/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-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 23:12:27,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 23:12:27,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 23:12:27,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-13 23:12:27,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-13 23:12:27,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-13 23:12:27,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-13 23:12:27,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-13 23:12:27,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-13 23:12:27,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-13 23:12:27,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-13 23:12:27,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-13 23:12:27,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-13 23:12:27,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-13 23:12:27,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-13 23:12:27,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-13 23:12:27,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-13 23:12:27,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-13 23:12:27,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-13 23:12:27,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-13 23:12:27,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-13 23:12:27,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-13 23:12:27,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-13 23:12:27,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-13 23:12:27,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-13 23:12:27,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 23:12:27,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 23:12:27,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 23:12:27,382 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 [2021-07-13 23:12:27,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 23:12:27,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 23:12:27,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 23:12:27,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 23:12:27,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 23:12:27,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 23:12:27,423 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 23:12:27,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 23:12:27,423 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 23:12:27,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 23:12:27,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 23:12:27,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 23:12:27,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 23:12:27,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 23:12:27,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 23:12:27,424 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 23:12:27,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 23:12:27,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 23:12:27,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 23:12:27,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 23:12:27,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 23:12:27,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 23:12:27,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 23:12:27,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 23:12:27,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 23:12:27,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 23:12:27,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 23:12:27,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 23:12:27,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 23:12:27,425 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 23:12:27,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-13 23:12:27,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 23:12:27,425 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 23:12:27,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 23:12:27,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 23:12:27,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 23:12:27,683 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 23:12:27,685 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 23:12:27,685 INFO L432 ainManager$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 [2021-07-13 23:12:27,686 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' [2021-07-13 23:12:27,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 23:12:27,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 23:12:27,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 23:12:27,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 23:12:27,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 23:12:27,716 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 13.07 11:12:27" (1/1) ... [2021-07-13 23:12:27,722 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 13.07 11:12:27" (1/1) ... [2021-07-13 23:12:27,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 23:12:27,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 23:12:27,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 23:12:27,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 23:12:27,740 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 13.07 11:12:27" (1/1) ... [2021-07-13 23:12:27,740 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 13.07 11:12:27" (1/1) ... [2021-07-13 23:12:27,742 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 13.07 11:12:27" (1/1) ... [2021-07-13 23:12:27,742 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 13.07 11:12:27" (1/1) ... [2021-07-13 23:12:27,744 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 13.07 11:12:27" (1/1) ... [2021-07-13 23:12:27,746 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 13.07 11:12:27" (1/1) ... [2021-07-13 23:12:27,746 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 13.07 11:12:27" (1/1) ... [2021-07-13 23:12:27,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 23:12:27,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 23:12:27,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 23:12:27,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 23:12:27,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:12:27" (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 [2021-07-13 23:12:27,803 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 23:12:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 23:12:27,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 23:12:27,804 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 23:12:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 23:12:27,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 23:12:27,804 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 23:12:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 23:12:27,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 23:12:27,804 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-13 23:12:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-13 23:12:27,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-13 23:12:27,805 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 23:12:28,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 23:12:28,008 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-13 23:12:28,010 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:12:28 BoogieIcfgContainer [2021-07-13 23:12:28,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 23:12:28,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 23:12:28,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 23:12:28,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 23:12:28,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 11:12:27" (1/2) ... [2021-07-13 23:12:28,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250d91ac and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:12:28, skipping insertion in model container [2021-07-13 23:12:28,014 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 13.07 11:12:28" (2/2) ... [2021-07-13 23:12:28,015 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-07-13 23:12:28,019 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 23:12:28,019 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 23:12:28,019 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 23:12:28,019 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 23:12:28,108 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-13 23:12:28,123 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 [2021-07-13 23:12:28,172 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 23:12:28,172 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 23:12:28,172 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 23:12:28,172 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 23:12:28,172 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 23:12:28,173 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 23:12:28,173 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 23:12:28,173 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 23:12:28,186 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2021-07-13 23:12:28,211 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) [2021-07-13 23:12:28,222 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:12:28,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:12:28,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1721861629, now seen corresponding path program 1 times [2021-07-13 23:12:28,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:12:28,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536458342] [2021-07-13 23:12:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:12:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:12:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 