/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-fun.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 19:17:03,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 19:17:03,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 19:17:03,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 19:17:03,250 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 19:17:03,277 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 19:17:03,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 19:17:03,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 19:17:03,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 19:17:03,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 19:17:03,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 19:17:03,279 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 19:17:03,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 19:17:03,280 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 19:17:03,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 19:17:03,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 19:17:03,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 19:17:03,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 19:17:03,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 19:17:03,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 19:17:03,281 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 19:17:03,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 19:17:03,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 19:17:03,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 19:17:03,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 19:17:03,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 19:17:03,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 19:17:03,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 19:17:03,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 19:17:03,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 19:17:03,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 19:17:03,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 19:17:03,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 19:17:03,284 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 19:17:03,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 19:17:03,284 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 19:17:03,284 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 19:17:03,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 19:17:03,292 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 19:17:03,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 19:17:03,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 19:17:03,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 19:17:03,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 19:17:03,592 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 19:17:03,593 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 19:17:03,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-fun.wvr.bpl [2021-07-14 19:17:03,594 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-fun.wvr.bpl' [2021-07-14 19:17:03,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 19:17:03,630 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 19:17:03,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 19:17:03,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 19:17:03,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 19:17:03,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:03" (1/1) ... [2021-07-14 19:17:03,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:03" (1/1) ... [2021-07-14 19:17:03,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 19:17:03,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 19:17:03,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 19:17:03,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 19:17:03,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:03" (1/1) ... [2021-07-14 19:17:03,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:03" (1/1) ... [2021-07-14 19:17:03,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:03" (1/1) ... [2021-07-14 19:17:03,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:03" (1/1) ... [2021-07-14 19:17:03,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:03" (1/1) ... [2021-07-14 19:17:03,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:03" (1/1) ... [2021-07-14 19:17:03,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:03" (1/1) ... [2021-07-14 19:17:03,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 19:17:03,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 19:17:03,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 19:17:03,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 19:17:03,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:03" (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 19:17:03,749 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 19:17:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 19:17:03,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 19:17:03,750 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 19:17:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 19:17:03,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 19:17:03,751 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 19:17:03,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 19:17:03,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 19:17:03,751 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 19:17:03,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 19:17:03,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 19:17:03,752 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 19:17:03,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 19:17:03,915 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 19:17:03,917 INFO L202 PluginConnector]: Adding new model max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:17:03 BoogieIcfgContainer [2021-07-14 19:17:03,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 19:17:03,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 19:17:03,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 19:17:03,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 19:17:03,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:17:03" (1/2) ... [2021-07-14 19:17:03,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df2778 and model type max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 07:17:03, skipping insertion in model container [2021-07-14 19:17:03,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:17:03" (2/2) ... [2021-07-14 19:17:03,924 INFO L111 eAbstractionObserver]: Analyzing ICFG max-fun.wvr.bpl [2021-07-14 19:17:03,928 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 19:17:03,928 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 19:17:03,929 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 19:17:03,929 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 19:17:03,987 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 19:17:04,008 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 19:17:04,072 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 19:17:04,072 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 19:17:04,073 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 19:17:04,073 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 19:17:04,073 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 19:17:04,073 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 19:17:04,073 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 19:17:04,073 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 19:17:04,162 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:04,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:04,170 INFO L82 PathProgramCache]: Analyzing trace with hash -548399394, now seen corresponding path program 1 times [2021-07-14 19:17:04,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:04,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731958641] [2021-07-14 19:17:04,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:04,467 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 19:17:04,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:04,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731958641] [2021-07-14 19:17:04,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731958641] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:04,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327849171] [2021-07-14 19:17:04,468 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 19:17:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:04,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-14 19:17:04,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:04,737 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 19:17:04,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327849171] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:04,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:04,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-07-14 19:17:04,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211071577] [2021-07-14 19:17:04,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 19:17:04,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:04,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 19:17:04,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-14 19:17:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:04,766 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:04,768 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 19:17:04,768 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:04,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:05,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-14 19:17:05,105 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:05,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:05,106 INFO L82 PathProgramCache]: Analyzing trace with hash 656275072, now seen corresponding path program 2 times [2021-07-14 19:17:05,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:05,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910484480] [2021-07-14 19:17:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:05,222 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 19:17:05,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:05,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910484480] [2021-07-14 19:17:05,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910484480] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:05,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795134774] [2021-07-14 19:17:05,223 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 19:17:05,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 19:17:05,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:17:05,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 19:17:05,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:05,444 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 19:17:05,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795134774] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:05,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:05,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 19:17:05,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102224899] [2021-07-14 19:17:05,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 19:17:05,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:05,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 19:17:05,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 19:17:05,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:05,451 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:05,452 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 19:17:05,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:05,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:05,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:05,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:05,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:05,777 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:05,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:05,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1292733022, now seen corresponding path program 3 times [2021-07-14 19:17:05,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:05,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884188225] [2021-07-14 19:17:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:05,926 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 19:17:05,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:05,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884188225] [2021-07-14 19:17:05,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884188225] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:05,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319948786] [2021-07-14 19:17:05,927 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 19:17:05,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-14 19:17:05,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:17:05,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-14 19:17:05,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:06,102 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 19:17:06,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319948786] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:06,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:06,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-07-14 19:17:06,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513498066] [2021-07-14 19:17:06,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-14 19:17:06,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:06,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-14 19:17:06,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-14 19:17:06,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:06,107 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:06,107 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 19:17:06,108 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:06,108 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:06,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:06,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:06,476 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:06,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:06,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1683770300, now seen corresponding path program 4 times [2021-07-14 19:17:06,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:06,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867841546] [2021-07-14 19:17:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:07,454 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-07-14 19:17:07,699 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 129 [2021-07-14 19:17:08,138 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 79 [2021-07-14 19:17:08,498 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 141 [2021-07-14 19:17:09,043 WARN L205 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 98 [2021-07-14 19:17:09,301 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 135 [2021-07-14 19:17:09,821 WARN L205 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 93 [2021-07-14 19:17:10,222 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2021-07-14 19:17:10,700 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2021-07-14 19:17:10,885 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 28 [2021-07-14 19:17:11,067 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 26 [2021-07-14 19:17:11,167 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 19:17:11,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:11,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867841546] [2021-07-14 19:17:11,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867841546] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:11,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028962061] [2021-07-14 19:17:11,167 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 19:17:11,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 19:17:11,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:17:11,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 42 conjunts are in the unsatisfiable core [2021-07-14 19:17:11,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:12,300 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-07-14 19:17:12,929 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-07-14 19:17:14,564 WARN L205 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 210 DAG size of output: 192 [2021-07-14 19:17:16,326 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 218 [2021-07-14 19:17:19,663 WARN L205 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 636 DAG size of output: 618 [2021-07-14 19:17:22,188 WARN L205 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 456 DAG size of output: 268 [2021-07-14 19:17:22,838 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 19:17:22,874 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 19:17:22,876 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:23,597 WARN L205 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 267 [2021-07-14 19:17:23,598 INFO L628 ElimStorePlain]: treesize reduction 370, result has 65.9 percent of original size [2021-07-14 19:17:23,598 INFO L518 ElimStorePlain]: Eliminatee v_prenex_64 vanished before elimination [2021-07-14 19:17:23,598 INFO L518 ElimStorePlain]: Eliminatee v_prenex_69 vanished before elimination [2021-07-14 19:17:23,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:23,654 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:23,655 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 19:17:23,657 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:24,007 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-07-14 19:17:24,008 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:24,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:24,052 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:24,052 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 19:17:24,068 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:24,419 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2021-07-14 19:17:24,420 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:24,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:24,472 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-07-14 19:17:24,473 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 45 treesize of output 45 [2021-07-14 19:17:24,477 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:24,798 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2021-07-14 19:17:24,798 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:24,798 INFO L518 ElimStorePlain]: Eliminatee v_prenex_81 vanished before elimination [2021-07-14 19:17:24,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:24,844 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:24,844 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 19:17:24,846 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:25,154 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2021-07-14 19:17:25,154 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:25,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:25,193 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-07-14 19:17:25,194 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 19:17:25,196 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:25,500 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2021-07-14 19:17:25,500 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:25,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:25,529 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:25,529 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 19:17:25,551 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:25,872 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2021-07-14 19:17:25,873 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:25,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:25,921 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:25,922 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 19:17:25,927 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:26,219 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2021-07-14 19:17:26,220 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:26,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:26,249 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:26,249 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 19:17:26,271 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:26,575 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2021-07-14 19:17:26,575 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:26,575 INFO L518 ElimStorePlain]: Eliminatee v_prenex_74 vanished before elimination [2021-07-14 19:17:26,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:26,620 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:26,620 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 19:17:26,633 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:26,930 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2021-07-14 19:17:26,930 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:26,930 INFO L518 ElimStorePlain]: Eliminatee v_prenex_68 vanished before elimination [2021-07-14 19:17:26,930 INFO L518 ElimStorePlain]: Eliminatee v_prenex_79 vanished before elimination [2021-07-14 19:17:26,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:26,959 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:26,960 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 19:17:26,961 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:27,241 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2021-07-14 19:17:27,241 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:27,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:27,286 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:27,287 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 19:17:27,290 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:27,557 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2021-07-14 19:17:27,557 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:27,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:27,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:27,596 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:27,596 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 19:17:27,598 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:27,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:27,632 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-14 19:17:27,632 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 19:17:27,637 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:27,894 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-07-14 19:17:27,894 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:27,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:17:27,920 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:27,920 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 19:17:27,938 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-07-14 19:17:28,190 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2021-07-14 19:17:28,191 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:17:28,254 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 19:17:28,254 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 54 variables, input treesize:1103, output treesize:175 [2021-07-14 19:17:28,419 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 19:17:28,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028962061] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:28,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:28,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 27 [2021-07-14 19:17:28,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164216937] [2021-07-14 19:17:28,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-14 19:17:28,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:28,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-14 19:17:28,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2021-07-14 19:17:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:28,421 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:28,421 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 19:17:28,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:28,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:28,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:28,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:28,988 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 49 [2021-07-14 19:17:29,420 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 65 [2021-07-14 19:17:29,688 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 62 [2021-07-14 19:17:29,875 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-07-14 19:17:30,064 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-07-14 19:17:30,435 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 107 [2021-07-14 19:17:30,795 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2021-07-14 19:17:31,974 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 155 DAG size of output: 143 [2021-07-14 19:17:32,322 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 78 [2021-07-14 19:17:34,493 WARN L205 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 307 DAG size of output: 263 [2021-07-14 19:17:35,706 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 236 DAG size of output: 113 [2021-07-14 19:17:36,009 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2021-07-14 19:17:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:17:36,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:36,450 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:36,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:36,450 INFO L82 PathProgramCache]: Analyzing trace with hash 486527590, now seen corresponding path program 5 times [2021-07-14 19:17:36,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:36,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609656715] [2021-07-14 19:17:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:36,574 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 19:17:36,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:36,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609656715] [2021-07-14 19:17:36,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609656715] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:36,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085705418] [2021-07-14 19:17:36,574 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 19:17:36,613 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 19:17:36,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:17:36,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-14 19:17:36,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:36,847 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 19:17:36,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085705418] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:36,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:36,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-07-14 19:17:36,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744853737] [2021-07-14 19:17:36,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-14 19:17:36,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:36,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-14 19:17:36,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-07-14 19:17:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:36,850 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:36,850 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 19:17:36,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:36,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:36,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:36,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:17:36,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:37,714 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-07-14 19:17:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:37,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:37,937 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:37,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1457565616, now seen corresponding path program 6 times [2021-07-14 19:17:37,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:37,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859835586] [2021-07-14 19:17:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:38,043 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 19:17:38,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:38,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859835586] [2021-07-14 19:17:38,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859835586] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:38,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529312043] [2021-07-14 19:17:38,045 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 19:17:38,086 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-07-14 19:17:38,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:17:38,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 19:17:38,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:38,344 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 19:17:38,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529312043] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:38,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:38,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 28 [2021-07-14 19:17:38,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805289376] [2021-07-14 19:17:38,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-14 19:17:38,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:38,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-14 19:17:38,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2021-07-14 19:17:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:38,347 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:38,347 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 19:17:38,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:38,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:38,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:38,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:38,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:38,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:17:38,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-07-14 19:17:38,717 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:38,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:38,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1160926222, now seen corresponding path program 7 times [2021-07-14 19:17:38,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:38,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119761715] [2021-07-14 19:17:38,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:38,837 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 19:17:38,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:38,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119761715] [2021-07-14 19:17:38,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119761715] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:38,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160749707] [2021-07-14 19:17:38,838 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 19:17:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:38,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 19:17:38,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:39,141 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 19:17:39,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160749707] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:39,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:39,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-07-14 19:17:39,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195199174] [2021-07-14 19:17:39,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-07-14 19:17:39,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:39,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-07-14 19:17:39,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2021-07-14 19:17:39,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:39,143 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:39,144 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 19:17:39,144 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:39,144 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:39,144 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:39,144 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:39,144 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:39,144 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:17:39,144 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:17:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:17:39,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-07-14 19:17:39,563 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:39,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:39,564 INFO L82 PathProgramCache]: Analyzing trace with hash 441689876, now seen corresponding path program 8 times [2021-07-14 19:17:39,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:39,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023712856] [2021-07-14 19:17:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:39,736 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 19:17:39,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:17:39,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023712856] [2021-07-14 19:17:39,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023712856] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:39,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389133368] [2021-07-14 19:17:39,736 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 19:17:39,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 19:17:39,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:17:39,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-14 19:17:39,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:17:40,117 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 19:17:40,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389133368] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:17:40,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:17:40,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 32 [2021-07-14 19:17:40,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995103691] [2021-07-14 19:17:40,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-07-14 19:17:40,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:17:40,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-07-14 19:17:40,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2021-07-14 19:17:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:40,123 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:17:40,123 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 19:17:40,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:40,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:40,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:40,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:40,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:40,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:17:40,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:17:40,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:17:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:17:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:17:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:17:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 19:17:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:17:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:17:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:17:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:17:40,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:17:40,560 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:17:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:17:40,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1337499210, now seen corresponding path program 9 times [2021-07-14 19:17:40,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:17:40,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364430535] [2021-07-14 19:17:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:17:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:17:49,732 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 147 [2021-07-14 19:17:50,053 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 54 [2021-07-14 19:17:50,802 WARN L205 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 405 DAG size of output: 255 [2021-07-14 19:17:51,406 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 73 [2021-07-14 19:17:54,601 WARN L205 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 845 DAG size of output: 655 [2021-07-14 19:17:56,916 WARN L205 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 650 DAG size of output: 123 [2021-07-14 19:18:04,620 WARN L205 SmtUtils]: Spent 7.69 s on a formula simplification. DAG size of input: 809 DAG size of output: 753 [2021-07-14 19:18:04,732 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 753 [2021-07-14 19:18:08,310 WARN L205 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 745 DAG size of output: 213 [2021-07-14 19:18:11,520 WARN L205 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 884 DAG size of output: 622 [2021-07-14 19:18:15,026 WARN L205 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 622 DAG size of output: 269 [2021-07-14 19:23:04,596 WARN L205 SmtUtils]: Spent 4.83 m on a formula simplification. DAG size of input: 1416 DAG size of output: 1744 [2021-07-14 19:23:05,259 WARN L205 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 1744 [2021-07-14 19:23:20,826 WARN L205 SmtUtils]: Spent 15.14 s on a formula simplification. DAG size of input: 1706 DAG size of output: 389 [2021-07-14 19:27:58,026 WARN L205 SmtUtils]: Spent 4.62 m on a formula simplification. DAG size of input: 1425 DAG size of output: 1594 [2021-07-14 19:27:58,652 WARN L205 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 1594 [2021-07-14 19:28:11,102 WARN L205 SmtUtils]: Spent 12.11 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