/usr/bin/java -Xmx16000000000 -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-DelaySleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 11:34:11,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 11:34:11,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 11:34:11,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 11:34:11,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-06 11:34:11,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-06 11:34:11,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-06 11:34:11,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-06 11:34:11,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-06 11:34:11,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-06 11:34:11,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-06 11:34:11,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-06 11:34:11,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-06 11:34:11,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-06 11:34:11,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-06 11:34:11,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-06 11:34:11,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-06 11:34:11,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-06 11:34:11,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-06 11:34:11,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-06 11:34:11,184 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-DelaySleep-NoLbe.epf [2021-06-06 11:34:11,210 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 11:34:11,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 11:34:11,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 11:34:11,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 11:34:11,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 11:34:11,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 11:34:11,213 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 11:34:11,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 11:34:11,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 11:34:11,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 11:34:11,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 11:34:11,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 11:34:11,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 11:34:11,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 11:34:11,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 11:34:11,215 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 11:34:11,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 11:34:11,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 11:34:11,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 11:34:11,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 11:34:11,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 11:34:11,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 11:34:11,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 11:34:11,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 11:34:11,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 11:34:11,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 11:34:11,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 11:34:11,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 11:34:11,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 11:34:11,216 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 11:34:11,216 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 11:34:11,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 11:34:11,216 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 11:34:11,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 11:34:11,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 11:34:11,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 11:34:11,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 11:34:11,503 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 11:34:11,504 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 11:34:11,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl [2021-06-06 11:34:11,505 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl' [2021-06-06 11:34:11,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 11:34:11,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 11:34:11,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 11:34:11,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 11:34:11,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 11:34:11,546 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 06.06 11:34:11" (1/1) ... [2021-06-06 11:34:11,551 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 06.06 11:34:11" (1/1) ... [2021-06-06 11:34:11,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 11:34:11,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 11:34:11,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 11:34:11,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 11:34:11,563 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 06.06 11:34:11" (1/1) ... [2021-06-06 11:34:11,564 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 06.06 11:34:11" (1/1) ... [2021-06-06 11:34:11,565 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 06.06 11:34:11" (1/1) ... [2021-06-06 11:34:11,566 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 06.06 11:34:11" (1/1) ... [2021-06-06 11:34:11,569 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 06.06 11:34:11" (1/1) ... [2021-06-06 11:34:11,571 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 06.06 11:34:11" (1/1) ... [2021-06-06 11:34:11,572 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 06.06 11:34:11" (1/1) ... [2021-06-06 11:34:11,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 11:34:11,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 11:34:11,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 11:34:11,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 11:34:11,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:34:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 11:34:11,640 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 11:34:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 11:34:11,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 11:34:11,641 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 11:34:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 11:34:11,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 11:34:11,641 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 11:34:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 11:34:11,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 11:34:11,641 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 11:34:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 11:34:11,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 11:34:11,642 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 11:34:11,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 11:34:11,816 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 11:34:11,817 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 11:34:11 BoogieIcfgContainer [2021-06-06 11:34:11,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 11:34:11,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 11:34:11,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 11:34:11,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 11:34:11,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:34:11" (1/2) ... [2021-06-06 11:34:11,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d62ea and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 11:34:11, skipping insertion in model container [2021-06-06 11:34:11,820 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 06.06 11:34:11" (2/2) ... [2021-06-06 11:34:11,821 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-06-06 11:34:11,825 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 11:34:11,825 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 11:34:11,825 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 11:34:11,825 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 11:34:11,891 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-06 11:34:11,918 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 11:34:11,947 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 11:34:11,947 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 11:34:11,947 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 11:34:11,947 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 11:34:11,947 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 11:34:11,947 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 11:34:11,947 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 11:34:11,947 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 11:34:12,009 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:34:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:34:12,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1421528455, now seen corresponding path program 1 times [2021-06-06 11:34:12,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:34:12,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217935451] [2021-06-06 11:34:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:34:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:34:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:34:12,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:34:12,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217935451] [2021-06-06 11:34:12,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217935451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 11:34:12,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 11:34:12,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-06 11:34:12,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248194047] [2021-06-06 11:34:12,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 11:34:12,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:34:12,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 11:34:12,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 11:34:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:12,149 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:34:12,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:34:12,150 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:12,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:12,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 11:34:12,179 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:34:12,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:34:12,181 INFO L82 PathProgramCache]: Analyzing trace with hash 690038743, now seen corresponding path program 1 times [2021-06-06 11:34:12,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:34:12,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358091950] [2021-06-06 11:34:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:34:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:34:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 11:34:12,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:34:12,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358091950] [2021-06-06 11:34:12,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358091950] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 11:34:12,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 11:34:12,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 11:34:12,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275169753] [2021-06-06 11:34:12,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 11:34:12,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:34:12,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 11:34:12,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-06 11:34:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:12,243 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:34:12,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:34:12,244 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:12,244 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:12,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:12,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:12,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 11:34:12,277 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:34:12,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:34:12,277 INFO L82 PathProgramCache]: Analyzing trace with hash 2139358133, now seen corresponding path program 1 times [2021-06-06 11:34:12,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:34:12,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309507110] [2021-06-06 11:34:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:34:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:34:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:34:12,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:34:12,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309507110] [2021-06-06 11:34:12,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309507110] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:12,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840421939] [2021-06-06 11:34:12,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:34:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:34:12,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-06 11:34:12,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:34:12,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 11:34:12,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-06-06 11:34:12,839 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-06 11:34:12,849 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:34:12,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 11:34:12,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-06-06 11:34:12,855 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-06 11:34:12,860 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:34:12,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-06 11:34:12,863 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 11:34:12,867 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:34:12,869 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-06 11:34:12,869 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2021-06-06 11:34:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:34:12,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840421939] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:12,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:34:12,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 11:34:12,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256720427] [2021-06-06 11:34:12,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 11:34:12,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:34:12,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 11:34:12,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 11:34:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:12,890 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:34:12,891 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:34:12,891 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:12,891 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:12,891 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:34:13,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:34:13,213 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:34:13,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:34:13,213 INFO L82 PathProgramCache]: Analyzing trace with hash 428481043, now seen corresponding path program 2 times [2021-06-06 11:34:13,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:34:13,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618242218] [2021-06-06 11:34:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:34:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:34:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:34:13,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:34:13,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618242218] [2021-06-06 11:34:13,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618242218] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:13,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331996343] [2021-06-06 11:34:13,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:34:13,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 11:34:13,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:34:13,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 11:34:13,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:34:13,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:34:13,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331996343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:13,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:34:13,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 11:34:13,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765090598] [2021-06-06 11:34:13,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 11:34:13,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:34:13,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 11:34:13,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-06 11:34:13,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:13,393 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:34:13,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:34:13,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:13,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:13,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:34:13,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:34:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:34:13,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:34:13,741 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:34:13,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:34:13,741 INFO L82 PathProgramCache]: Analyzing trace with hash -59020201, now seen corresponding path program 1 times [2021-06-06 11:34:13,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:34:13,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823760889] [2021-06-06 11:34:13,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:34:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:34:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 11:34:13,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:34:13,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823760889] [2021-06-06 11:34:13,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823760889] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:13,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147256407] [2021-06-06 11:34:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:34:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:34:13,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 11:34:13,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:34:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 11:34:13,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147256407] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:13,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:34:13,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 11:34:13,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112036137] [2021-06-06 11:34:13,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 11:34:13,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:34:13,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 11:34:13,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-06 11:34:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:13,926 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:34:13,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:34:13,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:13,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:13,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:34:13,927 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:34:13,927 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:34:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:34:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 11:34:14,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:34:14,229 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:34:14,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:34:14,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1348287435, now seen corresponding path program 2 times [2021-06-06 11:34:14,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:34:14,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88461406] [2021-06-06 11:34:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:34:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:34:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:34:14,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:34:14,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88461406] [2021-06-06 11:34:14,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88461406] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:14,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776720493] [2021-06-06 11:34:14,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:34:14,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 11:34:14,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:34:14,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-06 11:34:14,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:34:15,007 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:34:15,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 73 [2021-06-06 11:34:15,220 INFO L550 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-06 11:34:15,238 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:34:15,259 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:34:15,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 61 [2021-06-06 11:34:15,438 INFO L550 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-06 11:34:15,473 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:34:15,512 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:34:15,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 85 [2021-06-06 11:34:15,655 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-06-06 11:34:15,997 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 103 [2021-06-06 11:34:15,998 INFO L628 ElimStorePlain]: treesize reduction 322, result has 68.1 percent of original size [2021-06-06 11:34:16,467 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-06 11:34:16,468 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:77, output treesize:228 [2021-06-06 11:34:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:34:16,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776720493] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:16,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:34:16,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 25 [2021-06-06 11:34:16,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409941057] [2021-06-06 11:34:16,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-06 11:34:16,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:34:16,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-06 11:34:16,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-06-06 11:34:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:16,542 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:34:16,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:34:16,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:16,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:16,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:34:16,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:34:16,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 11:34:16,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:17,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:17,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:17,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:34:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:34:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 11:34:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 11:34:17,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-06 11:34:17,607 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:34:17,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:34:17,607 INFO L82 PathProgramCache]: Analyzing trace with hash 911449235, now seen corresponding path program 3 times [2021-06-06 11:34:17,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:34:17,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602629914] [2021-06-06 11:34:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:34:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:34:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:34:17,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:34:17,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602629914] [2021-06-06 11:34:17,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602629914] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:17,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609961142] [2021-06-06 11:34:17,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:34:17,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 11:34:17,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:34:17,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-06 11:34:17,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:34:17,884 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:34:17,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609961142] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:17,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:34:17,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-06-06 11:34:17,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016780473] [2021-06-06 11:34:17,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 11:34:17,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:34:17,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 11:34:17,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-06 11:34:17,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:17,885 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:34:17,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:34:17,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:17,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:17,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:34:17,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:34:17,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 11:34:17,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 11:34:17,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:18,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:34:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:34:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 11:34:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 11:34:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 11:34:18,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:34:18,477 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:34:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:34:18,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1145065769, now seen corresponding path program 4 times [2021-06-06 11:34:18,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:34:18,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320415970] [2021-06-06 11:34:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:34:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:34:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 11:34:18,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:34:18,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320415970] [2021-06-06 11:34:18,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320415970] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:18,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117340199] [2021-06-06 11:34:18,558 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:34:18,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 11:34:18,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:34:18,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-06 11:34:18,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:34:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 11:34:18,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117340199] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:18,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:34:18,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-06-06 11:34:18,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88046002] [2021-06-06 11:34:18,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 11:34:18,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:34:18,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 11:34:18,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-06-06 11:34:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:18,693 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:34:18,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:34:18,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:18,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:18,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:34:18,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:34:18,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 11:34:18,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 11:34:18,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 11:34:18,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:34:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:34:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 11:34:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 11:34:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 11:34:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 11:34:19,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-06-06 11:34:19,007 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:34:19,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:34:19,007 INFO L82 PathProgramCache]: Analyzing trace with hash 754469045, now seen corresponding path program 5 times [2021-06-06 11:34:19,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:34:19,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276682307] [2021-06-06 11:34:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:34:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:34:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:34:19,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:34:19,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276682307] [2021-06-06 11:34:19,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276682307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:19,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490014957] [2021-06-06 11:34:19,450 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:34:19,484 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-06 11:34:19,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:34:19,485 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-06 11:34:19,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:34:28,645 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-06 11:34:29,136 WARN L205 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-06-06 11:34:29,887 WARN L205 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-06-06 11:34:29,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 11:34:29,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:34:29,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:34:29,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:34:29,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:34:29,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 77 [2021-06-06 11:34:29,927 INFO L550 ElimStorePlain]: Start of recursive call 2: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-06 11:34:29,936 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:34:29,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 11:34:29,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:34:29,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:34:29,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:34:29,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:34:29,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 57 [2021-06-06 11:34:29,944 INFO L550 ElimStorePlain]: Start of recursive call 3: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-06 11:34:29,952 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:34:30,000 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:34:30,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 137 [2021-06-06 11:34:30,623 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 197 [2021-06-06 11:34:30,996 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 240 [2021-06-06 11:34:32,023 WARN L205 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-06-06 11:34:33,003 WARN L205 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-06-06 11:34:33,973 WARN L205 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 295 [2021-06-06 11:34:34,321 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-06 11:34:34,823 WARN L205 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-06-06 11:34:35,196 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-06-06 11:34:35,330 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-06 11:34:35,457 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-06 11:34:36,155 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-06 11:34:36,561 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-06 11:34:36,934 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-06 11:34:38,572 WARN L205 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-06 11:34:39,648 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 313 DAG size of output: 293 [2021-06-06 11:34:40,629 WARN L205 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-06 11:34:41,744 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-06-06 11:34:42,778 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 286 DAG size of output: 288 [2021-06-06 11:34:43,690 WARN L205 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-06 11:34:44,258 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2021-06-06 11:34:44,484 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 147 [2021-06-06 11:34:44,869 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-06 11:34:45,330 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-06-06 11:34:45,596 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-06-06 11:34:45,725 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-06 11:34:45,853 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-06 11:34:46,503 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-06 11:34:46,872 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-06 11:34:47,239 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-06 11:34:48,234 WARN L205 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-06 11:34:49,224 WARN L205 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-06 11:34:50,217 WARN L205 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-06 11:34:51,338 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-06-06 11:34:51,341 INFO L550 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-06 11:34:53,488 WARN L205 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 290 DAG size of output: 248 [2021-06-06 11:34:53,489 INFO L628 ElimStorePlain]: treesize reduction 15036, result has 42.6 percent of original size [2021-06-06 11:34:53,883 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 249 [2021-06-06 11:34:54,178 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 236 [2021-06-06 11:34:55,253 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-06 11:34:55,254 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:106, output treesize:3 [2021-06-06 11:34:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:34:55,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490014957] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:34:55,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:34:55,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2021-06-06 11:34:55,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029747296] [2021-06-06 11:34:55,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-06 11:34:55,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:34:55,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-06 11:34:55,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=740, Unknown=5, NotChecked=0, Total=870 [2021-06-06 11:34:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:34:55,275 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:34:55,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:34:55,275 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:34:55,276 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:34:55,276 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:34:55,276 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:34:55,276 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 11:34:55,276 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 11:34:55,276 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 11:34:55,276 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-06 11:34:55,276 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:35:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:35:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:35:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:35:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:35:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 11:35:58,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 11:35:58,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 11:35:58,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 11:35:58,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 11:35:58,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-06-06 11:35:58,353 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:35:58,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:35:58,354 INFO L82 PathProgramCache]: Analyzing trace with hash -127394481, now seen corresponding path program 6 times [2021-06-06 11:35:58,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:35:58,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458090124] [2021-06-06 11:35:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:35:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:35:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:35:58,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:35:58,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458090124] [2021-06-06 11:35:58,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458090124] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:35:58,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470911645] [2021-06-06 11:35:58,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:35:58,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-06 11:35:58,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 11:35:58,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-06 11:35:58,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:35:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:35:58,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470911645] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:35:58,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 11:35:58,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-06-06 11:35:58,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753785119] [2021-06-06 11:35:58,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-06 11:35:58,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 11:35:58,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-06 11:35:58,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-06-06 11:35:58,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:35:58,755 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 11:35:58,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 11:35:58,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:35:58,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:35:58,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:35:58,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:35:58,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 11:35:58,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 11:35:58,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-06 11:35:58,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-06 11:35:58,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-06 11:35:58,756 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 11:35:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 11:35:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 11:35:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 11:35:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 11:35:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 11:35:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 11:35:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 11:35:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 11:35:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 11:35:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 11:35:59,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:35:59,143 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 11:35:59,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 11:35:59,143 INFO L82 PathProgramCache]: Analyzing trace with hash 726661421, now seen corresponding path program 7 times [2021-06-06 11:35:59,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 11:35:59,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456782803] [2021-06-06 11:35:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 11:35:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:35:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 11:35:59,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 11:35:59,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456782803] [2021-06-06 11:35:59,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456782803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 11:35:59,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452135689] [2021-06-06 11:35:59,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 11:35:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 11:35:59,840 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 64 conjunts are in the unsatisfiable core [2021-06-06 11:35:59,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 11:36:00,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 11:36:00,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 11:36:00,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 11:36:00,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 109 [2021-06-06 11:36:00,619 INFO L550 ElimStorePlain]: Start of recursive call 2: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-06-06 11:36:00,630 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:36:00,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 11:36:00,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 11:36:00,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 11:36:00,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 11:36:00,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 77 [2021-06-06 11:36:00,643 INFO L550 ElimStorePlain]: Start of recursive call 3: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-06-06 11:36:00,651 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:36:00,775 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-06-06 11:36:00,776 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 11:36:00,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 77 treesize of output 273 [2021-06-06 11:36:01,201 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 192 [2021-06-06 11:36:02,235 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 239 DAG size of output: 216 [2021-06-06 11:36:04,818 WARN L205 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-06-06 11:36:07,473 WARN L205 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-06-06 11:36:10,280 WARN L205 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 292 DAG size of output: 262 [2021-06-06 11:36:19,764 WARN L205 SmtUtils]: Spent 9.48 s on a formula simplification. DAG size of input: 258 DAG size of output: 270 [2021-06-06 11:36:29,122 WARN L205 SmtUtils]: Spent 9.34 s on a formula simplification. DAG size of input: 253 DAG size of output: 274 [2021-06-06 11:36:38,469 WARN L205 SmtUtils]: Spent 9.34 s on a formula simplification. DAG size of input: 248 DAG size of output: 266 [2021-06-06 11:36:41,050 WARN L205 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 240 DAG size of output: 240 [2021-06-06 11:36:41,322 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 145 [2021-06-06 11:36:42,375 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2021-06-06 11:36:42,783 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2021-06-06 11:36:43,054 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 155 [2021-06-06 11:36:43,466 WARN L205 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 167 [2021-06-06 11:36:44,085 WARN L205 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 161 [2021-06-06 11:36:45,244 WARN L205 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 308 [2021-06-06 11:36:48,277 WARN L205 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 426 DAG size of output: 391 [2021-06-06 11:36:48,436 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 151 [2021-06-06 11:36:56,089 WARN L205 SmtUtils]: Spent 7.65 s on a formula simplification. DAG size of input: 513 DAG size of output: 465 [2021-06-06 11:37:14,787 WARN L205 SmtUtils]: Spent 18.69 s on a formula simplification. DAG size of input: 595 DAG size of output: 525 [2021-06-06 11:38:02,446 WARN L205 SmtUtils]: Spent 47.66 s on a formula simplification. DAG size of input: 694 DAG size of output: 619 [2021-06-06 11:39:57,013 WARN L205 SmtUtils]: Spent 1.91 m on a formula simplification. DAG size of input: 782 DAG size of output: 704 [2021-06-06 11:44:26,868 WARN L205 SmtUtils]: Spent 4.50 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