23:12:28,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:12:28,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536458342] [2021-07-13 23:12:28,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536458342] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:12:28,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583009115] [2021-07-13 23:12:28,438 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 [2021-07-13 23:12:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:12:28,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-13 23:12:28,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:12:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 23:12:28,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583009115] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:12:28,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:12:28,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-07-13 23:12:28,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380352360] [2021-07-13 23:12:28,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 23:12:28,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:12:28,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 23:12:28,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-13 23:12:28,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:12:28,663 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:12:28,663 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) [2021-07-13 23:12:28,663 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:12:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 23:12:28,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-13 23:12:28,965 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:12:28,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:12:28,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2011010847, now seen corresponding path program 2 times [2021-07-13 23:12:28,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:12:28,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009306677] [2021-07-13 23:12:28,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:12:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:12:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:12:29,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:12:29,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009306677] [2021-07-13 23:12:29,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009306677] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:12:29,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708652235] [2021-07-13 23:12:29,326 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 [2021-07-13 23:12:29,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 23:12:29,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 23:12:29,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-07-13 23:12:29,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:12:29,650 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:12:29,650 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 [2021-07-13 23:12:29,819 INFO L550 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-07-13 23:12:29,838 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:12:29,850 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:12:29,851 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 [2021-07-13 23:12:29,935 INFO L550 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-07-13 23:12:29,956 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:12:29,984 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:12:29,984 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 [2021-07-13 23:12:30,014 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-07-13 23:12:30,059 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:12:30,157 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. [2021-07-13 23:12:30,157 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:54, output treesize:84 [2021-07-13 23:12:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:12:30,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708652235] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:12:30,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:12:30,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-13 23:12:30,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364834827] [2021-07-13 23:12:30,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 23:12:30,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:12:30,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 23:12:30,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-07-13 23:12:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:12:30,237 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:12:30,237 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) [2021-07-13 23:12:30,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-13 23:12:30,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:12:30,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 23:12:30,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 23:12:31,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 23:12:31,215 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:12:31,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:12:31,216 INFO L82 PathProgramCache]: Analyzing trace with hash -788830179, now seen corresponding path program 3 times [2021-07-13 23:12:31,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:12:31,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541982645] [2021-07-13 23:12:31,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:12:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:12:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:12:31,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:12:31,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541982645] [2021-07-13 23:12:31,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541982645] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:12:31,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084137746] [2021-07-13 23:12:31,285 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 [2021-07-13 23:12:31,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-13 23:12:31,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 23:12:31,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-13 23:12:31,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:12:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:12:31,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084137746] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:12:31,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:12:31,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-07-13 23:12:31,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297250425] [2021-07-13 23:12:31,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 23:12:31,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:12:31,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 23:12:31,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-07-13 23:12:31,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:12:31,471 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:12:31,472 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) [2021-07-13 23:12:31,472 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-13 23:12:31,472 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-13 23:12:31,472 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:12:31,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 23:12:31,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 23:12:31,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 23:12:31,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 23:12:31,862 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:12:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:12:31,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1992729055, now seen corresponding path program 4 times [2021-07-13 23:12:31,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:12:31,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045442706] [2021-07-13 23:12:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:12:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:12:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-13 23:12:31,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:12:31,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045442706] [2021-07-13 23:12:31,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045442706] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:12:31,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613095652] [2021-07-13 23:12:31,940 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 [2021-07-13 23:12:31,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 23:12:31,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 23:12:31,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-13 23:12:31,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:12:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-13 23:12:32,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613095652] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:12:32,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 23:12:32,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 18 [2021-07-13 23:12:32,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974652453] [2021-07-13 23:12:32,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 23:12:32,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:12:32,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 23:12:32,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-07-13 23:12:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:12:32,082 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 23:12:32,082 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) [2021-07-13 23:12:32,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-13 23:12:32,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-13 23:12:32,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-13 23:12:32,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:12:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 23:12:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 23:12:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 23:12:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-13 23:12:32,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-07-13 23:12:32,450 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 23:12:32,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:12:32,450 INFO L82 PathProgramCache]: Analyzing trace with hash -523128931, now seen corresponding path program 5 times [2021-07-13 23:12:32,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:12:32,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322693464] [2021-07-13 23:12:32,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:12:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:12:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:12:33,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:12:33,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322693464] [2021-07-13 23:12:33,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322693464] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 23:12:33,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302392606] [2021-07-13 23:12:33,227 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 [2021-07-13 23:12:33,265 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-07-13 23:12:33,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 23:12:33,266 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 56 conjunts are in the unsatisfiable core [2021-07-13 23:12:33,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 23:12:44,114 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-07-13 23:12:45,782 WARN L205 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 56 [2021-07-13 23:12:46,034 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-07-13 23:12:46,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-13 23:12:46,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-13 23:12:46,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 23:12:46,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-13 23:12:46,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-13 23:12:46,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-13 23:12:46,083 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 [2021-07-13 23:12:46,086 INFO L550 ElimStorePlain]: Start of recursive call 2: 6 dim-0 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2021-07-13 23:12:46,096 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:12:46,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-13 23:12:46,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-13 23:12:46,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 23:12:46,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-13 23:12:46,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-13 23:12:46,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-13 23:12:46,103 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 [2021-07-13 23:12:46,106 INFO L550 ElimStorePlain]: Start of recursive call 3: 6 dim-0 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2021-07-13 23:12:46,115 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:12:46,190 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:12:46,190 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 [2021-07-13 23:12:46,428 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 159 [2021-07-13 23:12:46,884 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 180 [2021-07-13 23:12:47,289 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 180 [2021-07-13 23:12:47,731 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 197 [2021-07-13 23:12:49,300 WARN L205 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 196 DAG size of output: 211 [2021-07-13 23:12:49,712 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 188 [2021-07-13 23:12:50,324 WARN L205 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 187 [2021-07-13 23:12:50,482 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 164 [2021-07-13 23:12:50,778 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 187 [2021-07-13 23:12:51,054 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 228 [2021-07-13 23:12:51,462 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 131 [2021-07-13 23:12:52,400 WARN L205 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 285 [2021-07-13 23:12:54,898 WARN L205 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 405 DAG size of output: 347 [2021-07-13 23:12:55,050 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 140 [2021-07-13 23:13:01,284 WARN L205 SmtUtils]: Spent 6.23 s on a formula simplification. DAG size of input: 478 DAG size of output: 410 [2021-07-13 23:13:16,773 WARN L205 SmtUtils]: Spent 15.49 s on a formula simplification. DAG size of input: 545 DAG size of output: 477 [2021-07-13 23:13:32,294 WARN L205 SmtUtils]: Spent 15.52 s on a formula simplification. DAG size of input: 545 DAG size of output: 477 [2021-07-13 23:13:48,781 WARN L205 SmtUtils]: Spent 16.47 s on a formula simplification. DAG size of input: 557 DAG size of output: 489 [2021-07-13 23:14:03,584 WARN L205 SmtUtils]: Spent 14.80 s on a formula simplification. DAG size of input: 476 DAG size of output: 479 [2021-07-13 23:14:24,957 WARN L205 SmtUtils]: Spent 21.37 s on a formula simplification. DAG size of input: 413 DAG size of output: 473 [2021-07-13 23:14:30,859 WARN L205 SmtUtils]: Spent 5.90 s on a formula simplification. DAG size of input: 405 DAG size of output: 408 [2021-07-13 23:14:33,157 WARN L205 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 345 DAG size of output: 348 [2021-07-13 23:14:33,997 WARN L205 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 289 [2021-07-13 23:14:34,512 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 166 [2021-07-13 23:14:34,751 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 233 [2021-07-13 23:14:35,448 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 284 [2021-07-13 23:14:36,418 WARN L205 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 413 DAG size of output: 370 [2021-07-13 23:14:39,257 WARN L205 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 520 DAG size of output: 464 [2021-07-13 23:14:39,809 WARN L205 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 172 [2021-07-13 23:14:39,949 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 145 [2021-07-13 23:14:40,164 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 130 [2021-07-13 23:14:40,328 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 163 [2021-07-13 23:14:40,974 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 214 [2021-07-13 23:14:42,396 WARN L205 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 270 DAG size of output: 235 [2021-07-13 23:14:50,896 WARN L205 SmtUtils]: Spent 8.50 s on a formula simplification. DAG size of input: 671 DAG size of output: 593 [2021-07-13 23:14:51,047 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 156 [2021-07-13 23:14:51,250 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 125 [2021-07-13 23:14:51,546 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 147 [2021-07-13 23:14:52,297 WARN L205 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 172 [2021-07-13 23:14:54,196 WARN L205 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 213 DAG size of output: 193 [2021-07-13 23:14:54,572 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2021-07-13 23:14:54,869 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2021-07-13 23:14:55,221 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 170 [2021-07-13 23:14:55,933 WARN L205 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 230 [2021-07-13 23:14:57,881 WARN L205 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 278 DAG size of output: 276 [2021-07-13 23:15:05,116 WARN L205 SmtUtils]: Spent 7.23 s on a formula simplification. DAG size of input: 425 DAG size of output: 407 [2021-07-13 23:15:33,783 WARN L205 SmtUtils]: Spent 28.66 s on a formula simplification. DAG size of input: 953 DAG size of output: 860 [2021-07-13 23:16:48,726 WARN L205 SmtUtils]: Spent 1.25 m on a formula simplification. DAG size of input: 1162 DAG size of output: 1068 [2021-07-13 23:16:49,932 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 173 DAG size of output: 197 [2021-07-13 23:16:51,115 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 168 DAG size of output: 192 [2021-07-13 23:16:51,439 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 160 [2021-07-13 23:16:51,566 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 141 [2021-07-13 23:16:51,853 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 150 [2021-07-13 23:16:52,442 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 210 [2021-07-13 23:16:52,810 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-13 23:16:53,405 WARN L205 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 143 [2021-07-13 23:16:55,311 WARN L205 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 320 DAG size of output: 281 [2021-07-13 23:17:00,278 WARN L205 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 378 DAG size of output: 336 [2021-07-13 23:17:12,320 WARN L205 SmtUtils]: Spent 12.04 s on a formula simplification. DAG size of input: 385 DAG size of output: 343 [2021-07-13 23:20:22,944 WARN L205 SmtUtils]: Spent 3.18 m on a formula simplification. DAG size of input: 1386 DAG size of output: 1263 [2021-07-13 23:23:33,617 WARN L205 SmtUtils]: Spent 3.18 m on a formula simplification. DAG size of input: 1386 DAG size of output: 1263 [2021-07-13 23:26:48,540 WARN L205 SmtUtils]: Spent 3.25 m on a formula simplification. DAG size of input: 1394 DAG size of output: 1271 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown