/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/array-sum.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 16:57:00,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 16:57:00,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 16:57:00,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 16:57:00,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-06 16:57:00,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-06 16:57:00,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-06 16:57:00,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-06 16:57:00,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-06 16:57:00,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-06 16:57:00,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-06 16:57:00,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-06 16:57:00,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-06 16:57:00,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-06 16:57:00,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-06 16:57:00,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-06 16:57:00,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-06 16:57:00,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-06 16:57:00,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-06 16:57:00,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-06 16:57:00,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random42.epf [2021-06-06 16:57:00,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 16:57:00,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 16:57:00,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 16:57:00,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 16:57:00,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 16:57:00,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 16:57:00,172 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 16:57:00,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 16:57:00,173 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 16:57:00,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 16:57:00,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 16:57:00,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 16:57:00,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 16:57:00,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 16:57:00,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 16:57:00,174 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 16:57:00,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 16:57:00,174 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 16:57:00,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 16:57:00,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 16:57:00,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 16:57:00,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 16:57:00,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 16:57:00,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 16:57:00,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 16:57:00,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 16:57:00,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 16:57:00,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 16:57:00,175 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-06 16:57:00,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 16:57:00,175 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 16:57:00,176 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 16:57:00,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 16:57:00,176 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 16:57:00,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-06 16:57:00,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 16:57:00,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 16:57:00,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 16:57:00,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 16:57:00,411 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 16:57:00,411 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 16:57:00,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/array-sum.wvr.bpl [2021-06-06 16:57:00,412 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/array-sum.wvr.bpl' [2021-06-06 16:57:00,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 16:57:00,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 16:57:00,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 16:57:00,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 16:57:00,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 16:57:00,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:57:00" (1/1) ... [2021-06-06 16:57:00,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:57:00" (1/1) ... [2021-06-06 16:57:00,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 16:57:00,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 16:57:00,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 16:57:00,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 16:57:00,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:57:00" (1/1) ... [2021-06-06 16:57:00,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:57:00" (1/1) ... [2021-06-06 16:57:00,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:57:00" (1/1) ... [2021-06-06 16:57:00,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:57:00" (1/1) ... [2021-06-06 16:57:00,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:57:00" (1/1) ... [2021-06-06 16:57:00,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:57:00" (1/1) ... [2021-06-06 16:57:00,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:57:00" (1/1) ... [2021-06-06 16:57:00,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 16:57:00,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 16:57:00,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 16:57:00,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 16:57:00,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:57:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 16:57:00,520 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 16:57:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 16:57:00,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 16:57:00,521 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 16:57:00,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 16:57:00,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 16:57:00,521 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 16:57:00,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 16:57:00,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 16:57:00,521 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 16:57:00,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 16:57:00,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 16:57:00,522 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 16:57:00,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 16:57:00,630 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 16:57:00,631 INFO L202 PluginConnector]: Adding new model array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 04:57:00 BoogieIcfgContainer [2021-06-06 16:57:00,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 16:57:00,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 16:57:00,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 16:57:00,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 16:57:00,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 04:57:00" (1/2) ... [2021-06-06 16:57:00,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d68852b and model type array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 04:57:00, skipping insertion in model container [2021-06-06 16:57:00,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 04:57:00" (2/2) ... [2021-06-06 16:57:00,635 INFO L111 eAbstractionObserver]: Analyzing ICFG array-sum.wvr.bpl [2021-06-06 16:57:00,639 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 16:57:00,639 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 16:57:00,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 16:57:00,640 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 16:57:00,681 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-06 16:57:00,695 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 16:57:00,731 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 16:57:00,731 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 16:57:00,731 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 16:57:00,731 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 16:57:00,731 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 16:57:00,732 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 16:57:00,732 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 16:57:00,732 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 16:57:00,775 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:57:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:57:00,779 INFO L82 PathProgramCache]: Analyzing trace with hash -405846033, now seen corresponding path program 1 times [2021-06-06 16:57:00,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:57:00,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736546386] [2021-06-06 16:57:00,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:57:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 16:57:00,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:57:00,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736546386] [2021-06-06 16:57:00,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736546386] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 16:57:00,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 16:57:00,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 16:57:00,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061105832] [2021-06-06 16:57:00,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 16:57:00,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:57:00,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 16:57:00,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-06 16:57:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:00,989 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:57:00,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:57:00,992 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:01,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 16:57:01,092 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:57:01,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:57:01,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1150394117, now seen corresponding path program 1 times [2021-06-06 16:57:01,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:57:01,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189537184] [2021-06-06 16:57:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:57:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 16:57:01,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:57:01,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189537184] [2021-06-06 16:57:01,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189537184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:01,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273342980] [2021-06-06 16:57:01,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:01,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 16:57:01,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:57:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 16:57:01,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273342980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:01,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:57:01,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-06 16:57:01,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697508689] [2021-06-06 16:57:01,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 16:57:01,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:57:01,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 16:57:01,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-06-06 16:57:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:01,377 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:57:01,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:57:01,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:01,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:01,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:01,737 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:57:01,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:57:01,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1113087839, now seen corresponding path program 2 times [2021-06-06 16:57:01,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:57:01,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305799252] [2021-06-06 16:57:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:57:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-06 16:57:01,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:57:01,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305799252] [2021-06-06 16:57:01,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305799252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:01,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132892494] [2021-06-06 16:57:01,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:01,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 16:57:01,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:57:01,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-06 16:57:01,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:57:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-06 16:57:02,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132892494] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:02,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:57:02,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 16:57:02,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361272913] [2021-06-06 16:57:02,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 16:57:02,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:57:02,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 16:57:02,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-06-06 16:57:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:02,081 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:57:02,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 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) [2021-06-06 16:57:02,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:02,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:02,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:02,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:02,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:02,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:02,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:02,577 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:57:02,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:57:02,578 INFO L82 PathProgramCache]: Analyzing trace with hash -387296404, now seen corresponding path program 3 times [2021-06-06 16:57:02,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:57:02,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233811224] [2021-06-06 16:57:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:57:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-06 16:57:02,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:57:02,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233811224] [2021-06-06 16:57:02,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233811224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:02,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650552608] [2021-06-06 16:57:02,667 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 [2021-06-06 16:57:02,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 16:57:02,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:57:02,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-06 16:57:02,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:57:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-06 16:57:02,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650552608] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:02,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:57:02,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 16:57:02,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601330061] [2021-06-06 16:57:02,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 16:57:02,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:57:02,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 16:57:02,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 16:57:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:02,868 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:57:02,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:57:02,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:02,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:02,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:02,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 16:57:03,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:03,550 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:57:03,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:57:03,550 INFO L82 PathProgramCache]: Analyzing trace with hash 799975617, now seen corresponding path program 4 times [2021-06-06 16:57:03,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:57:03,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393338002] [2021-06-06 16:57:03,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:57:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:57:04,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:57:04,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393338002] [2021-06-06 16:57:04,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393338002] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:04,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420764146] [2021-06-06 16:57:04,217 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 [2021-06-06 16:57:04,260 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 16:57:04,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:57:04,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-06 16:57:04,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:57:04,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,921 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:04,922 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 97 [2021-06-06 16:57:04,955 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-06 16:57:04,961 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:04,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:04,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:04,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:04,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-06-06 16:57:04,971 INFO L550 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-06-06 16:57:04,976 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:04,977 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 16:57:04,977 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:69, output treesize:15 [2021-06-06 16:57:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:57:05,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420764146] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:05,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:57:05,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 39 [2021-06-06 16:57:05,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625815115] [2021-06-06 16:57:05,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-06 16:57:05,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:57:05,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-06 16:57:05,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 16:57:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:05,071 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:57:05,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 39 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:57:05,071 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:05,071 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:05,071 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:05,071 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-06-06 16:57:05,071 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:07,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:07,138 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:57:07,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:57:07,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1076922374, now seen corresponding path program 5 times [2021-06-06 16:57:07,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:57:07,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620029116] [2021-06-06 16:57:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:57:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:57:07,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:57:07,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620029116] [2021-06-06 16:57:07,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620029116] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:07,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696231465] [2021-06-06 16:57:07,898 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 [2021-06-06 16:57:07,930 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 16:57:07,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:57:07,931 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 49 conjunts are in the unsatisfiable core [2021-06-06 16:57:07,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:57:08,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:08,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:08,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,919 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:08,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 22 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 109 [2021-06-06 16:57:08,929 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-06 16:57:08,936 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:08,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:08,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:08,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:08,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:08,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:08,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 15 [2021-06-06 16:57:08,951 INFO L550 ElimStorePlain]: Start of recursive call 3: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-06 16:57:08,957 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:08,958 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 16:57:08,958 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:91, output treesize:17 [2021-06-06 16:57:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:57:09,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696231465] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:09,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:57:09,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24] total 48 [2021-06-06 16:57:09,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487894512] [2021-06-06 16:57:09,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-06-06 16:57:09,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:57:09,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-06-06 16:57:09,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 16:57:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:09,040 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:57:09,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 48 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:57:09,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:09,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:09,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:09,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:09,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:09,041 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:11,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:57:11,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:11,943 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:57:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:57:11,943 INFO L82 PathProgramCache]: Analyzing trace with hash -353519787, now seen corresponding path program 6 times [2021-06-06 16:57:11,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:57:11,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268485097] [2021-06-06 16:57:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:57:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 3 proven. 112 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-06-06 16:57:12,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:57:12,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268485097] [2021-06-06 16:57:12,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268485097] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:12,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563379853] [2021-06-06 16:57:12,733 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 [2021-06-06 16:57:12,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-06 16:57:12,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:57:12,774 WARN L261 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 78 conjunts are in the unsatisfiable core [2021-06-06 16:57:12,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:57:14,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,769 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:14,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 49 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 6 case distinctions, treesize of input 107 treesize of output 125 [2021-06-06 16:57:14,793 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-06-06 16:57:14,813 INFO L628 ElimStorePlain]: treesize reduction 4, result has 92.3 percent of original size [2021-06-06 16:57:14,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:14,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:14,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:14,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 11 [2021-06-06 16:57:14,821 INFO L550 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-06-06 16:57:14,830 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:14,830 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 16:57:14,830 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:26 [2021-06-06 16:57:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:57:15,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563379853] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:15,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:57:15,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 42] total 68 [2021-06-06 16:57:15,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407301572] [2021-06-06 16:57:15,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-06-06 16:57:15,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:57:15,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-06-06 16:57:15,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=4196, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 16:57:15,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:15,089 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:57:15,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.6176470588235294) internal successors, (110), 68 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:57:15,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:15,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:15,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:15,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:15,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:15,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:57:15,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:21,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:57:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-06-06 16:57:21,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-06 16:57:21,357 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:57:21,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:57:21,357 INFO L82 PathProgramCache]: Analyzing trace with hash 483921363, now seen corresponding path program 7 times [2021-06-06 16:57:21,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:57:21,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366130461] [2021-06-06 16:57:21,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:57:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 7 proven. 118 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-06-06 16:57:21,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:57:21,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366130461] [2021-06-06 16:57:21,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366130461] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:21,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126589690] [2021-06-06 16:57:21,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:21,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-06 16:57:21,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:57:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 7 proven. 118 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-06-06 16:57:21,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126589690] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:21,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:57:21,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-06-06 16:57:21,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923087599] [2021-06-06 16:57:21,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 16:57:21,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:57:21,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 16:57:21,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-06-06 16:57:21,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:21,645 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:57:21,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:57:21,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:21,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:21,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:21,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:21,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:21,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:57:21,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 101 states. [2021-06-06 16:57:21,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:57:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-06-06 16:57:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:22,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:22,269 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:57:22,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:57:22,269 INFO L82 PathProgramCache]: Analyzing trace with hash -544403000, now seen corresponding path program 8 times [2021-06-06 16:57:22,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:57:22,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620291495] [2021-06-06 16:57:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:57:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 5 proven. 169 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-06-06 16:57:23,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:57:23,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620291495] [2021-06-06 16:57:23,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620291495] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:23,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165668780] [2021-06-06 16:57:23,293 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:23,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 16:57:23,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:57:23,333 WARN L261 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 88 conjunts are in the unsatisfiable core [2021-06-06 16:57:23,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:57:26,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:26,646 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2021-06-06 16:57:26,646 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:26,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 57 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 34 case distinctions, treesize of input 151 treesize of output 437 [2021-06-06 16:57:27,009 INFO L550 ElimStorePlain]: Start of recursive call 2: 5 dim-0 vars, End of recursive call: and 2 xjuncts. [2021-06-06 16:57:27,018 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:27,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:27,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:27,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:27,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:27,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:27,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:27,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:27,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:27,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:27,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:27,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:27,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:27,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:27,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 16:57:27,029 INFO L550 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-06 16:57:27,038 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:27,043 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 16:57:27,043 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:165, output treesize:21 [2021-06-06 16:57:27,166 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:57:27,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165668780] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:27,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:57:27,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 45] total 75 [2021-06-06 16:57:27,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664804749] [2021-06-06 16:57:27,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-06-06 16:57:27,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:57:27,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-06-06 16:57:27,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=5246, Unknown=0, NotChecked=0, Total=5550 [2021-06-06 16:57:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:27,168 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:57:27,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 1.7066666666666668) internal successors, (128), 75 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:57:27,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:27,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:27,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:27,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:27,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:27,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:57:27,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 101 states. [2021-06-06 16:57:27,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:27,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:41,988 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2021-06-06 16:57:42,183 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2021-06-06 16:57:42,372 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-06-06 16:57:42,770 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2021-06-06 16:57:43,179 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2021-06-06 16:57:43,395 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2021-06-06 16:57:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:57:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-06-06 16:57:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-06-06 16:57:44,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:44,055 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:57:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:57:44,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1419258368, now seen corresponding path program 9 times [2021-06-06 16:57:44,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:57:44,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572018238] [2021-06-06 16:57:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:57:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 15 proven. 170 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-06-06 16:57:44,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:57:44,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572018238] [2021-06-06 16:57:44,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572018238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:44,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659582965] [2021-06-06 16:57:44,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:44,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-06 16:57:44,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:57:44,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 16:57:44,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:57:44,337 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 15 proven. 170 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-06-06 16:57:44,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659582965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:44,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:57:44,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2021-06-06 16:57:44,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674883866] [2021-06-06 16:57:44,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 16:57:44,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:57:44,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 16:57:44,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-06-06 16:57:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:44,339 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:57:44,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:57:44,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:44,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:44,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:44,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:44,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:44,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:57:44,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 101 states. [2021-06-06 16:57:44,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:44,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2021-06-06 16:57:44,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:57:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-06-06 16:57:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-06-06 16:57:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:44,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:44,995 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:57:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:57:44,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1750045153, now seen corresponding path program 10 times [2021-06-06 16:57:44,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:57:44,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763741951] [2021-06-06 16:57:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:57:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:57:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 12 proven. 233 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-06 16:57:46,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:57:46,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763741951] [2021-06-06 16:57:46,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763741951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:46,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457373948] [2021-06-06 16:57:46,236 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:57:46,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 16:57:46,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:57:46,278 WARN L261 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 104 conjunts are in the unsatisfiable core [2021-06-06 16:57:46,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:57:50,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,169 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:50,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 121 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 15 case distinctions, treesize of input 167 treesize of output 251 [2021-06-06 16:57:50,220 INFO L550 ElimStorePlain]: Start of recursive call 2: 10 dim-0 vars, End of recursive call: and 2 xjuncts. [2021-06-06 16:57:50,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:50,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:50,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:50,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:50,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:57:50,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 16:57:50,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 15 [2021-06-06 16:57:50,240 INFO L550 ElimStorePlain]: Start of recursive call 3: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-06 16:57:50,246 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:57:50,247 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 16:57:50,247 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:173, output treesize:15 [2021-06-06 16:57:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 16:57:50,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457373948] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:57:50,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:57:50,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 52] total 86 [2021-06-06 16:57:50,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755614699] [2021-06-06 16:57:50,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-06-06 16:57:50,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:57:50,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-06-06 16:57:50,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=6837, Unknown=0, NotChecked=0, Total=7310 [2021-06-06 16:57:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:57:50,377 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:57:50,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 1.6744186046511629) internal successors, (144), 86 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:57:50,378 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:57:50,378 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:57:50,378 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:57:50,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:50,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:50,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:57:50,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 101 states. [2021-06-06 16:57:50,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:57:50,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2021-06-06 16:57:50,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:57:50,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:58:02,948 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-06-06 16:58:07,654 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2021-06-06 16:58:08,730 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2021-06-06 16:58:08,985 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2021-06-06 16:58:09,443 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2021-06-06 16:58:09,639 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2021-06-06 16:58:09,851 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2021-06-06 16:58:10,248 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2021-06-06 16:58:10,670 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2021-06-06 16:58:10,878 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2021-06-06 16:58:11,414 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2021-06-06 16:58:11,661 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2021-06-06 16:58:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:58:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:58:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:58:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:58:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:58:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:58:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-06-06 16:58:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:58:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-06-06 16:58:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:58:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2021-06-06 16:58:12,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:58:12,076 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:58:12,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:58:12,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1828386359, now seen corresponding path program 11 times [2021-06-06 16:58:12,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:58:12,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629958829] [2021-06-06 16:58:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:58:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:58:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 26 proven. 231 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-06-06 16:58:12,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:58:12,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629958829] [2021-06-06 16:58:12,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629958829] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:58:12,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909759598] [2021-06-06 16:58:12,161 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:58:12,208 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-06 16:58:12,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:58:12,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-06 16:58:12,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:58:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 26 proven. 231 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-06-06 16:58:12,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909759598] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:58:12,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 16:58:12,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 17 [2021-06-06 16:58:12,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719594137] [2021-06-06 16:58:12,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 16:58:12,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 16:58:12,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 16:58:12,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-06 16:58:12,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:58:12,391 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 16:58:12,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 16:58:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:58:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:58:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:58:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:58:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:58:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:58:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 101 states. [2021-06-06 16:58:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:58:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2021-06-06 16:58:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:58:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 158 states. [2021-06-06 16:58:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 16:58:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 16:58:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 16:58:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 16:58:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:58:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:58:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 16:58:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-06-06 16:58:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 16:58:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-06-06 16:58:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 16:58:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2021-06-06 16:58:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 16:58:13,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2021-06-06 16:58:13,081 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 16:58:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 16:58:13,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1883129966, now seen corresponding path program 12 times [2021-06-06 16:58:13,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 16:58:13,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912510246] [2021-06-06 16:58:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 16:58:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 16:58:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 30 proven. 298 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-06-06 16:58:14,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 16:58:14,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912510246] [2021-06-06 16:58:14,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912510246] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 16:58:14,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362859374] [2021-06-06 16:58:14,572 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 16:58:14,624 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-06 16:58:14,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 16:58:14,626 WARN L261 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 124 conjunts are in the unsatisfiable core [2021-06-06 16:58:14,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 16:58:21,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:21,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 16:58:22,732 WARN L205 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 494 [2021-06-06 16:58:22,733 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 16:58:22,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 22 select indices, 22 select index equivalence classes, 119 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 112 case distinctions, treesize of input 195 treesize of output 1165 [2021-06-06 16:58:23,499 WARN L205 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 1165 DAG size of output: 1035 [2021-06-06 16:58:24,351 WARN L205 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 1197 DAG size of output: 1068 [2021-06-06 16:58:39,357 WARN L205 SmtUtils]: Spent 14.32 s on a formula simplification. DAG size of input: 8910 DAG size of output: 5061 [2021-06-06 16:58:55,677 WARN L205 SmtUtils]: Spent 15.26 s on a formula simplification. DAG size of input: 8942 DAG size of output: 5094 [2021-06-06 17:02:00,499 WARN L205 SmtUtils]: Spent 2.97 m on a formula simplification. DAG size of input: 60447 DAG size of output: 29615 [2021-06-06 17:05:13,871 WARN L205 SmtUtils]: Spent 3.11 m on a formula simplification. DAG size of input: 60505 DAG size of output: 29674 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown