/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistent-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 09:20:01,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 09:20:01,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 09:20:01,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 09:20:01,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-10 09:20:01,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-10 09:20:01,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-10 09:20:01,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-10 09:20:01,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-10 09:20:01,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-10 09:20:01,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-10 09:20:01,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-10 09:20:01,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-10 09:20:01,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-10 09:20:01,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-10 09:20:01,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-10 09:20:01,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-10 09:20:01,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 09:20:01,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 09:20:01,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 09:20:01,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistent-NoLbe-Lockstep.epf [2021-07-10 09:20:01,941 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 09:20:01,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 09:20:01,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 09:20:01,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 09:20:01,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 09:20:01,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 09:20:01,944 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 09:20:01,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 09:20:01,944 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 09:20:01,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 09:20:01,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 09:20:01,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 09:20:01,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 09:20:01,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 09:20:01,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 09:20:01,946 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 09:20:01,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 09:20:01,946 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 09:20:01,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 09:20:01,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 09:20:01,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 09:20:01,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 09:20:01,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 09:20:01,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 09:20:01,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 09:20:01,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 09:20:01,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 09:20:01,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 09:20:01,947 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-10 09:20:01,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 09:20:01,948 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 09:20:01,948 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 09:20:01,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 09:20:01,948 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2021-07-10 09:20:01,948 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 09:20:02,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 09:20:02,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 09:20:02,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 09:20:02,209 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 09:20:02,210 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 09:20:02,210 INFO L432 ainManager$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 [2021-07-10 09:20:02,210 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' [2021-07-10 09:20:02,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 09:20:02,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 09:20:02,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 09:20:02,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 09:20:02,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 09:20:02,247 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 10.07 09:20:02" (1/1) ... [2021-07-10 09:20:02,252 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 10.07 09:20:02" (1/1) ... [2021-07-10 09:20:02,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 09:20:02,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 09:20:02,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 09:20:02,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 09:20:02,264 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 10.07 09:20:02" (1/1) ... [2021-07-10 09:20:02,264 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 10.07 09:20:02" (1/1) ... [2021-07-10 09:20:02,266 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 10.07 09:20:02" (1/1) ... [2021-07-10 09:20:02,266 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 10.07 09:20:02" (1/1) ... [2021-07-10 09:20:02,269 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 10.07 09:20:02" (1/1) ... [2021-07-10 09:20:02,272 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 10.07 09:20:02" (1/1) ... [2021-07-10 09:20:02,272 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 10.07 09:20:02" (1/1) ... [2021-07-10 09:20:02,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 09:20:02,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 09:20:02,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 09:20:02,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 09:20:02,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:20:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 09:20:02,357 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 09:20:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 09:20:02,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 09:20:02,358 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 09:20:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 09:20:02,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 09:20:02,358 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 09:20:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 09:20:02,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 09:20:02,360 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 09:20:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 09:20:02,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 09:20:02,360 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 09:20:02,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 09:20:02,544 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 09:20:02,545 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 09:20:02 BoogieIcfgContainer [2021-07-10 09:20:02,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 09:20:02,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 09:20:02,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 09:20:02,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 09:20:02,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:20:02" (1/2) ... [2021-07-10 09:20:02,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab7e221 and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 09:20:02, skipping insertion in model container [2021-07-10 09:20:02,549 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 10.07 09:20:02" (2/2) ... [2021-07-10 09:20:02,550 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-07-10 09:20:02,553 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 09:20:02,553 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 09:20:02,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 09:20:02,554 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 09:20:02,577 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 09:20:02,600 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 [2021-07-10 09:20:02,665 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 09:20:02,668 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 09:20:02,668 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 09:20:02,668 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 09:20:02,668 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 09:20:02,668 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 09:20:02,668 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 09:20:02,669 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 09:20:02,779 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:20:02,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:20:02,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1294754641, now seen corresponding path program 1 times [2021-07-10 09:20:02,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:20:02,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933961144] [2021-07-10 09:20:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:20:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:20:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:20:02,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:20:02,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933961144] [2021-07-10 09:20:02,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933961144] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 09:20:02,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 09:20:02,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-10 09:20:02,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929703120] [2021-07-10 09:20:02,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-10 09:20:02,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:20:02,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-10 09:20:02,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-10 09:20:02,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:02,935 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:20:02,936 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) [2021-07-10 09:20:02,937 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:02,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:02,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 09:20:02,968 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:20:02,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:20:02,971 INFO L82 PathProgramCache]: Analyzing trace with hash -573812561, now seen corresponding path program 1 times [2021-07-10 09:20:02,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:20:02,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121303768] [2021-07-10 09:20:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:20:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:20:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 09:20:03,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:20:03,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121303768] [2021-07-10 09:20:03,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121303768] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 09:20:03,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 09:20:03,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-10 09:20:03,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785779219] [2021-07-10 09:20:03,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 09:20:03,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:20:03,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 09:20:03,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-10 09:20:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:03,031 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:20:03,031 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) [2021-07-10 09:20:03,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:03,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:03,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:03,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-10 09:20:03,077 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:20:03,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:20:03,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1553043955, now seen corresponding path program 1 times [2021-07-10 09:20:03,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:20:03,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574094729] [2021-07-10 09:20:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:20:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:20:03,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:20:03,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:20:03,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574094729] [2021-07-10 09:20:03,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574094729] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:03,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495218662] [2021-07-10 09:20:03,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:20:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:20:03,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-10 09:20:03,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:20:03,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 09:20:03,563 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 [2021-07-10 09:20:03,566 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:20:03,571 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:20:03,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 09:20:03,576 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 [2021-07-10 09:20:03,580 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:20:03,586 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:20:03,588 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 [2021-07-10 09:20:03,590 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-10 09:20:03,594 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:20:03,598 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. [2021-07-10 09:20:03,598 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2021-07-10 09:20:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:20:03,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495218662] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:03,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:20:03,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 09:20:03,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224928306] [2021-07-10 09:20:03,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 09:20:03,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:20:03,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 09:20:03,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-07-10 09:20:03,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:03,641 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:20:03,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 09:20:03,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:03,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:03,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:20:04,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:20:04,005 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:20:04,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:20:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash -579044245, now seen corresponding path program 2 times [2021-07-10 09:20:04,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:20:04,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465753200] [2021-07-10 09:20:04,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:20:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:20:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:20:04,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:20:04,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465753200] [2021-07-10 09:20:04,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465753200] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:04,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021890471] [2021-07-10 09:20:04,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:20:04,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 09:20:04,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:20:04,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 09:20:04,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:20:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:20:04,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021890471] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:04,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:20:04,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-10 09:20:04,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799712598] [2021-07-10 09:20:04,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 09:20:04,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:20:04,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 09:20:04,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-07-10 09:20:04,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:04,192 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:20:04,192 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) [2021-07-10 09:20:04,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:04,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:04,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:20:04,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:20:04,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:20:04,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:20:04,547 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:20:04,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:20:04,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1258232401, now seen corresponding path program 1 times [2021-07-10 09:20:04,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:20:04,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896083556] [2021-07-10 09:20:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:20:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:20:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 09:20:04,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:20:04,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896083556] [2021-07-10 09:20:04,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896083556] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:04,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89591532] [2021-07-10 09:20:04,603 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 [2021-07-10 09:20:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:20:04,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 09:20:04,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:20:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 09:20:04,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89591532] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:04,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:20:04,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 09:20:04,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658473711] [2021-07-10 09:20:04,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 09:20:04,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:20:04,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 09:20:04,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-10 09:20:04,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:04,754 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:20:04,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 09:20:04,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:04,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:04,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:20:04,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:20:04,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:20:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:20:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:20:05,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:20:05,061 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:20:05,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:20:05,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1336527475, now seen corresponding path program 2 times [2021-07-10 09:20:05,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:20:05,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014935919] [2021-07-10 09:20:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:20:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:20:05,369 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:20:05,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:20:05,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014935919] [2021-07-10 09:20:05,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014935919] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:05,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962300142] [2021-07-10 09:20:05,370 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 [2021-07-10 09:20:05,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 09:20:05,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:20:05,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 37 conjunts are in the unsatisfiable core [2021-07-10 09:20:05,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:20:05,831 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:20:05,831 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 [2021-07-10 09:20:06,046 INFO L550 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-07-10 09:20:06,064 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:20:06,083 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:20:06,084 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 [2021-07-10 09:20:06,266 INFO L550 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-07-10 09:20:06,298 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:20:06,337 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:20:06,338 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 [2021-07-10 09:20:06,493 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-07-10 09:20:06,860 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 103 [2021-07-10 09:20:06,861 INFO L628 ElimStorePlain]: treesize reduction 322, result has 68.1 percent of original size [2021-07-10 09:20:07,335 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. [2021-07-10 09:20:07,336 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:77, output treesize:228 [2021-07-10 09:20:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:20:07,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962300142] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:07,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:20:07,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 25 [2021-07-10 09:20:07,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809681249] [2021-07-10 09:20:07,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-10 09:20:07,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:20:07,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-10 09:20:07,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-07-10 09:20:07,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:07,416 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:20:07,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 09:20:07,416 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:07,416 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:07,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:20:07,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:20:07,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:20:07,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:20:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:20:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:20:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-10 09:20:08,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-10 09:20:08,793 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:20:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:20:08,793 INFO L82 PathProgramCache]: Analyzing trace with hash 731317739, now seen corresponding path program 3 times [2021-07-10 09:20:08,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:20:08,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798178806] [2021-07-10 09:20:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:20:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:20:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:20:08,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:20:08,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798178806] [2021-07-10 09:20:08,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798178806] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:08,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555667703] [2021-07-10 09:20:08,876 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 [2021-07-10 09:20:08,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-10 09:20:08,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:20:08,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 09:20:08,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:20:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:20:09,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555667703] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:09,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:20:09,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-07-10 09:20:09,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170820929] [2021-07-10 09:20:09,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-10 09:20:09,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:20:09,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-10 09:20:09,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-07-10 09:20:09,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:09,049 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:20:09,049 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) [2021-07-10 09:20:09,049 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:09,049 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:09,049 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:20:09,049 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:20:09,049 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:20:09,049 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-10 09:20:09,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:20:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:20:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:20:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-10 09:20:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-10 09:20:09,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:20:09,597 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:20:09,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:20:09,597 INFO L82 PathProgramCache]: Analyzing trace with hash -138760401, now seen corresponding path program 4 times [2021-07-10 09:20:09,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:20:09,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426699362] [2021-07-10 09:20:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:20:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:20:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 09:20:09,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:20:09,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426699362] [2021-07-10 09:20:09,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426699362] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:09,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134525410] [2021-07-10 09:20:09,667 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 [2021-07-10 09:20:09,701 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 09:20:09,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:20:09,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 09:20:09,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:20:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 09:20:09,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134525410] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:09,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:20:09,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-07-10 09:20:09,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24972017] [2021-07-10 09:20:09,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-10 09:20:09,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:20:09,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-10 09:20:09,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-07-10 09:20:09,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:09,803 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:20:09,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 09:20:09,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:09,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:09,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:20:09,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:20:09,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:20:09,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-10 09:20:09,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-10 09:20:09,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:20:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:20:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:20:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-10 09:20:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-10 09:20:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 09:20:10,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-07-10 09:20:10,189 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:20:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:20:10,190 INFO L82 PathProgramCache]: Analyzing trace with hash 2141798669, now seen corresponding path program 5 times [2021-07-10 09:20:10,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:20:10,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141103584] [2021-07-10 09:20:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:20:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:20:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:20:10,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:20:10,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141103584] [2021-07-10 09:20:10,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141103584] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:10,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619422817] [2021-07-10 09:20:10,646 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 [2021-07-10 09:20:10,686 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-10 09:20:10,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:20:10,687 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-07-10 09:20:10,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:20:20,543 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-07-10 09:20:20,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 09:20:20,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:20:20,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:20:20,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:20:20,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:20:20,672 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 [2021-07-10 09:20:20,676 INFO L550 ElimStorePlain]: Start of recursive call 2: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-07-10 09:20:20,686 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:20:20,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 09:20:20,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:20:20,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:20:20,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:20:20,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:20:20,693 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 [2021-07-10 09:20:20,695 INFO L550 ElimStorePlain]: Start of recursive call 3: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-07-10 09:20:20,704 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:20:20,756 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:20:20,757 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 [2021-07-10 09:20:21,413 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 197 [2021-07-10 09:20:21,799 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 240 [2021-07-10 09:20:22,852 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-07-10 09:20:23,888 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-07-10 09:20:24,900 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 315 DAG size of output: 295 [2021-07-10 09:20:25,265 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-07-10 09:20:25,753 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-07-10 09:20:26,056 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-07-10 09:20:26,191 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-07-10 09:20:26,327 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-07-10 09:20:27,035 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-07-10 09:20:27,419 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-07-10 09:20:27,803 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-07-10 09:20:28,475 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2021-07-10 09:20:29,560 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-07-10 09:20:30,621 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 313 DAG size of output: 293 [2021-07-10 09:20:31,647 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-07-10 09:20:32,818 WARN L205 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-07-10 09:20:33,906 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 286 DAG size of output: 288 [2021-07-10 09:20:34,877 WARN L205 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-07-10 09:20:35,496 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2021-07-10 09:20:35,735 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 147 [2021-07-10 09:20:36,133 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-07-10 09:20:36,614 WARN L205 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-07-10 09:20:36,930 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-07-10 09:20:37,063 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-07-10 09:20:37,198 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-07-10 09:20:37,887 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-07-10 09:20:38,271 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-07-10 09:20:38,654 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-07-10 09:20:39,684 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-07-10 09:20:40,715 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-07-10 09:20:41,762 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-07-10 09:20:42,933 WARN L205 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-07-10 09:20:42,936 INFO L550 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-07-10 09:20:45,078 WARN L205 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 290 DAG size of output: 248 [2021-07-10 09:20:45,079 INFO L628 ElimStorePlain]: treesize reduction 15036, result has 42.6 percent of original size [2021-07-10 09:20:45,495 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 249 [2021-07-10 09:20:45,796 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 236 [2021-07-10 09:20:46,922 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. [2021-07-10 09:20:46,922 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:106, output treesize:3 [2021-07-10 09:20:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:20:46,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619422817] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:20:46,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:20:46,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2021-07-10 09:20:46,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394744047] [2021-07-10 09:20:46,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-07-10 09:20:46,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:20:46,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-07-10 09:20:46,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=740, Unknown=5, NotChecked=0, Total=870 [2021-07-10 09:20:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:20:46,948 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:20:46,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 09:20:46,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:20:46,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:20:46,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:20:46,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:20:46,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:20:46,949 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-10 09:20:46,949 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-10 09:20:46,949 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-10 09:20:46,949 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:22:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:22:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:22:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:22:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:22:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:22:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-10 09:22:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-10 09:22:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 09:22:31,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:22:31,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-07-10 09:22:31,317 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:22:31,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:22:31,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1128959833, now seen corresponding path program 6 times [2021-07-10 09:22:31,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:22:31,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832558844] [2021-07-10 09:22:31,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:22:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:22:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:22:31,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:22:31,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832558844] [2021-07-10 09:22:31,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832558844] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:22:31,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897652661] [2021-07-10 09:22:31,438 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 [2021-07-10 09:22:31,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-10 09:22:31,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:22:31,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-10 09:22:31,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:22:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:22:31,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897652661] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:22:31,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:22:31,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-07-10 09:22:31,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868356685] [2021-07-10 09:22:31,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-07-10 09:22:31,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:22:31,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-07-10 09:22:31,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-07-10 09:22:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:22:31,686 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:22:31,686 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) [2021-07-10 09:22:31,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:22:31,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:22:31,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:22:31,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:22:31,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:22:31,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-10 09:22:31,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-10 09:22:31,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-10 09:22:31,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:22:31,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:22:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 09:22:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:22:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 09:22:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:22:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:22:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-10 09:22:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-10 09:22:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 09:22:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:22:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-10 09:22:32,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:22:32,153 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:22:32,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:22:32,153 INFO L82 PathProgramCache]: Analyzing trace with hash -858045307, now seen corresponding path program 7 times [2021-07-10 09:22:32,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:22:32,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425087471] [2021-07-10 09:22:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:22:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:22:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:22:32,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:22:32,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425087471] [2021-07-10 09:22:32,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425087471] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:22:32,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824722070] [2021-07-10 09:22:32,875 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 [2021-07-10 09:22:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:22:32,909 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 64 conjunts are in the unsatisfiable core [2021-07-10 09:22:32,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:22:33,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 09:22:33,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 09:22:33,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 09:22:33,712 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 [2021-07-10 09:22:33,715 INFO L550 ElimStorePlain]: Start of recursive call 2: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-07-10 09:22:33,724 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:22:33,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 09:22:33,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 09:22:33,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:22:33,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 09:22:33,734 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 [2021-07-10 09:22:33,736 INFO L550 ElimStorePlain]: Start of recursive call 3: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-07-10 09:22:33,744 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:22:33,879 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-07-10 09:22:33,879 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:22:33,879 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 [2021-07-10 09:22:34,331 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 192 [2021-07-10 09:22:35,414 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 239 DAG size of output: 216 [2021-07-10 09:22:38,122 WARN L205 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-07-10 09:22:40,792 WARN L205 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-07-10 09:22:43,691 WARN L205 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 292 DAG size of output: 262 [2021-07-10 09:22:53,550 WARN L205 SmtUtils]: Spent 9.86 s on a formula simplification. DAG size of input: 258 DAG size of output: 270 [2021-07-10 09:23:03,268 WARN L205 SmtUtils]: Spent 9.71 s on a formula simplification. DAG size of input: 253 DAG size of output: 274 [2021-07-10 09:23:13,015 WARN L205 SmtUtils]: Spent 9.74 s on a formula simplification. DAG size of input: 248 DAG size of output: 266 [2021-07-10 09:23:15,700 WARN L205 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 240 DAG size of output: 240 [2021-07-10 09:23:15,970 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 145 [2021-07-10 09:23:17,058 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2021-07-10 09:23:17,484 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2021-07-10 09:23:17,758 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 155 [2021-07-10 09:23:18,187 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 167 [2021-07-10 09:23:18,822 WARN L205 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 161 [2021-07-10 09:23:20,016 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 326 DAG size of output: 308 [2021-07-10 09:23:23,176 WARN L205 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 426 DAG size of output: 391 [2021-07-10 09:23:23,331 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 151 [2021-07-10 09:23:31,280 WARN L205 SmtUtils]: Spent 7.95 s on a formula simplification. DAG size of input: 513 DAG size of output: 465 [2021-07-10 09:23:50,740 WARN L205 SmtUtils]: Spent 19.46 s on a formula simplification. DAG size of input: 595 DAG size of output: 525 [2021-07-10 09:24:40,134 WARN L205 SmtUtils]: Spent 49.39 s on a formula simplification. DAG size of input: 694 DAG size of output: 619 [2021-07-10 09:26:39,675 WARN L205 SmtUtils]: Spent 1.99 m on a formula simplification. DAG size of input: 782 DAG size of output: 704 [2021-07-10 09:31:21,614 WARN L205 SmtUtils]: Spent 4.70 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