/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array-hom.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 19:16:41,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 19:16:41,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 19:16:41,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 19:16:41,497 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-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-07-14 19:16:41,527 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 19:16:41,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 19:16:41,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 19:16:41,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 19:16:41,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 19:16:41,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 19:16:41,530 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 19:16:41,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 19:16:41,530 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 19:16:41,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 19:16:41,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 19:16:41,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 19:16:41,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 19:16:41,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 19:16:41,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 19:16:41,532 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 19:16:41,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 19:16:41,532 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 19:16:41,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 19:16:41,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 19:16:41,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 19:16:41,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 19:16:41,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 19:16:41,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 19:16:41,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 19:16:41,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 19:16:41,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 19:16:41,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 19:16:41,533 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 19:16:41,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 19:16:41,534 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 19:16:41,534 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 19:16:41,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 19:16:41,534 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 19:16:41,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 19:16:41,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 19:16:41,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 19:16:41,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 19:16:41,791 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 19:16:41,792 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 19:16:41,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array-hom.wvr.bpl [2021-07-14 19:16:41,793 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array-hom.wvr.bpl' [2021-07-14 19:16:41,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 19:16:41,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 19:16:41,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 19:16:41,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 19:16:41,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 19:16:41,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:16:41" (1/1) ... [2021-07-14 19:16:41,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:16:41" (1/1) ... [2021-07-14 19:16:41,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 19:16:41,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 19:16:41,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 19:16:41,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 19:16:41,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:16:41" (1/1) ... [2021-07-14 19:16:41,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:16:41" (1/1) ... [2021-07-14 19:16:41,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:16:41" (1/1) ... [2021-07-14 19:16:41,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:16:41" (1/1) ... [2021-07-14 19:16:41,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:16:41" (1/1) ... [2021-07-14 19:16:41,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:16:41" (1/1) ... [2021-07-14 19:16:41,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:16:41" (1/1) ... [2021-07-14 19:16:41,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 19:16:41,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 19:16:41,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 19:16:41,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 19:16:41,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:16:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 19:16:41,916 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 19:16:41,916 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 19:16:41,916 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 19:16:41,916 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 19:16:41,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 19:16:41,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 19:16:41,917 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 19:16:41,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 19:16:41,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 19:16:41,917 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 19:16:41,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 19:16:41,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 19:16:41,918 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 19:16:42,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 19:16:42,104 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 19:16:42,105 INFO L202 PluginConnector]: Adding new model max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:16:42 BoogieIcfgContainer [2021-07-14 19:16:42,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 19:16:42,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 19:16:42,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 19:16:42,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 19:16:42,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:16:41" (1/2) ... [2021-07-14 19:16:42,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372d25e and model type max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 07:16:42, skipping insertion in model container [2021-07-14 19:16:42,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:16:42" (2/2) ... [2021-07-14 19:16:42,123 INFO L111 eAbstractionObserver]: Analyzing ICFG max-array-hom.wvr.bpl [2021-07-14 19:16:42,127 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 19:16:42,127 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 19:16:42,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 19:16:42,128 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 19:16:42,171 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 19:16:42,185 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 19:16:42,228 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 19:16:42,232 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 19:16:42,232 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 19:16:42,232 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 19:16:42,232 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 19:16:42,232 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 19:16:42,232 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 19:16:42,232 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 19:16:42,322 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:16:42,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:16:42,329 INFO L82 PathProgramCache]: Analyzing trace with hash -548399394, now seen corresponding path program 1 times [2021-07-14 19:16:42,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:16:42,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826311129] [2021-07-14 19:16:42,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:16:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:16:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-14 19:16:42,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:16:42,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826311129] [2021-07-14 19:16:42,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826311129] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:16:42,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156801690] [2021-07-14 19:16:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:16:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:16:42,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-14 19:16:42,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:16:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-14 19:16:42,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156801690] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:16:42,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:16:42,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-07-14 19:16:42,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694958186] [2021-07-14 19:16:42,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 19:16:42,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:16:42,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 19:16:42,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-14 19:16:42,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:16:42,779 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:16:42,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:16:42,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:16:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:16:43,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-14 19:16:43,093 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:16:43,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:16:43,094 INFO L82 PathProgramCache]: Analyzing trace with hash 656275072, now seen corresponding path program 2 times [2021-07-14 19:16:43,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:16:43,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113514951] [2021-07-14 19:16:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:16:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:16:43,200 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 19:16:43,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:16:43,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113514951] [2021-07-14 19:16:43,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113514951] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:16:43,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914703829] [2021-07-14 19:16:43,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:16:43,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 19:16:43,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:16:43,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 19:16:43,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:16:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 19:16:43,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914703829] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:16:43,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:16:43,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 19:16:43,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193961927] [2021-07-14 19:16:43,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 19:16:43,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:16:43,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 19:16:43,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 19:16:43,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:16:43,365 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:16:43,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:16:43,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:16:43,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:16:43,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:16:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:16:43,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:16:43,675 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:16:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:16:43,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1292733022, now seen corresponding path program 3 times [2021-07-14 19:16:43,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:16:43,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085112431] [2021-07-14 19:16:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:16:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:16:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:16:43,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:16:43,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085112431] [2021-07-14 19:16:43,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085112431] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:16:43,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809709998] [2021-07-14 19:16:43,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:16:43,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-14 19:16:43,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:16:43,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-14 19:16:43,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:16:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:16:43,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809709998] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:16:43,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:16:43,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-07-14 19:16:43,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855578023] [2021-07-14 19:16:43,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-14 19:16:43,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:16:43,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-14 19:16:43,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-14 19:16:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:16:43,893 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:16:43,893 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:16:43,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:16:43,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:16:43,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:16:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:16:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:16:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:16:44,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:16:44,257 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:16:44,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:16:44,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1683770300, now seen corresponding path program 4 times [2021-07-14 19:16:44,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:16:44,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563103440] [2021-07-14 19:16:44,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:16:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:16:45,203 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 129 [2021-07-14 19:16:45,543 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 79 [2021-07-14 19:16:45,732 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 141 [2021-07-14 19:16:46,240 WARN L205 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 98 [2021-07-14 19:16:46,433 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 135 [2021-07-14 19:16:46,887 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 93 [2021-07-14 19:16:47,222 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2021-07-14 19:16:47,632 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2021-07-14 19:16:47,803 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 28 [2021-07-14 19:16:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:16:48,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:16:48,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563103440] [2021-07-14 19:16:48,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563103440] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:16:48,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748534409] [2021-07-14 19:16:48,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:16:48,071 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 19:16:48,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:16:48,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 42 conjunts are in the unsatisfiable core [2021-07-14 19:16:48,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:16:49,005 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-07-14 19:16:49,558 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-07-14 19:16:50,992 WARN L205 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 192 [2021-07-14 19:16:52,585 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 218 [2021-07-14 19:16:55,651 WARN L205 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 636 DAG size of output: 618 [2021-07-14 19:16:57,961 WARN L205 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 456 DAG size of output: 268 [2021-07-14 19:16:58,511 INFO L446 ElimStorePlain]: Different costs {0=[A, v_prenex_64, v_prenex_69], 7=[v_prenex_72, v_prenex_71, v_prenex_70, v_prenex_81, v_prenex_80, v_prenex_65, v_prenex_76, v_prenex_75, v_prenex_63, v_prenex_74, v_prenex_73, v_prenex_68, v_prenex_79, v_prenex_67, v_prenex_78, v_prenex_77, v_prenex_66]} [2021-07-14 19:16:58,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-07-14 19:16:58,538 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 19:16:59,256 WARN L205 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 267 [2021-07-14 19:16:59,256 INFO L628 ElimStorePlain]: treesize reduction 370, result has 65.9 percent of original size [2021-07-14 19:16:59,257 INFO L518 ElimStorePlain]: Eliminatee v_prenex_64 vanished before elimination [2021-07-14 19:16:59,257 INFO L518 ElimStorePlain]: Eliminatee v_prenex_69 vanished before elimination [2021-07-14 19:16:59,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:16:59,292 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:16:59,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 34 [2021-07-14 19:16:59,295 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 19:16:59,630 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-07-14 19:16:59,630 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:16:59,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:16:59,673 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:16:59,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 34 [2021-07-14 19:16:59,675 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 19:16:59,996 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2021-07-14 19:16:59,997 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:00,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:00,037 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-07-14 19:17:00,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 45 [2021-07-14 19:17:00,042 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:00,358 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2021-07-14 19:17:00,359 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:00,359 INFO L518 ElimStorePlain]: Eliminatee v_prenex_81 vanished before elimination [2021-07-14 19:17:00,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:00,398 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:00,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 34 [2021-07-14 19:17:00,400 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:00,703 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2021-07-14 19:17:00,704 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:00,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:00,742 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-07-14 19:17:00,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 38 [2021-07-14 19:17:00,757 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:01,054 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2021-07-14 19:17:01,056 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:01,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:01,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:01,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 49 [2021-07-14 19:17:01,102 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:01,401 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2021-07-14 19:17:01,401 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:01,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:01,433 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:01,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 46 [2021-07-14 19:17:01,443 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:01,742 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2021-07-14 19:17:01,743 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:01,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:01,771 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:01,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 49 [2021-07-14 19:17:01,791 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:02,095 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2021-07-14 19:17:02,096 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:02,096 INFO L518 ElimStorePlain]: Eliminatee v_prenex_74 vanished before elimination [2021-07-14 19:17:02,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:02,128 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:02,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 34 [2021-07-14 19:17:02,130 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:02,431 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2021-07-14 19:17:02,432 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:02,432 INFO L518 ElimStorePlain]: Eliminatee v_prenex_68 vanished before elimination [2021-07-14 19:17:02,432 INFO L518 ElimStorePlain]: Eliminatee v_prenex_79 vanished before elimination [2021-07-14 19:17:02,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:02,479 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:02,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 34 [2021-07-14 19:17:02,481 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:02,765 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2021-07-14 19:17:02,765 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:02,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:02,796 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:02,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 34 [2021-07-14 19:17:02,798 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:03,087 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2021-07-14 19:17:03,087 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:03,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:03,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:03,130 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:03,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 31 [2021-07-14 19:17:03,134 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:03,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:03,165 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:03,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 34 [2021-07-14 19:17:03,167 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:03,445 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-07-14 19:17:03,445 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:03,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:03,473 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:03,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 46 [2021-07-14 19:17:03,478 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:03,727 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2021-07-14 19:17:03,728 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:03,778 INFO L550 ElimStorePlain]: Start of recursive call 1: 34 dim-0 vars, 20 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-07-14 19:17:03,779 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 54 variables, input treesize:1103, output treesize:175 [2021-07-14 19:17:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:17:03,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748534409] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:03,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:03,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 27 [2021-07-14 19:17:03,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949423089] [2021-07-14 19:17:03,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-14 19:17:03,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:03,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-14 19:17:03,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2021-07-14 19:17:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:03,928 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:03,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:17:03,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:03,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:03,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:03,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:04,505 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 49 [2021-07-14 19:17:04,949 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 65 [2021-07-14 19:17:05,239 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 62 [2021-07-14 19:17:05,436 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-07-14 19:17:05,635 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-07-14 19:17:06,001 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 107 [2021-07-14 19:17:06,342 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2021-07-14 19:17:07,514 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 155 DAG size of output: 143 [2021-07-14 19:17:07,856 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 78 [2021-07-14 19:17:09,993 WARN L205 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 307 DAG size of output: 263 [2021-07-14 19:17:11,177 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 236 DAG size of output: 113 [2021-07-14 19:17:11,461 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2021-07-14 19:17:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:17:11,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:11,882 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:11,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:11,883 INFO L82 PathProgramCache]: Analyzing trace with hash 486527590, now seen corresponding path program 5 times [2021-07-14 19:17:11,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:11,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512782441] [2021-07-14 19:17:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:17:11,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:11,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512782441] [2021-07-14 19:17:11,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512782441] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:11,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757396999] [2021-07-14 19:17:11,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:12,011 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 19:17:12,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:17:12,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-14 19:17:12,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:17:12,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757396999] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:12,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:12,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-07-14 19:17:12,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373946537] [2021-07-14 19:17:12,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-14 19:17:12,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:12,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-14 19:17:12,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-07-14 19:17:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:12,207 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:12,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:17:12,208 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:12,208 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:12,208 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:12,208 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:17:12,208 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:13,006 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-07-14 19:17:13,224 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-07-14 19:17:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:13,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:13,440 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:13,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:13,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1457565616, now seen corresponding path program 6 times [2021-07-14 19:17:13,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:13,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12307382] [2021-07-14 19:17:13,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 31 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:17:13,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:13,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12307382] [2021-07-14 19:17:13,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12307382] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:13,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365428482] [2021-07-14 19:17:13,590 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 [2021-07-14 19:17:13,656 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-07-14 19:17:13,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:17:13,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 19:17:13,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:17:13,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365428482] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:13,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:13,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 28 [2021-07-14 19:17:13,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225966238] [2021-07-14 19:17:13,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-14 19:17:13,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:13,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-14 19:17:13,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2021-07-14 19:17:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:13,913 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:13,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 28 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:17:13,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:13,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:13,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:13,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:13,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:13,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:17:14,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-07-14 19:17:14,293 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:14,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:14,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1160926222, now seen corresponding path program 7 times [2021-07-14 19:17:14,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:14,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505732131] [2021-07-14 19:17:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:17:14,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:14,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505732131] [2021-07-14 19:17:14,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505732131] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:14,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929938902] [2021-07-14 19:17:14,454 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 [2021-07-14 19:17:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:14,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 19:17:14,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 21 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 19:17:14,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929938902] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:14,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:14,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-07-14 19:17:14,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601030523] [2021-07-14 19:17:14,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-07-14 19:17:14,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:14,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-07-14 19:17:14,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2021-07-14 19:17:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:14,787 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:14,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:17:14,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:14,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:14,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:14,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:14,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:14,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:17:14,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:17:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:17:15,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-07-14 19:17:15,209 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:15,209 INFO L82 PathProgramCache]: Analyzing trace with hash 441689876, now seen corresponding path program 8 times [2021-07-14 19:17:15,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:15,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625191781] [2021-07-14 19:17:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 20 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:17:15,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:15,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625191781] [2021-07-14 19:17:15,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625191781] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:15,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329130614] [2021-07-14 19:17:15,352 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 [2021-07-14 19:17:15,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 19:17:15,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:17:15,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-14 19:17:15,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 20 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:17:15,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329130614] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:15,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:15,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 32 [2021-07-14 19:17:15,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703016238] [2021-07-14 19:17:15,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-07-14 19:17:15,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:15,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-07-14 19:17:15,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2021-07-14 19:17:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:15,672 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:15,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:17:15,672 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:15,673 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:15,673 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:15,673 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:15,673 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:15,673 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:17:15,673 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:17:15,673 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:17:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:17:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:17:16,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:16,122 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:16,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:16,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1337499210, now seen corresponding path program 9 times [2021-07-14 19:17:16,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:16,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779370900] [2021-07-14 19:17:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:23,746 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 54 [2021-07-14 19:17:24,358 WARN L205 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 405 DAG size of output: 255 [2021-07-14 19:17:24,976 WARN L205 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 73 [2021-07-14 19:17:27,972 WARN L205 SmtUtils]: Spent 2.99 s on a formula simplification. DAG size of input: 845 DAG size of output: 655 [2021-07-14 19:17:30,182 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 650 DAG size of output: 123 [2021-07-14 19:17:37,733 WARN L205 SmtUtils]: Spent 7.54 s on a formula simplification. DAG size of input: 809 DAG size of output: 753 [2021-07-14 19:17:41,417 WARN L205 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 745 DAG size of output: 213 [2021-07-14 19:17:44,615 WARN L205 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 884 DAG size of output: 622 [2021-07-14 19:17:48,125 WARN L205 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 622 DAG size of output: 269 [2021-07-14 19:22:31,017 WARN L205 SmtUtils]: Spent 4.71 m on a formula simplification. DAG size of input: 1416 DAG size of output: 1744 [2021-07-14 19:22:31,686 WARN L205 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 1744 [2021-07-14 19:22:47,432 WARN L205 SmtUtils]: Spent 15.35 s on a formula simplification. DAG size of input: 1706 DAG size of output: 389 [2021-07-14 19:27:16,070 WARN L205 SmtUtils]: Spent 4.48 m on a formula simplification. DAG size of input: 1425 DAG size of output: 1594 [2021-07-14 19:27:16,692 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 1594 [2021-07-14 19:27:29,329 WARN L205 SmtUtils]: Spent 12.31 s on a formula simplification. DAG size of input: 1576 DAG size of output: 387 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown