/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Symm.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 21:28:25,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 21:28:25,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 21:28:25,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 21:28:25,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 21:28:25,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 21:28:25,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 21:28:25,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 21:28:25,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 21:28:25,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 21:28:25,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 21:28:25,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-06-16 21:28:25,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 21:28:25,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 21:28:25,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 21:28:25,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Symm.epf [2021-06-16 21:28:25,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 21:28:25,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 21:28:25,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-16 21:28:25,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-16 21:28:25,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 21:28:25,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 21:28:25,999 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 21:28:25,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 21:28:25,999 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 21:28:25,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 21:28:26,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 21:28:26,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 21:28:26,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 21:28:26,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 21:28:26,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 21:28:26,001 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 21:28:26,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 21:28:26,001 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 21:28:26,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 21:28:26,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 21:28:26,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 21:28:26,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 21:28:26,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 21:28:26,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 21:28:26,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 21:28:26,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 21:28:26,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 21:28:26,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 21:28:26,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 21:28:26,002 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 21:28:26,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-16 21:28:26,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 21:28:26,002 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-16 21:28:26,003 INFO L138 SettingsManager]: * Limit POR to symmetric independence in concurrent analysis=true [2021-06-16 21:28:26,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 21:28:26,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 21:28:26,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 21:28:26,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 21:28:26,295 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 21:28:26,298 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 21:28:26,299 INFO L432 ainManager$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 [2021-06-16 21:28:26,299 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' [2021-06-16 21:28:26,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 21:28:26,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 21:28:26,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 21:28:26,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 21:28:26,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 21:28:26,330 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 16.06 09:28:26" (1/1) ... [2021-06-16 21:28:26,336 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 16.06 09:28:26" (1/1) ... [2021-06-16 21:28:26,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 21:28:26,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 21:28:26,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 21:28:26,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 21:28:26,358 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 16.06 09:28:26" (1/1) ... [2021-06-16 21:28:26,358 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 16.06 09:28:26" (1/1) ... [2021-06-16 21:28:26,359 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 16.06 09:28:26" (1/1) ... [2021-06-16 21:28:26,360 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 16.06 09:28:26" (1/1) ... [2021-06-16 21:28:26,361 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 16.06 09:28:26" (1/1) ... [2021-06-16 21:28:26,365 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 16.06 09:28:26" (1/1) ... [2021-06-16 21:28:26,366 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 16.06 09:28:26" (1/1) ... [2021-06-16 21:28:26,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 21:28:26,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 21:28:26,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 21:28:26,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 21:28:26,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 21:28:26,428 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-16 21:28:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 21:28:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 21:28:26,429 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-16 21:28:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 21:28:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 21:28:26,429 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 21:28:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 21:28:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 21:28:26,430 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-16 21:28:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-16 21:28:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-16 21:28:26,431 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 21:28:26,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 21:28:26,626 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 21:28:26,627 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 09:28:26 BoogieIcfgContainer [2021-06-16 21:28:26,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 21:28:26,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 21:28:26,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 21:28:26,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 21:28:26,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:28:26" (1/2) ... [2021-06-16 21:28:26,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed6e5ce and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 09:28:26, skipping insertion in model container [2021-06-16 21:28:26,631 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 16.06 09:28:26" (2/2) ... [2021-06-16 21:28:26,632 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-06-16 21:28:26,636 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 21:28:26,636 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 21:28:26,636 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 21:28:26,652 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 21:28:26,699 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-16 21:28:26,729 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) [2021-06-16 21:28:26,807 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 21:28:26,807 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 21:28:26,807 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 21:28:26,807 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 21:28:26,807 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 21:28:26,808 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 21:28:26,808 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 21:28:26,808 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-16 21:28:26,903 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:26,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1421528455, now seen corresponding path program 1 times [2021-06-16 21:28:26,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:26,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414133428] [2021-06-16 21:28:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:27,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:27,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414133428] [2021-06-16 21:28:27,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414133428] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 21:28:27,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 21:28:27,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 21:28:27,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428812189] [2021-06-16 21:28:27,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 21:28:27,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:27,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 21:28:27,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 21:28:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:27,075 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:27,077 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) [2021-06-16 21:28:27,078 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:27,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 21:28:27,104 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:27,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:27,105 INFO L82 PathProgramCache]: Analyzing trace with hash 690038743, now seen corresponding path program 1 times [2021-06-16 21:28:27,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:27,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397124383] [2021-06-16 21:28:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-16 21:28:27,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:27,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397124383] [2021-06-16 21:28:27,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397124383] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 21:28:27,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 21:28:27,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 21:28:27,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846064460] [2021-06-16 21:28:27,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 21:28:27,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:27,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 21:28:27,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-16 21:28:27,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:27,206 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:27,206 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) [2021-06-16 21:28:27,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:27,206 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:27,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:27,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 21:28:27,261 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:27,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:27,261 INFO L82 PathProgramCache]: Analyzing trace with hash 2139358133, now seen corresponding path program 1 times [2021-06-16 21:28:27,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:27,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537177212] [2021-06-16 21:28:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:27,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:27,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537177212] [2021-06-16 21:28:27,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537177212] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:27,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075649753] [2021-06-16 21:28:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:28:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:27,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-16 21:28:27,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:28:28,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:28:28,081 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 [2021-06-16 21:28:28,086 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-16 21:28:28,091 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:28,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:28:28,094 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 [2021-06-16 21:28:28,097 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-16 21:28:28,103 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:28,105 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 [2021-06-16 21:28:28,106 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-16 21:28:28,111 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:28,113 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. [2021-06-16 21:28:28,113 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2021-06-16 21:28:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:28,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075649753] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:28,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:28:28,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-16 21:28:28,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24586093] [2021-06-16 21:28:28,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-16 21:28:28,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:28,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-16 21:28:28,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-16 21:28:28,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:28,147 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:28,147 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) [2021-06-16 21:28:28,147 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:28,147 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:28,147 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:28,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:28:28,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:28:28,494 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:28,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:28,494 INFO L82 PathProgramCache]: Analyzing trace with hash 428481043, now seen corresponding path program 2 times [2021-06-16 21:28:28,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:28,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639090074] [2021-06-16 21:28:28,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:28,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:28,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639090074] [2021-06-16 21:28:28,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639090074] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:28,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031860374] [2021-06-16 21:28:28,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:28:28,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-16 21:28:28,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:28:28,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-16 21:28:28,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:28:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:28,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031860374] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:28,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:28:28,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-16 21:28:28,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822357759] [2021-06-16 21:28:28,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-16 21:28:28,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:28,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-16 21:28:28,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-16 21:28:28,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:28,724 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:28,724 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) [2021-06-16 21:28:28,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:28,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:28,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:28:28,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:28,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:28:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:28:29,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:28:29,121 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:29,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:29,121 INFO L82 PathProgramCache]: Analyzing trace with hash -59020201, now seen corresponding path program 1 times [2021-06-16 21:28:29,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:29,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984192931] [2021-06-16 21:28:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-16 21:28:29,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:29,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984192931] [2021-06-16 21:28:29,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984192931] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:29,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686662153] [2021-06-16 21:28:29,167 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 [2021-06-16 21:28:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:29,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-16 21:28:29,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:28:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-16 21:28:29,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686662153] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:29,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:28:29,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-16 21:28:29,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679111504] [2021-06-16 21:28:29,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-16 21:28:29,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:29,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-16 21:28:29,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-16 21:28:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:29,313 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:29,313 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) [2021-06-16 21:28:29,313 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:29,313 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:29,313 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:28:29,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:28:29,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:28:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:28:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 21:28:29,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:28:29,616 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:29,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:29,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1348287435, now seen corresponding path program 2 times [2021-06-16 21:28:29,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:29,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444200599] [2021-06-16 21:28:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:29,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:29,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444200599] [2021-06-16 21:28:29,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444200599] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:29,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507344483] [2021-06-16 21:28:29,885 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 [2021-06-16 21:28:29,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-16 21:28:29,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:28:29,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-16 21:28:29,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:28:30,397 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:30,397 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 [2021-06-16 21:28:30,601 INFO L550 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-16 21:28:30,621 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:30,642 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:30,642 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 [2021-06-16 21:28:30,841 INFO L550 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-16 21:28:30,875 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:30,912 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:30,913 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 [2021-06-16 21:28:31,076 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-06-16 21:28:31,414 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 103 [2021-06-16 21:28:31,415 INFO L628 ElimStorePlain]: treesize reduction 322, result has 68.1 percent of original size [2021-06-16 21:28:31,934 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. [2021-06-16 21:28:31,934 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:77, output treesize:228 [2021-06-16 21:28:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:32,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507344483] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:32,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:28:32,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 25 [2021-06-16 21:28:32,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249050449] [2021-06-16 21:28:32,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-16 21:28:32,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:32,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-16 21:28:32,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-06-16 21:28:32,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:32,007 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:32,007 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) [2021-06-16 21:28:32,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:32,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:32,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:28:32,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:28:32,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-16 21:28:32,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:28:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:28:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 21:28:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-16 21:28:33,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-16 21:28:33,043 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:33,044 INFO L82 PathProgramCache]: Analyzing trace with hash 911449235, now seen corresponding path program 3 times [2021-06-16 21:28:33,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:33,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772276757] [2021-06-16 21:28:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:33,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:33,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772276757] [2021-06-16 21:28:33,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772276757] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:33,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267857508] [2021-06-16 21:28:33,122 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 [2021-06-16 21:28:33,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-16 21:28:33,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:28:33,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-16 21:28:33,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:28:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:33,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267857508] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:33,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:28:33,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-06-16 21:28:33,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548201454] [2021-06-16 21:28:33,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-16 21:28:33,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:33,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-16 21:28:33,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-16 21:28:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:33,323 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:33,323 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) [2021-06-16 21:28:33,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:33,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:33,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:28:33,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:28:33,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-16 21:28:33,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-16 21:28:33,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:28:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:28:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 21:28:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-16 21:28:33,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 21:28:33,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:28:33,969 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:33,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:33,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1145065769, now seen corresponding path program 4 times [2021-06-16 21:28:33,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:33,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331109044] [2021-06-16 21:28:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-16 21:28:34,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:34,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331109044] [2021-06-16 21:28:34,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331109044] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:34,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539565766] [2021-06-16 21:28:34,051 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 [2021-06-16 21:28:34,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-16 21:28:34,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:28:34,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-16 21:28:34,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:28:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-16 21:28:34,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539565766] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:34,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:28:34,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-06-16 21:28:34,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595273397] [2021-06-16 21:28:34,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-16 21:28:34,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:28:34,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-16 21:28:34,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-06-16 21:28:34,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:34,188 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:28:34,188 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) [2021-06-16 21:28:34,188 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:34,188 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:34,188 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:28:34,188 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:28:34,188 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-16 21:28:34,188 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-16 21:28:34,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-16 21:28:34,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:28:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:28:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:28:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:28:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:28:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 21:28:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-16 21:28:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 21:28:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-16 21:28:34,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-06-16 21:28:34,513 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:28:34,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:28:34,515 INFO L82 PathProgramCache]: Analyzing trace with hash 754469045, now seen corresponding path program 5 times [2021-06-16 21:28:34,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:28:34,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932548680] [2021-06-16 21:28:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:28:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:28:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:28:35,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:28:35,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932548680] [2021-06-16 21:28:35,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932548680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:28:35,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379704362] [2021-06-16 21:28:35,053 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 [2021-06-16 21:28:35,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-16 21:28:35,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:28:35,167 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-16 21:28:35,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:28:43,939 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-16 21:28:44,365 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-06-16 21:28:44,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:28:44,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:44,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:44,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:44,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:44,413 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 [2021-06-16 21:28:44,416 INFO L550 ElimStorePlain]: Start of recursive call 2: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-16 21:28:44,425 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:44,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:28:44,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:44,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:44,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:44,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:44,431 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 [2021-06-16 21:28:44,433 INFO L550 ElimStorePlain]: Start of recursive call 3: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-16 21:28:44,441 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:44,494 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:28:44,495 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 [2021-06-16 21:28:44,664 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 125 [2021-06-16 21:28:45,213 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 197 [2021-06-16 21:28:45,591 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 240 [2021-06-16 21:28:46,656 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-06-16 21:28:47,674 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-06-16 21:28:48,739 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 315 DAG size of output: 295 [2021-06-16 21:28:49,116 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-16 21:28:49,656 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-06-16 21:28:49,967 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-06-16 21:28:50,119 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-16 21:28:50,252 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-16 21:28:50,967 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-16 21:28:51,355 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-16 21:28:51,798 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-16 21:28:52,449 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2021-06-16 21:28:53,540 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-16 21:28:54,623 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 313 DAG size of output: 293 [2021-06-16 21:28:55,671 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-16 21:28:56,860 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-06-16 21:28:57,963 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 286 DAG size of output: 288 [2021-06-16 21:28:58,929 WARN L205 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-16 21:28:59,516 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2021-06-16 21:28:59,748 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 147 [2021-06-16 21:29:00,142 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-16 21:29:00,627 WARN L205 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-06-16 21:29:00,902 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-06-16 21:29:01,034 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-16 21:29:01,174 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-16 21:29:01,835 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-16 21:29:02,218 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-16 21:29:02,599 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-16 21:29:03,637 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-16 21:29:04,665 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-16 21:29:05,713 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-16 21:29:06,906 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-06-16 21:29:06,910 INFO L550 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-16 21:29:09,181 WARN L205 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 290 DAG size of output: 248 [2021-06-16 21:29:09,182 INFO L628 ElimStorePlain]: treesize reduction 15036, result has 42.6 percent of original size [2021-06-16 21:29:09,595 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 249 [2021-06-16 21:29:09,899 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 236 [2021-06-16 21:29:10,007 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 188 [2021-06-16 21:29:11,061 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. [2021-06-16 21:29:11,061 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:106, output treesize:3 [2021-06-16 21:29:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:29:11,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379704362] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:29:11,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:29:11,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2021-06-16 21:29:11,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157093189] [2021-06-16 21:29:11,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-16 21:29:11,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:29:11,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-16 21:29:11,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=740, Unknown=5, NotChecked=0, Total=870 [2021-06-16 21:29:11,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:29:11,087 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:29:11,087 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) [2021-06-16 21:29:11,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:29:11,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:29:11,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:29:11,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:29:11,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-16 21:29:11,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-16 21:29:11,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-16 21:29:11,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-16 21:29:11,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:30:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:30:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:30:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:30:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:30:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 21:30:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-16 21:30:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 21:30:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-16 21:30:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-16 21:30:11,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-06-16 21:30:11,163 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:30:11,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:30:11,163 INFO L82 PathProgramCache]: Analyzing trace with hash -127394481, now seen corresponding path program 6 times [2021-06-16 21:30:11,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:30:11,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308421759] [2021-06-16 21:30:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:30:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:30:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:30:11,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:30:11,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308421759] [2021-06-16 21:30:11,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308421759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:30:11,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500748342] [2021-06-16 21:30:11,292 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 [2021-06-16 21:30:11,333 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-16 21:30:11,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:30:11,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-16 21:30:11,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:30:11,571 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:30:11,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500748342] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:30:11,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:30:11,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-06-16 21:30:11,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548745474] [2021-06-16 21:30:11,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-16 21:30:11,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:30:11,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-16 21:30:11,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-06-16 21:30:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:30:11,573 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:30:11,574 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) [2021-06-16 21:30:11,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:30:11,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:30:11,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:30:11,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:30:11,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-16 21:30:11,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-16 21:30:11,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-16 21:30:11,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-16 21:30:11,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-16 21:30:11,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:30:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 21:30:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:30:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:30:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 21:30:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 21:30:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-16 21:30:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 21:30:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-16 21:30:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-16 21:30:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-16 21:30:11,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:30:11,929 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:30:11,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:30:11,929 INFO L82 PathProgramCache]: Analyzing trace with hash 726661421, now seen corresponding path program 7 times [2021-06-16 21:30:11,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:30:11,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361724024] [2021-06-16 21:30:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:30:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:30:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:30:12,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:30:12,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361724024] [2021-06-16 21:30:12,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361724024] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:30:12,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939342213] [2021-06-16 21:30:12,649 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 [2021-06-16 21:30:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:30:12,684 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 64 conjunts are in the unsatisfiable core [2021-06-16 21:30:12,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:30:13,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:30:13,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:30:13,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:30:13,512 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 [2021-06-16 21:30:13,515 INFO L550 ElimStorePlain]: Start of recursive call 2: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-06-16 21:30:13,524 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:30:13,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:30:13,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:30:13,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:30:13,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:30:13,533 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 [2021-06-16 21:30:13,536 INFO L550 ElimStorePlain]: Start of recursive call 3: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-06-16 21:30:13,545 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:30:13,668 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-06-16 21:30:13,668 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:30:13,669 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 [2021-06-16 21:30:14,118 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 192 [2021-06-16 21:30:15,211 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 239 DAG size of output: 216 [2021-06-16 21:30:17,926 WARN L205 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-06-16 21:30:20,747 WARN L205 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-06-16 21:30:23,661 WARN L205 SmtUtils]: Spent 2.91 s on a formula simplification. DAG size of input: 292 DAG size of output: 262 [2021-06-16 21:30:33,588 WARN L205 SmtUtils]: Spent 9.92 s on a formula simplification. DAG size of input: 258 DAG size of output: 270 [2021-06-16 21:30:43,381 WARN L205 SmtUtils]: Spent 9.79 s on a formula simplification. DAG size of input: 253 DAG size of output: 274 [2021-06-16 21:30:53,155 WARN L205 SmtUtils]: Spent 9.77 s on a formula simplification. DAG size of input: 248 DAG size of output: 266 [2021-06-16 21:30:55,831 WARN L205 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 240 DAG size of output: 240 [2021-06-16 21:30:56,104 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 145 [2021-06-16 21:30:57,186 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2021-06-16 21:30:57,612 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2021-06-16 21:30:57,878 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 155 [2021-06-16 21:30:58,306 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 167 [2021-06-16 21:30:58,936 WARN L205 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 161 [2021-06-16 21:31:00,123 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 326 DAG size of output: 308 [2021-06-16 21:31:03,359 WARN L205 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 426 DAG size of output: 391 [2021-06-16 21:31:03,510 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 151 [2021-06-16 21:31:11,570 WARN L205 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 513 DAG size of output: 465 [2021-06-16 21:31:31,150 WARN L205 SmtUtils]: Spent 19.58 s on a formula simplification. DAG size of input: 595 DAG size of output: 525 [2021-06-16 21:32:21,304 WARN L205 SmtUtils]: Spent 50.15 s on a formula simplification. DAG size of input: 694 DAG size of output: 619 [2021-06-16 21:34:21,878 WARN L205 SmtUtils]: Spent 2.01 m on a formula simplification. DAG size of input: 782 DAG size of output: 704 [2021-06-16 21:39:08,485 WARN L205 SmtUtils]: Spent 4.78 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