/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Random42.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 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-14 05:36:40,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 05:36:40,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 05:36:40,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-14 05:36:40,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-14 05:36:40,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-14 05:36:40,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-14 05:36:40,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-14 05:36:40,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-14 05:36:40,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-14 05:36:40,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-14 05:36:40,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-14 05:36:40,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-14 05:36:40,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-14 05:36:40,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-14 05:36:40,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-14 05:36:40,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-14 05:36:40,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-14 05:36:40,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-14 05:36:40,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-14 05:36:40,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Random42.epf [2021-06-14 05:36:40,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 05:36:40,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 05:36:40,949 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 05:36:40,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 05:36:40,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 05:36:40,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 05:36:40,951 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 05:36:40,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 05:36:40,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 05:36:40,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 05:36:40,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 05:36:40,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 05:36:40,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 05:36:40,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 05:36:40,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 05:36:40,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 05:36:40,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 05:36:40,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 05:36:40,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 05:36:40,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 05:36:40,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 05:36:40,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 05:36:40,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 05:36:40,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 05:36:40,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 05:36:40,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 05:36:40,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 05:36:40,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 05:36:40,953 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-14 05:36:40,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 05:36:40,953 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 05:36:40,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 05:36:40,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 05:36:40,954 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-14 05:36:40,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-14 05:36:40,954 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 05:36:41,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 05:36:41,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 05:36:41,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 05:36:41,177 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 05:36:41,178 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 05:36:41,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl [2021-06-14 05:36:41,179 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl' [2021-06-14 05:36:41,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 05:36:41,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 05:36:41,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 05:36:41,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 05:36:41,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 05:36:41,267 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 14.06 05:36:41" (1/1) ... [2021-06-14 05:36:41,273 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 14.06 05:36:41" (1/1) ... [2021-06-14 05:36:41,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 05:36:41,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 05:36:41,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 05:36:41,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 05:36:41,283 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 14.06 05:36:41" (1/1) ... [2021-06-14 05:36:41,284 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 14.06 05:36:41" (1/1) ... [2021-06-14 05:36:41,286 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 14.06 05:36:41" (1/1) ... [2021-06-14 05:36:41,286 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 14.06 05:36:41" (1/1) ... [2021-06-14 05:36:41,289 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 14.06 05:36:41" (1/1) ... [2021-06-14 05:36:41,293 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 14.06 05:36:41" (1/1) ... [2021-06-14 05:36:41,294 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 14.06 05:36:41" (1/1) ... [2021-06-14 05:36:41,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 05:36:41,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 05:36:41,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 05:36:41,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 05:36:41,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 05:36:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 05:36:41,364 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-14 05:36:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-14 05:36:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-14 05:36:41,364 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-14 05:36:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-14 05:36:41,365 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-14 05:36:41,365 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 05:36:41,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 05:36:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 05:36:41,366 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-14 05:36:41,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-14 05:36:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-14 05:36:41,367 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-14 05:36:41,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 05:36:41,554 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-14 05:36:41,555 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 05:36:41 BoogieIcfgContainer [2021-06-14 05:36:41,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 05:36:41,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 05:36:41,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 05:36:41,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 05:36:41,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 05:36:41" (1/2) ... [2021-06-14 05:36:41,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3e7dcb and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 05:36:41, skipping insertion in model container [2021-06-14 05:36:41,559 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 14.06 05:36:41" (2/2) ... [2021-06-14 05:36:41,559 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-06-14 05:36:41,563 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 05:36:41,563 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 05:36:41,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 05:36:41,563 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 05:36:41,584 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-14 05:36:41,597 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-14 05:36:41,639 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 05:36:41,640 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 05:36:41,642 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 05:36:41,642 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 05:36:41,643 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 05:36:41,643 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 05:36:41,643 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 05:36:41,643 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-14 05:36:41,678 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 05:36:41,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 05:36:41,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1195495559, now seen corresponding path program 1 times [2021-06-14 05:36:41,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 05:36:41,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716932002] [2021-06-14 05:36:41,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 05:36:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 05:36:41,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 05:36:41,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 05:36:41,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716932002] [2021-06-14 05:36:41,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716932002] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 05:36:41,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 05:36:41,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-14 05:36:41,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927716143] [2021-06-14 05:36:41,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-14 05:36:41,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 05:36:41,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-14 05:36:41,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-14 05:36:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:41,796 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 05:36:41,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 05:36:41,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:41,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-14 05:36:41,817 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 05:36:41,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 05:36:41,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1677874473, now seen corresponding path program 1 times [2021-06-14 05:36:41,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 05:36:41,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347680508] [2021-06-14 05:36:41,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 05:36:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 05:36:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-14 05:36:41,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 05:36:41,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347680508] [2021-06-14 05:36:41,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347680508] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 05:36:41,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 05:36:41,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-14 05:36:41,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626394610] [2021-06-14 05:36:41,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-14 05:36:41,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 05:36:41,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-14 05:36:41,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-14 05:36:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:41,886 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 05:36:41,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 05:36:41,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:41,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:41,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-14 05:36:41,930 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 05:36:41,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 05:36:41,931 INFO L82 PathProgramCache]: Analyzing trace with hash -883932369, now seen corresponding path program 1 times [2021-06-14 05:36:41,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 05:36:41,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923473911] [2021-06-14 05:36:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 05:36:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 05:36:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-14 05:36:41,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 05:36:41,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923473911] [2021-06-14 05:36:41,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923473911] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 05:36:41,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 05:36:41,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-14 05:36:41,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120020903] [2021-06-14 05:36:41,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-14 05:36:41,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 05:36:41,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-14 05:36:41,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-14 05:36:41,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:41,955 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 05:36:41,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 05:36:41,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:41,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:41,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 05:36:42,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-14 05:36:42,001 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 05:36:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 05:36:42,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1381480519, now seen corresponding path program 1 times [2021-06-14 05:36:42,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 05:36:42,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606885548] [2021-06-14 05:36:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 05:36:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 05:36:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 05:36:42,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 05:36:42,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606885548] [2021-06-14 05:36:42,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606885548] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 05:36:42,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106134453] [2021-06-14 05:36:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 05:36:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 05:36:42,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-14 05:36:42,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 05:36:42,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-06-14 05:36:42,436 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-14 05:36:42,442 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 05:36:42,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-06-14 05:36:42,450 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-14 05:36:42,457 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 05:36:42,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-14 05:36:42,464 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-14 05:36:42,468 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 05:36:42,471 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-14 05:36:42,472 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:31, output treesize:3 [2021-06-14 05:36:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 05:36:42,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106134453] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 05:36:42,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 05:36:42,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-14 05:36:42,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796162320] [2021-06-14 05:36:42,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-14 05:36:42,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 05:36:42,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-14 05:36:42,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-14 05:36:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:42,512 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 05:36:42,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 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) [2021-06-14 05:36:42,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:42,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:42,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 05:36:42,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 05:36:42,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 05:36:42,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 05:36:42,865 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 05:36:42,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 05:36:42,866 INFO L82 PathProgramCache]: Analyzing trace with hash -18318057, now seen corresponding path program 2 times [2021-06-14 05:36:42,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 05:36:42,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81980785] [2021-06-14 05:36:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 05:36:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 05:36:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 05:36:42,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 05:36:42,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81980785] [2021-06-14 05:36:42,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81980785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 05:36:42,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428106178] [2021-06-14 05:36:42,924 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) [2021-06-14 05:36:42,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 05:36:42,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 05:36:42,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-14 05:36:42,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 05:36:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 05:36:43,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428106178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 05:36:43,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 05:36:43,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-14 05:36:43,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880966919] [2021-06-14 05:36:43,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-14 05:36:43,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 05:36:43,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-14 05:36:43,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-14 05:36:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:43,034 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 05:36:43,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 05:36:43,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:43,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:43,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 05:36:43,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 05:36:43,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 05:36:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 05:36:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-14 05:36:43,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 05:36:43,335 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 05:36:43,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 05:36:43,335 INFO L82 PathProgramCache]: Analyzing trace with hash 13306101, now seen corresponding path program 3 times [2021-06-14 05:36:43,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 05:36:43,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26847558] [2021-06-14 05:36:43,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 05:36:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 05:36:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 05:36:43,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 05:36:43,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26847558] [2021-06-14 05:36:43,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26847558] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 05:36:43,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868073033] [2021-06-14 05:36:43,692 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 [2021-06-14 05:36:43,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-14 05:36:43,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 05:36:43,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-14 05:36:43,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 05:36:43,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:43,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2021-06-14 05:36:43,868 INFO L550 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-14 05:36:43,874 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 05:36:43,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:43,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-06-14 05:36:43,879 INFO L550 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-14 05:36:43,885 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 05:36:43,891 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 05:36:43,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-06-14 05:36:43,895 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-14 05:36:43,903 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 05:36:43,905 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-14 05:36:43,905 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:57, output treesize:3 [2021-06-14 05:36:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 05:36:43,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868073033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 05:36:43,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 05:36:43,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2021-06-14 05:36:43,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114239999] [2021-06-14 05:36:43,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-14 05:36:43,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 05:36:43,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-14 05:36:43,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-14 05:36:43,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:43,925 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 05:36:43,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 05:36:43,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:43,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:43,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 05:36:43,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 05:36:43,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-14 05:36:43,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:44,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 05:36:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 05:36:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-14 05:36:44,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 05:36:44,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 05:36:44,455 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 05:36:44,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 05:36:44,455 INFO L82 PathProgramCache]: Analyzing trace with hash 438539825, now seen corresponding path program 4 times [2021-06-14 05:36:44,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 05:36:44,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571280875] [2021-06-14 05:36:44,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 05:36:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 05:36:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 05:36:44,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 05:36:44,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571280875] [2021-06-14 05:36:44,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571280875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 05:36:44,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091224324] [2021-06-14 05:36:44,511 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 [2021-06-14 05:36:44,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-14 05:36:44,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 05:36:44,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-14 05:36:44,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 05:36:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 05:36:44,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091224324] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 05:36:44,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 05:36:44,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-14 05:36:44,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953951179] [2021-06-14 05:36:44,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-14 05:36:44,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 05:36:44,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-14 05:36:44,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-14 05:36:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:44,639 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 05:36:44,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 05:36:44,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:44,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:44,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 05:36:44,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 05:36:44,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-14 05:36:44,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 05:36:44,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 05:36:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 05:36:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-14 05:36:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 05:36:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-14 05:36:45,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-14 05:36:45,017 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 05:36:45,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 05:36:45,017 INFO L82 PathProgramCache]: Analyzing trace with hash 967066511, now seen corresponding path program 5 times [2021-06-14 05:36:45,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 05:36:45,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021103965] [2021-06-14 05:36:45,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 05:36:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 05:36:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 05:36:45,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 05:36:45,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021103965] [2021-06-14 05:36:45,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021103965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 05:36:45,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844017313] [2021-06-14 05:36:45,078 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 [2021-06-14 05:36:45,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-14 05:36:45,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 05:36:45,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-14 05:36:45,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 05:36:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 05:36:45,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844017313] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 05:36:45,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 05:36:45,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-14 05:36:45,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187128831] [2021-06-14 05:36:45,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-14 05:36:45,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 05:36:45,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-14 05:36:45,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-14 05:36:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:45,190 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 05:36:45,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 05:36:45,190 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:45,190 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:45,190 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 05:36:45,190 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-14 05:36:45,190 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-14 05:36:45,190 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-14 05:36:45,190 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-14 05:36:45,190 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 05:36:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 05:36:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 05:36:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 05:36:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-14 05:36:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-14 05:36:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-14 05:36:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-14 05:36:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-14 05:36:45,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 05:36:45,609 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 05:36:45,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 05:36:45,609 INFO L82 PathProgramCache]: Analyzing trace with hash 2075070829, now seen corresponding path program 6 times [2021-06-14 05:36:45,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 05:36:45,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60966518] [2021-06-14 05:36:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 05:36:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 05:36:46,064 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 05:36:46,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 05:36:46,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60966518] [2021-06-14 05:36:46,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60966518] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 05:36:46,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764218375] [2021-06-14 05:36:46,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 05:36:46,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-14 05:36:46,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 05:36:46,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-14 05:36:46,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 05:36:46,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:46,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:46,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:46,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:46,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:46,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:46,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 75 [2021-06-14 05:36:46,463 INFO L550 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-14 05:36:46,469 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 05:36:46,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:46,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:46,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:46,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:46,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:46,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 05:36:46,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 47 [2021-06-14 05:36:46,477 INFO L550 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-14 05:36:46,484 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 05:36:46,510 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 05:36:46,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 87 [2021-06-14 05:36:56,868 WARN L205 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 5504 DAG size of output: 5502 [2021-06-14 05:37:01,679 WARN L205 SmtUtils]: Spent 3.69 s on a formula simplification. DAG size of input: 5640 DAG size of output: 5591 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown