/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-None-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 21:06:50,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 21:06:50,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 21:06:50,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 21:06:50,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 21:06:50,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 21:06:50,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 21:06:50,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 21:06:50,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 21:06:50,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 21:06:50,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 21:06:50,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 21:06:50,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 21:06:50,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 21:06:50,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 21:06:50,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 21:06:50,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 21:06:50,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 21:06:50,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 21:06:50,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 21:06:50,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 21:06:50,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 21:06:50,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 21:06:50,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 21:06:50,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 21:06:50,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 21:06:50,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 21:06:50,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 21:06:50,353 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-None-NoLbe.epf [2021-07-09 21:06:50,378 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 21:06:50,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 21:06:50,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 21:06:50,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 21:06:50,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 21:06:50,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 21:06:50,381 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 21:06:50,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 21:06:50,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 21:06:50,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 21:06:50,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 21:06:50,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 21:06:50,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 21:06:50,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 21:06:50,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 21:06:50,382 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 21:06:50,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 21:06:50,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 21:06:50,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 21:06:50,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 21:06:50,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 21:06:50,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 21:06:50,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 21:06:50,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 21:06:50,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 21:06:50,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 21:06:50,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 21:06:50,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 21:06:50,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 21:06:50,384 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 21:06:50,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-09 21:06:50,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 21:06:50,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 21:06:50,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 21:06:50,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 21:06:50,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 21:06:50,642 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 21:06:50,643 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 21:06:50,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl [2021-07-09 21:06:50,643 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl' [2021-07-09 21:06:50,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 21:06:50,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 21:06:50,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 21:06:50,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 21:06:50,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 21:06:50,679 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 09.07 09:06:50" (1/1) ... [2021-07-09 21:06:50,684 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 09.07 09:06:50" (1/1) ... [2021-07-09 21:06:50,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 21:06:50,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 21:06:50,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 21:06:50,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 21:06:50,697 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 09.07 09:06:50" (1/1) ... [2021-07-09 21:06:50,697 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 09.07 09:06:50" (1/1) ... [2021-07-09 21:06:50,698 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 09.07 09:06:50" (1/1) ... [2021-07-09 21:06:50,698 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 09.07 09:06:50" (1/1) ... [2021-07-09 21:06:50,700 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 09.07 09:06:50" (1/1) ... [2021-07-09 21:06:50,702 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 09.07 09:06:50" (1/1) ... [2021-07-09 21:06:50,703 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 09.07 09:06:50" (1/1) ... [2021-07-09 21:06:50,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 21:06:50,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 21:06:50,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 21:06:50,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 21:06:50,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:06:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 21:06:50,776 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 21:06:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 21:06:50,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 21:06:50,776 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 21:06:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 21:06:50,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 21:06:50,777 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 21:06:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 21:06:50,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 21:06:50,777 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 21:06:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 21:06:50,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 21:06:50,778 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 21:06:51,012 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 21:06:51,012 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 21:06:51,013 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 09:06:51 BoogieIcfgContainer [2021-07-09 21:06:51,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 21:06:51,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 21:06:51,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 21:06:51,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 21:06:51,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:06:50" (1/2) ... [2021-07-09 21:06:51,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba96ffe and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 09:06:51, skipping insertion in model container [2021-07-09 21:06:51,017 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 09.07 09:06:51" (2/2) ... [2021-07-09 21:06:51,018 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-07-09 21:06:51,021 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 21:06:51,021 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 21:06:51,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 21:06:51,022 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 21:06:51,061 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-09 21:06:51,075 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-09 21:06:51,124 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 21:06:51,125 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 21:06:51,125 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 21:06:51,126 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 21:06:51,126 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 21:06:51,126 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 21:06:51,126 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 21:06:51,126 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 21:06:51,138 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2021-07-09 21:06:51,161 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 112 states, 111 states have (on average 2.810810810810811) internal successors, (312), 111 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:06:51,174 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 21:06:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:06:51,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1721861629, now seen corresponding path program 1 times [2021-07-09 21:06:51,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:06:51,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169885404] [2021-07-09 21:06:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:06:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:06:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 21:06:51,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:06:51,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169885404] [2021-07-09 21:06:51,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169885404] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:06:51,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050886783] [2021-07-09 21:06:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:06:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:06:51,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-09 21:06:51,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 21:06:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 21:06:51,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050886783] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:06:51,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 21:06:51,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-07-09 21:06:51,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852027119] [2021-07-09 21:06:51,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 21:06:51,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:06:51,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 21:06:51,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-09 21:06:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:06:51,559 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 21:06:51,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:06:51,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:06:51,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 21:06:51,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-09 21:06:51,864 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 21:06:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:06:51,864 INFO L82 PathProgramCache]: Analyzing trace with hash -2011010847, now seen corresponding path program 2 times [2021-07-09 21:06:51,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:06:51,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116985755] [2021-07-09 21:06:51,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:06:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:06:52,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:06:52,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:06:52,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116985755] [2021-07-09 21:06:52,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116985755] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:06:52,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3036792] [2021-07-09 21:06:52,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:06:52,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 21:06:52,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 21:06:52,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-07-09 21:06:52,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 21:06:52,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:06:52,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 51 [2021-07-09 21:06:52,627 INFO L550 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-07-09 21:06:52,645 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:06:52,657 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:06:52,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 43 [2021-07-09 21:06:52,757 INFO L550 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-07-09 21:06:52,779 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:06:52,803 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:06:52,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 47 [2021-07-09 21:06:52,820 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-07-09 21:06:52,871 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:06:52,974 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-07-09 21:06:52,974 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:54, output treesize:84 [2021-07-09 21:06:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:06:53,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3036792] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:06:53,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 21:06:53,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-09 21:06:53,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355441130] [2021-07-09 21:06:53,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 21:06:53,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:06:53,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 21:06:53,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-07-09 21:06:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:06:53,052 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 21:06:53,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:06:53,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-09 21:06:53,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:06:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 21:06:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 21:06:54,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:06:54,013 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 21:06:54,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:06:54,013 INFO L82 PathProgramCache]: Analyzing trace with hash -788830179, now seen corresponding path program 3 times [2021-07-09 21:06:54,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:06:54,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628732681] [2021-07-09 21:06:54,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:06:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:06:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:06:54,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:06:54,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628732681] [2021-07-09 21:06:54,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628732681] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:06:54,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800011914] [2021-07-09 21:06:54,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:06:54,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-09 21:06:54,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 21:06:54,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-09 21:06:54,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 21:06:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:06:54,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800011914] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:06:54,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 21:06:54,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-07-09 21:06:54,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141546208] [2021-07-09 21:06:54,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 21:06:54,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:06:54,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 21:06:54,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-07-09 21:06:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:06:54,270 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 21:06:54,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 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) [2021-07-09 21:06:54,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-09 21:06:54,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-09 21:06:54,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:06:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 21:06:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 21:06:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 21:06:54,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:06:54,677 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 21:06:54,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:06:54,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1992729055, now seen corresponding path program 4 times [2021-07-09 21:06:54,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:06:54,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940350887] [2021-07-09 21:06:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:06:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:06:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 21:06:54,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:06:54,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940350887] [2021-07-09 21:06:54,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940350887] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:06:54,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212024124] [2021-07-09 21:06:54,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:06:54,805 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-09 21:06:54,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 21:06:54,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-09 21:06:54,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 21:06:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-09 21:06:54,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212024124] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:06:54,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 21:06:54,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 18 [2021-07-09 21:06:54,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71674346] [2021-07-09 21:06:54,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 21:06:54,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:06:54,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 21:06:54,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-07-09 21:06:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:06:54,910 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 21:06:54,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:06:54,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-09 21:06:54,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-09 21:06:54,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-09 21:06:54,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:06:55,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 21:06:55,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 21:06:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 21:06:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-09 21:06:55,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-07-09 21:06:55,302 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 21:06:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:06:55,303 INFO L82 PathProgramCache]: Analyzing trace with hash -523128931, now seen corresponding path program 5 times [2021-07-09 21:06:55,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:06:55,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577408997] [2021-07-09 21:06:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:06:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:06:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:06:56,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:06:56,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577408997] [2021-07-09 21:06:56,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577408997] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:06:56,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405460946] [2021-07-09 21:06:56,039 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:06:56,076 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-07-09 21:06:56,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 21:06:56,077 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 56 conjunts are in the unsatisfiable core [2021-07-09 21:06:56,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 21:07:06,406 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-07-09 21:07:08,033 WARN L205 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 56 [2021-07-09 21:07:09,285 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 48 [2021-07-09 21:07:09,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:07:09,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:07:09,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 21:07:09,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:07:09,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:07:09,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:07:09,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 91 [2021-07-09 21:07:09,319 INFO L550 ElimStorePlain]: Start of recursive call 2: 6 dim-0 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2021-07-09 21:07:09,329 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:07:09,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:07:09,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:07:09,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 21:07:09,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:07:09,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:07:09,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:07:09,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-07-09 21:07:09,341 INFO L550 ElimStorePlain]: Start of recursive call 3: 6 dim-0 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2021-07-09 21:07:09,349 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:07:09,429 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:07:09,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 67 treesize of output 199 [2021-07-09 21:07:09,667 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 159 [2021-07-09 21:07:10,132 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 180 [2021-07-09 21:07:10,682 WARN L205 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 180 [2021-07-09 21:07:11,139 WARN L205 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 197 [2021-07-09 21:07:12,790 WARN L205 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 196 DAG size of output: 211 [2021-07-09 21:07:13,224 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 188 [2021-07-09 21:07:13,840 WARN L205 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 187 [2021-07-09 21:07:13,997 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 164 [2021-07-09 21:07:14,591 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 228 [2021-07-09 21:07:15,010 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 131 [2021-07-09 21:07:15,948 WARN L205 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 285 [2021-07-09 21:07:18,505 WARN L205 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 405 DAG size of output: 347 [2021-07-09 21:07:18,668 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 140 [2021-07-09 21:07:25,108 WARN L205 SmtUtils]: Spent 6.44 s on a formula simplification. DAG size of input: 478 DAG size of output: 410 [2021-07-09 21:07:41,178 WARN L205 SmtUtils]: Spent 16.07 s on a formula simplification. DAG size of input: 545 DAG size of output: 477 [2021-07-09 21:07:57,161 WARN L205 SmtUtils]: Spent 15.98 s on a formula simplification. DAG size of input: 545 DAG size of output: 477 [2021-07-09 21:08:14,337 WARN L205 SmtUtils]: Spent 17.17 s on a formula simplification. DAG size of input: 557 DAG size of output: 489 [2021-07-09 21:08:29,783 WARN L205 SmtUtils]: Spent 15.44 s on a formula simplification. DAG size of input: 476 DAG size of output: 479 [2021-07-09 21:08:52,108 WARN L205 SmtUtils]: Spent 22.31 s on a formula simplification. DAG size of input: 413 DAG size of output: 473 [2021-07-09 21:08:58,282 WARN L205 SmtUtils]: Spent 6.16 s on a formula simplification. DAG size of input: 405 DAG size of output: 408 [2021-07-09 21:09:00,726 WARN L205 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 345 DAG size of output: 348 [2021-07-09 21:09:01,609 WARN L205 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 289 [2021-07-09 21:09:02,138 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 166 [2021-07-09 21:09:02,386 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 233 [2021-07-09 21:09:03,105 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 284 [2021-07-09 21:09:04,132 WARN L205 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 413 DAG size of output: 370 [2021-07-09 21:09:07,081 WARN L205 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 520 DAG size of output: 464 [2021-07-09 21:09:07,651 WARN L205 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 172 [2021-07-09 21:09:07,802 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 145 [2021-07-09 21:09:08,011 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 130 [2021-07-09 21:09:08,191 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 163 [2021-07-09 21:09:08,871 WARN L205 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 214 [2021-07-09 21:09:10,348 WARN L205 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 270 DAG size of output: 235 [2021-07-09 21:09:19,157 WARN L205 SmtUtils]: Spent 8.81 s on a formula simplification. DAG size of input: 671 DAG size of output: 593 [2021-07-09 21:09:19,319 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 156 [2021-07-09 21:09:19,548 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 125 [2021-07-09 21:09:19,864 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 147 [2021-07-09 21:09:20,651 WARN L205 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 172 [2021-07-09 21:09:22,632 WARN L205 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 213 DAG size of output: 193 [2021-07-09 21:09:23,022 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2021-07-09 21:09:23,319 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2021-07-09 21:09:23,683 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 170 [2021-07-09 21:09:24,382 WARN L205 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 230 [2021-07-09 21:09:26,420 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 278 DAG size of output: 276 [2021-07-09 21:09:33,919 WARN L205 SmtUtils]: Spent 7.50 s on a formula simplification. DAG size of input: 425 DAG size of output: 407 [2021-07-09 21:10:03,538 WARN L205 SmtUtils]: Spent 29.62 s on a formula simplification. DAG size of input: 953 DAG size of output: 860 [2021-07-09 21:11:21,399 WARN L205 SmtUtils]: Spent 1.30 m on a formula simplification. DAG size of input: 1162 DAG size of output: 1068 [2021-07-09 21:11:22,668 WARN L205 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 173 DAG size of output: 197 [2021-07-09 21:11:23,912 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 168 DAG size of output: 192 [2021-07-09 21:11:24,261 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 160 [2021-07-09 21:11:24,389 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 141 [2021-07-09 21:11:24,697 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 150 [2021-07-09 21:11:25,314 WARN L205 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 210 [2021-07-09 21:11:25,695 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-09 21:11:26,322 WARN L205 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 143 [2021-07-09 21:11:28,299 WARN L205 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 320 DAG size of output: 281 [2021-07-09 21:11:33,452 WARN L205 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 378 DAG size of output: 336 [2021-07-09 21:11:45,921 WARN L205 SmtUtils]: Spent 12.47 s on a formula simplification. DAG size of input: 385 DAG size of output: 343 [2021-07-09 21:15:03,662 WARN L205 SmtUtils]: Spent 3.30 m on a formula simplification. DAG size of input: 1386 DAG size of output: 1263 [2021-07-09 21:18:22,185 WARN L205 SmtUtils]: Spent 3.31 m on a formula simplification. DAG size of input: 1386 DAG size of output: 1263 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown