53,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-17 07:17:53,368 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-17 07:17:53,571 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-17 07:17:53,571 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-17 07:17:53,573 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 07:17:53 BoogieIcfgContainer [2021-06-17 07:17:53,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-17 07:17:53,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-17 07:17:53,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-17 07:17:53,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-17 07:17:53,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 07:17:53" (1/2) ... [2021-06-17 07:17:53,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70640fcf and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.06 07:17:53, skipping insertion in model container [2021-06-17 07:17:53,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 07:17:53" (2/2) ... [2021-06-17 07:17:53,578 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-06-17 07:17:53,582 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-17 07:17:53,582 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-17 07:17:53,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-17 07:17:53,583 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-17 07:17:53,646 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-17 07:17:53,674 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-17 07:17:53,714 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 07:17:53,715 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 07:17:53,715 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 07:17:53,715 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 07:17:53,715 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 07:17:53,715 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 07:17:53,715 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 07:17:53,715 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-17 07:17:53,899 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 07:17:53,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 07:17:53,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1421528455, now seen corresponding path program 1 times [2021-06-17 07:17:53,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 07:17:53,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416134470] [2021-06-17 07:17:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 07:17:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:17:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:17:54,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 07:17:54,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416134470] [2021-06-17 07:17:54,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416134470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 07:17:54,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 07:17:54,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-17 07:17:54,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486639536] [2021-06-17 07:17:54,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-17 07:17:54,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 07:17:54,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-17 07:17:54,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-17 07:17:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:17:54,157 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 07:17:54,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 07:17:54,160 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:17:54,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:17:54,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-17 07:17:54,196 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 07:17:54,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 07:17:54,197 INFO L82 PathProgramCache]: Analyzing trace with hash 690038743, now seen corresponding path program 1 times [2021-06-17 07:17:54,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 07:17:54,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260129249] [2021-06-17 07:17:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 07:17:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:17:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-17 07:17:54,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 07:17:54,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260129249] [2021-06-17 07:17:54,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260129249] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 07:17:54,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 07:17:54,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-17 07:17:54,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189709769] [2021-06-17 07:17:54,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-17 07:17:54,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 07:17:54,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-17 07:17:54,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-17 07:17:54,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:17:54,235 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 07:17:54,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-06-17 07:17:54,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:17:54,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:17:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:17:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:17:54,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-17 07:17:54,269 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 07:17:54,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 07:17:54,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2139358133, now seen corresponding path program 1 times [2021-06-17 07:17:54,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 07:17:54,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383198057] [2021-06-17 07:17:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 07:17:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:17:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:17:54,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 07:17:54,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383198057] [2021-06-17 07:17:54,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383198057] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:17:54,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740972309] [2021-06-17 07:17:54,499 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 [2021-06-17 07:17:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:17:54,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-17 07:17:54,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 07:17:54,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 07:17:54,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-06-17 07:17:54,819 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-17 07:17:54,824 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:17:54,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 07:17:54,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-06-17 07:17:54,831 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-17 07:17:54,837 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:17:54,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-06-17 07:17:54,841 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-17 07:17:54,846 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:17:54,849 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-17 07:17:54,849 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2021-06-17 07:17:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:17:54,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740972309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:17:54,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 07:17:54,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-17 07:17:54,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171960559] [2021-06-17 07:17:54,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-17 07:17:54,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 07:17:54,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-17 07:17:54,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-17 07:17:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:17:54,891 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 07:17:54,891 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 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) [2021-06-17 07:17:54,891 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:17:54,892 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:17:54,892 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:17:55,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:17:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:17:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:17:55,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 07:17:55,229 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 07:17:55,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 07:17:55,230 INFO L82 PathProgramCache]: Analyzing trace with hash 428481043, now seen corresponding path program 2 times [2021-06-17 07:17:55,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 07:17:55,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322015951] [2021-06-17 07:17:55,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 07:17:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:17:55,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:17:55,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 07:17:55,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322015951] [2021-06-17 07:17:55,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322015951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:17:55,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969331411] [2021-06-17 07:17:55,301 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 [2021-06-17 07:17:55,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-17 07:17:55,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 07:17:55,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-17 07:17:55,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 07:17:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:17:55,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969331411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:17:55,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 07:17:55,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-17 07:17:55,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652428584] [2021-06-17 07:17:55,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-17 07:17:55,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 07:17:55,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-17 07:17:55,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-17 07:17:55,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:17:55,454 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 07:17:55,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 07:17:55,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:17:55,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:17:55,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:17:55,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:17:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:17:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:17:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:17:55,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:17:55,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 07:17:55,825 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 07:17:55,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 07:17:55,825 INFO L82 PathProgramCache]: Analyzing trace with hash -59020201, now seen corresponding path program 1 times [2021-06-17 07:17:55,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 07:17:55,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145744763] [2021-06-17 07:17:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 07:17:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:17:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-17 07:17:55,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 07:17:55,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145744763] [2021-06-17 07:17:55,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145744763] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:17:55,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197132782] [2021-06-17 07:17:55,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 07:17:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:17:55,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-17 07:17:55,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 07:17:56,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-17 07:17:56,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197132782] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:17:56,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 07:17:56,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-17 07:17:56,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340331529] [2021-06-17 07:17:56,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-17 07:17:56,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 07:17:56,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-17 07:17:56,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-17 07:17:56,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:17:56,047 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 07:17:56,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) [2021-06-17 07:17:56,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:17:56,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:17:56,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:17:56,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:17:56,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:17:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:17:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:17:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:17:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:17:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-17 07:17:56,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 07:17:56,376 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 07:17:56,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 07:17:56,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1348287435, now seen corresponding path program 2 times [2021-06-17 07:17:56,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 07:17:56,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275384806] [2021-06-17 07:17:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 07:17:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:17:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:17:56,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 07:17:56,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275384806] [2021-06-17 07:17:56,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275384806] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:17:56,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598629407] [2021-06-17 07:17:56,663 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 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 [2021-06-17 07:17:56,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-17 07:17:56,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 07:17:56,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-17 07:17:56,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 07:17:57,244 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:17:57,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 73 [2021-06-17 07:17:57,465 INFO L550 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-17 07:17:57,487 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:17:57,508 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:17:57,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 61 [2021-06-17 07:17:57,686 INFO L550 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-17 07:17:57,724 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:17:57,766 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:17:57,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 85 [2021-06-17 07:17:57,946 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-06-17 07:17:58,353 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 103 [2021-06-17 07:17:58,354 INFO L628 ElimStorePlain]: treesize reduction 322, result has 68.1 percent of original size [2021-06-17 07:17:58,881 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-17 07:17:58,881 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:77, output treesize:228 [2021-06-17 07:17:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:17:58,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598629407] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:17:58,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 07:17:58,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 25 [2021-06-17 07:17:58,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022267497] [2021-06-17 07:17:58,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-17 07:17:58,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 07:17:58,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-17 07:17:58,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-06-17 07:17:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:17:58,955 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 07:17:58,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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) [2021-06-17 07:17:58,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:17:58,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:17:58,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:17:58,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:17:58,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-17 07:17:58,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:17:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:17:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:17:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:17:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:17:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-17 07:17:59,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 07:18:00,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-17 07:18:00,061 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 07:18:00,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 07:18:00,061 INFO L82 PathProgramCache]: Analyzing trace with hash 911449235, now seen corresponding path program 3 times [2021-06-17 07:18:00,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 07:18:00,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069131872] [2021-06-17 07:18:00,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 07:18:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:18:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:18:00,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 07:18:00,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069131872] [2021-06-17 07:18:00,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069131872] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:18:00,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040893067] [2021-06-17 07:18:00,145 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 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 [2021-06-17 07:18:00,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-17 07:18:00,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 07:18:00,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-17 07:18:00,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 07:18:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:18:00,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040893067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:18:00,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 07:18:00,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-06-17 07:18:00,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768614902] [2021-06-17 07:18:00,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-17 07:18:00,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 07:18:00,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-17 07:18:00,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-17 07:18:00,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:18:00,355 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 07:18:00,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 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) [2021-06-17 07:18:00,355 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:18:00,355 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:18:00,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:18:00,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:18:00,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-17 07:18:00,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 07:18:00,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:18:00,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:18:00,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:18:00,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:18:00,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:18:00,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-17 07:18:00,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 07:18:00,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 07:18:00,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 07:18:00,841 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 07:18:00,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 07:18:00,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1145065769, now seen corresponding path program 4 times [2021-06-17 07:18:00,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 07:18:00,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436013126] [2021-06-17 07:18:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 07:18:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:18:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-17 07:18:00,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 07:18:00,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436013126] [2021-06-17 07:18:00,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436013126] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:18:00,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554381763] [2021-06-17 07:18:00,906 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 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 [2021-06-17 07:18:00,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-17 07:18:00,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 07:18:00,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-17 07:18:00,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 07:18:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-17 07:18:01,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554381763] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:18:01,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 07:18:01,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-06-17 07:18:01,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656396110] [2021-06-17 07:18:01,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-17 07:18:01,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 07:18:01,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-17 07:18:01,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-06-17 07:18:01,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:18:01,114 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 07:18:01,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 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) [2021-06-17 07:18:01,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:18:01,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:18:01,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:18:01,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:18:01,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-17 07:18:01,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 07:18:01,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-17 07:18:01,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:18:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:18:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:18:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:18:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:18:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-17 07:18:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 07:18:01,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 07:18:01,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-17 07:18:01,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-06-17 07:18:01,517 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 07:18:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 07:18:01,517 INFO L82 PathProgramCache]: Analyzing trace with hash 754469045, now seen corresponding path program 5 times [2021-06-17 07:18:01,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 07:18:01,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867024324] [2021-06-17 07:18:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 07:18:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:18:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:18:02,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 07:18:02,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867024324] [2021-06-17 07:18:02,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867024324] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:18:02,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27554672] [2021-06-17 07:18:02,057 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 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 [2021-06-17 07:18:02,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-17 07:18:02,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 07:18:02,104 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-17 07:18:02,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 07:18:10,954 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-17 07:18:11,332 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-06-17 07:18:11,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 07:18:11,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:18:11,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:18:11,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:18:11,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:18:11,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 77 [2021-06-17 07:18:11,458 INFO L550 ElimStorePlain]: Start of recursive call 2: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-17 07:18:11,469 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:18:11,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 07:18:11,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:18:11,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:18:11,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:18:11,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:18:11,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 57 [2021-06-17 07:18:11,479 INFO L550 ElimStorePlain]: Start of recursive call 3: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-17 07:18:11,488 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:18:11,546 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:18:11,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 137 [2021-06-17 07:18:12,203 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 197 [2021-06-17 07:18:12,569 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 240 [2021-06-17 07:18:13,676 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-06-17 07:18:14,746 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-06-17 07:18:15,733 WARN L205 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 295 [2021-06-17 07:18:16,134 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-17 07:18:16,619 WARN L205 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-06-17 07:18:16,963 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-06-17 07:18:17,127 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-17 07:18:17,282 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-17 07:18:18,050 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-17 07:18:18,436 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-17 07:18:18,819 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-17 07:18:19,502 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-06-17 07:18:19,736 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2021-06-17 07:18:20,821 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-17 07:18:21,889 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 313 DAG size of output: 293 [2021-06-17 07:18:22,923 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-17 07:18:24,082 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-06-17 07:18:25,170 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 286 DAG size of output: 288 [2021-06-17 07:18:26,125 WARN L205 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-17 07:18:26,712 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2021-06-17 07:18:26,949 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 147 [2021-06-17 07:18:27,343 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-17 07:18:27,821 WARN L205 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-06-17 07:18:28,102 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-06-17 07:18:28,236 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-17 07:18:28,378 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-17 07:18:29,142 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-17 07:18:29,527 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-17 07:18:29,938 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-17 07:18:30,981 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-17 07:18:32,006 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-17 07:18:33,036 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-17 07:18:34,189 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-06-17 07:18:34,195 INFO L550 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-17 07:18:36,589 WARN L205 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 290 DAG size of output: 248 [2021-06-17 07:18:36,590 INFO L628 ElimStorePlain]: treesize reduction 15036, result has 42.6 percent of original size [2021-06-17 07:18:37,006 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 249 [2021-06-17 07:18:37,356 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 236 [2021-06-17 07:18:38,124 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 188 [2021-06-17 07:18:38,618 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-17 07:18:38,618 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:106, output treesize:3 [2021-06-17 07:18:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:18:38,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27554672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:18:38,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 07:18:38,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2021-06-17 07:18:38,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431309433] [2021-06-17 07:18:38,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-17 07:18:38,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 07:18:38,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-17 07:18:38,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=740, Unknown=5, NotChecked=0, Total=870 [2021-06-17 07:18:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:18:38,641 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 07:18:38,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 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) [2021-06-17 07:18:38,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:18:38,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:18:38,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:18:38,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:18:38,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-17 07:18:38,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 07:18:38,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-17 07:18:38,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-17 07:18:38,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:19:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:19:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:19:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:19:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:19:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-17 07:19:38,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 07:19:38,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 07:19:38,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-17 07:19:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-17 07:19:38,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-06-17 07:19:38,931 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 07:19:38,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 07:19:38,932 INFO L82 PathProgramCache]: Analyzing trace with hash -127394481, now seen corresponding path program 6 times [2021-06-17 07:19:38,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 07:19:38,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901045103] [2021-06-17 07:19:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 07:19:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:19:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:19:39,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 07:19:39,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901045103] [2021-06-17 07:19:39,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901045103] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:19:39,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279053892] [2021-06-17 07:19:39,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-06-17 07:19:39,087 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-17 07:19:39,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 07:19:39,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-17 07:19:39,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 07:19:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:19:39,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279053892] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:19:39,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 07:19:39,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-06-17 07:19:39,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260907365] [2021-06-17 07:19:39,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-17 07:19:39,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 07:19:39,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-17 07:19:39,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-06-17 07:19:39,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:19:39,361 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 07:19:39,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 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) [2021-06-17 07:19:39,361 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:19:39,361 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:19:39,361 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:19:39,361 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:19:39,361 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-17 07:19:39,361 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 07:19:39,362 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-17 07:19:39,362 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-17 07:19:39,362 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-17 07:19:39,362 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 07:19:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 07:19:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 07:19:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-17 07:19:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-17 07:19:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-17 07:19:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 07:19:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 07:19:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-17 07:19:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-17 07:19:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-17 07:19:39,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 07:19:39,741 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 07:19:39,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 07:19:39,741 INFO L82 PathProgramCache]: Analyzing trace with hash 726661421, now seen corresponding path program 7 times [2021-06-17 07:19:39,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 07:19:39,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454455602] [2021-06-17 07:19:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 07:19:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:19:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 07:19:40,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 07:19:40,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454455602] [2021-06-17 07:19:40,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454455602] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 07:19:40,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220570746] [2021-06-17 07:19:40,518 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-06-17 07:19:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 07:19:40,552 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 64 conjunts are in the unsatisfiable core [2021-06-17 07:19:40,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 07:19:41,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 07:19:41,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 07:19:41,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 07:19:41,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 109 [2021-06-17 07:19:41,454 INFO L550 ElimStorePlain]: Start of recursive call 2: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-06-17 07:19:41,464 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:19:41,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 07:19:41,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 07:19:41,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 07:19:41,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 07:19:41,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 77 [2021-06-17 07:19:41,481 INFO L550 ElimStorePlain]: Start of recursive call 3: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-06-17 07:19:41,489 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:19:41,608 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-06-17 07:19:41,609 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 07:19:41,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 77 treesize of output 273 [2021-06-17 07:19:42,056 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 192 [2021-06-17 07:19:43,117 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 239 DAG size of output: 216 [2021-06-17 07:19:45,757 WARN L205 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-06-17 07:19:48,393 WARN L205 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-06-17 07:19:51,299 WARN L205 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 292 DAG size of output: 262 [2021-06-17 07:20:01,085 WARN L205 SmtUtils]: Spent 9.78 s on a formula simplification. DAG size of input: 258 DAG size of output: 270 [2021-06-17 07:20:10,831 WARN L205 SmtUtils]: Spent 9.73 s on a formula simplification. DAG size of input: 253 DAG size of output: 274 [2021-06-17 07:20:20,578 WARN L205 SmtUtils]: Spent 9.74 s on a formula simplification. DAG size of input: 248 DAG size of output: 266 [2021-06-17 07:20:23,265 WARN L205 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 240 DAG size of output: 240 [2021-06-17 07:20:23,616 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 145 [2021-06-17 07:20:24,704 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2021-06-17 07:20:25,125 WARN L205 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2021-06-17 07:20:25,467 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 155 [2021-06-17 07:20:25,896 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 167 [2021-06-17 07:20:26,521 WARN L205 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 161 [2021-06-17 07:20:27,720 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 326 DAG size of output: 308 [2021-06-17 07:20:30,889 WARN L205 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 426 DAG size of output: 391 [2021-06-17 07:20:31,037 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 151 [2021-06-17 07:20:39,011 WARN L205 SmtUtils]: Spent 7.97 s on a formula simplification. DAG size of input: 513 DAG size of output: 465 [2021-06-17 07:20:58,515 WARN L205 SmtUtils]: Spent 19.50 s on a formula simplification. DAG size of input: 595 DAG size of output: 525 [2021-06-17 07:21:47,905 WARN L205 SmtUtils]: Spent 49.39 s on a formula simplification. DAG size of input: 694 DAG size of output: 619 [2021-06-17 07:23:46,085 WARN L205 SmtUtils]: Spent 1.97 m on a formula simplification. DAG size of input: 782 DAG size of output: 704 [2021-06-17 07:28:24,096 WARN L205 SmtUtils]: Spent 4.63 m on a formula simplification. DAG size of input: 867 DAG size of output: 788 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown