/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/threaded-sum-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 18:55:41,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 18:55:41,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 18:55:41,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 18:55:41,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 18:55:41,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 18:55:41,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 18:55:41,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 18:55:41,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 18:55:41,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 18:55:41,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 18:55:41,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 18:55:41,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 18:55:41,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 18:55:41,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 18:55:41,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 18:55:41,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 18:55:41,357 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 18:55:41,385 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 18:55:41,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 18:55:41,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 18:55:41,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 18:55:41,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 18:55:41,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 18:55:41,387 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 18:55:41,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 18:55:41,387 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 18:55:41,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 18:55:41,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 18:55:41,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 18:55:41,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 18:55:41,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 18:55:41,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 18:55:41,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 18:55:41,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 18:55:41,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 18:55:41,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 18:55:41,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 18:55:41,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 18:55:41,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 18:55:41,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 18:55:41,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 18:55:41,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 18:55:41,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 18:55:41,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 18:55:41,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 18:55:41,390 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 18:55:41,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 18:55:41,390 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 18:55:41,390 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 18:55:41,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 18:55:41,390 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 18:55:41,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 18:55:41,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 18:55:41,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 18:55:41,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 18:55:41,708 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 18:55:41,709 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 18:55:41,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl [2021-07-14 18:55:41,710 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl' [2021-07-14 18:55:41,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 18:55:41,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 18:55:41,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 18:55:41,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 18:55:41,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 18:55:41,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:41" (1/1) ... [2021-07-14 18:55:41,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:41" (1/1) ... [2021-07-14 18:55:41,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 18:55:41,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 18:55:41,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 18:55:41,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 18:55:41,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:41" (1/1) ... [2021-07-14 18:55:41,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:41" (1/1) ... [2021-07-14 18:55:41,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:41" (1/1) ... [2021-07-14 18:55:41,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:41" (1/1) ... [2021-07-14 18:55:41,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:41" (1/1) ... [2021-07-14 18:55:41,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:41" (1/1) ... [2021-07-14 18:55:41,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:41" (1/1) ... [2021-07-14 18:55:41,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 18:55:41,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 18:55:41,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 18:55:41,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 18:55:41,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:41" (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 18:55:41,932 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 18:55:41,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 18:55:41,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 18:55:41,932 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 18:55:41,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 18:55:41,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 18:55:41,933 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 18:55:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 18:55:41,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 18:55:41,933 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 18:55:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 18:55:41,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 18:55:41,934 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 18:55:42,087 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 18:55:42,087 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 18:55:42,089 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:55:42 BoogieIcfgContainer [2021-07-14 18:55:42,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 18:55:42,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 18:55:42,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 18:55:42,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 18:55:42,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:41" (1/2) ... [2021-07-14 18:55:42,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af85b6e and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:55:42, skipping insertion in model container [2021-07-14 18:55:42,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:55:42" (2/2) ... [2021-07-14 18:55:42,094 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl [2021-07-14 18:55:42,097 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 18:55:42,097 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 18:55:42,098 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 18:55:42,098 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 18:55:42,124 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 18:55:42,139 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 18:55:42,208 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 18:55:42,208 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 18:55:42,208 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 18:55:42,208 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 18:55:42,208 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 18:55:42,208 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 18:55:42,208 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 18:55:42,208 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 18:55:42,391 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:55:42,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:55:42,394 INFO L82 PathProgramCache]: Analyzing trace with hash 406005326, now seen corresponding path program 1 times [2021-07-14 18:55:42,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:55:42,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633913507] [2021-07-14 18:55:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:55:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:55:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-07-14 18:55:42,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:55:42,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633913507] [2021-07-14 18:55:42,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633913507] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 18:55:42,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 18:55:42,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 18:55:42,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653092751] [2021-07-14 18:55:42,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 18:55:42,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:55:42,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 18:55:42,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 18:55:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:42,553 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:55:42,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 18:55:42,554 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:42,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 18:55:42,600 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:55:42,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:55:42,601 INFO L82 PathProgramCache]: Analyzing trace with hash -665646629, now seen corresponding path program 2 times [2021-07-14 18:55:42,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:55:42,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629821227] [2021-07-14 18:55:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:55:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:55:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-14 18:55:42,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:55:42,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629821227] [2021-07-14 18:55:42,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629821227] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 18:55:42,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 18:55:42,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 18:55:42,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455370098] [2021-07-14 18:55:42,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 18:55:42,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:55:42,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 18:55:42,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 18:55:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:42,626 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:55:42,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 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 18:55:42,626 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:42,626 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:42,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 18:55:42,643 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:55:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:55:42,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1711156125, now seen corresponding path program 3 times [2021-07-14 18:55:42,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:55:42,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465798791] [2021-07-14 18:55:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:55:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:55:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 18:55:42,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:55:42,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465798791] [2021-07-14 18:55:42,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465798791] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 18:55:42,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 18:55:42,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-14 18:55:42,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273688576] [2021-07-14 18:55:42,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-14 18:55:42,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:55:42,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-14 18:55:42,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-14 18:55:42,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:42,682 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:55:42,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 18:55:42,682 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:42,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:42,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:42,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:55:42,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 18:55:42,754 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:55:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:55:42,754 INFO L82 PathProgramCache]: Analyzing trace with hash -105394693, now seen corresponding path program 4 times [2021-07-14 18:55:42,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:55:42,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570690494] [2021-07-14 18:55:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:55:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:55:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:55:42,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:55:42,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570690494] [2021-07-14 18:55:42,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570690494] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:55:42,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607331593] [2021-07-14 18:55:42,863 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 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 18:55:42,911 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 18:55:42,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 18:55:42,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-14 18:55:42,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:55:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:55:43,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607331593] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:55:43,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:55:43,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-07-14 18:55:43,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182935820] [2021-07-14 18:55:43,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 18:55:43,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:55:43,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 18:55:43,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-07-14 18:55:43,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:43,074 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:55:43,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 18:55:43,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:43,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:43,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:55:43,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:55:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:55:43,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:55:43,449 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:55:43,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:55:43,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1699129821, now seen corresponding path program 5 times [2021-07-14 18:55:43,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:55:43,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085125776] [2021-07-14 18:55:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:55:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:55:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:55:43,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:55:43,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085125776] [2021-07-14 18:55:43,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085125776] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:55:43,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68581666] [2021-07-14 18:55:43,801 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 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 18:55:43,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-07-14 18:55:43,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 18:55:43,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2021-07-14 18:55:43,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:55:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:55:44,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68581666] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:55:44,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:55:44,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2021-07-14 18:55:44,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098338796] [2021-07-14 18:55:44,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-07-14 18:55:44,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:55:44,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-07-14 18:55:44,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2021-07-14 18:55:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:44,603 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:55:44,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 30 states have internal predecessors, (66), 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 18:55:44,604 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:44,604 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:44,604 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:55:44,604 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:55:44,604 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:55:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:55:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 18:55:44,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:55:44,976 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:55:44,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:55:44,977 INFO L82 PathProgramCache]: Analyzing trace with hash -102015649, now seen corresponding path program 6 times [2021-07-14 18:55:44,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:55:44,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397699976] [2021-07-14 18:55:44,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:55:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:55:45,526 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 18:55:45,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:55:45,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397699976] [2021-07-14 18:55:45,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397699976] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:55:45,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089180915] [2021-07-14 18:55:45,526 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 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 18:55:45,607 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-07-14 18:55:45,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 18:55:45,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 22 conjunts are in the unsatisfiable core [2021-07-14 18:55:45,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:55:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:55:46,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089180915] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:55:46,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:55:46,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2021-07-14 18:55:46,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182691915] [2021-07-14 18:55:46,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-14 18:55:46,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:55:46,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-14 18:55:46,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2021-07-14 18:55:46,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:46,753 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:55:46,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 18:55:46,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:46,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:46,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:55:46,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:55:46,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 18:55:46,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:55:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:55:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 18:55:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 18:55:47,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:55:47,287 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:55:47,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:55:47,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1646662017, now seen corresponding path program 7 times [2021-07-14 18:55:47,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:55:47,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500296925] [2021-07-14 18:55:47,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:55:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:55:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-14 18:55:47,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:55:47,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500296925] [2021-07-14 18:55:47,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500296925] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:55:47,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23611118] [2021-07-14 18:55:47,818 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 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 18:55:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:55:47,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 25 conjunts are in the unsatisfiable core [2021-07-14 18:55:47,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:55:49,188 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-07-14 18:55:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:55:49,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23611118] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:55:49,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:55:49,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 36 [2021-07-14 18:55:49,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648639064] [2021-07-14 18:55:49,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-07-14 18:55:49,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:55:49,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-07-14 18:55:49,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2021-07-14 18:55:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:49,537 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:55:49,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 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 18:55:49,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:49,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:49,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:55:49,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:55:49,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 18:55:49,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 18:55:49,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:55:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:55:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 18:55:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 18:55:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 18:55:50,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:55:50,184 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:55:50,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:55:50,185 INFO L82 PathProgramCache]: Analyzing trace with hash -125884671, now seen corresponding path program 8 times [2021-07-14 18:55:50,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:55:50,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208746929] [2021-07-14 18:55:50,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:55:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:55:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-07-14 18:55:51,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:55:51,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208746929] [2021-07-14 18:55:51,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208746929] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:55:51,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201147297] [2021-07-14 18:55:51,217 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 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 18:55:51,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 18:55:51,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 18:55:51,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 30 conjunts are in the unsatisfiable core [2021-07-14 18:55:51,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:55:52,634 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2021-07-14 18:55:53,139 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 117 [2021-07-14 18:55:53,823 WARN L205 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 111 [2021-07-14 18:55:54,114 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-07-14 18:55:54,616 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 110 [2021-07-14 18:55:54,838 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-07-14 18:55:55,250 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 106 [2021-07-14 18:55:55,633 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2021-07-14 18:55:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:55:55,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201147297] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:55:55,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:55:55,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25] total 40 [2021-07-14 18:55:55,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172962159] [2021-07-14 18:55:55,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-07-14 18:55:55,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:55:55,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-07-14 18:55:55,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1411, Unknown=0, NotChecked=0, Total=1640 [2021-07-14 18:55:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:55,753 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:55:55,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 40 states have internal predecessors, (90), 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 18:55:55,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:55,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:55,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:55:55,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:55:55,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 18:55:55,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 18:55:55,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 18:55:55,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:55:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:55:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:55:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:55:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:55:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 18:55:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 18:55:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 18:55:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-14 18:55:56,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:55:56,765 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:55:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:55:56,765 INFO L82 PathProgramCache]: Analyzing trace with hash 2060646248, now seen corresponding path program 9 times [2021-07-14 18:55:56,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:55:56,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386166377] [2021-07-14 18:55:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:55:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:55:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 3 proven. 200 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-14 18:55:58,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:55:58,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386166377] [2021-07-14 18:55:58,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386166377] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:55:58,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705295497] [2021-07-14 18:55:58,579 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 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 18:55:58,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-07-14 18:55:58,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 18:55:58,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 42 conjunts are in the unsatisfiable core [2021-07-14 18:55:58,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:55:59,853 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-07-14 18:56:00,068 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-07-14 18:56:00,349 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-07-14 18:56:00,958 WARN L205 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 129 [2021-07-14 18:56:01,311 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-07-14 18:56:02,087 WARN L205 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 122 [2021-07-14 18:56:02,409 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-07-14 18:56:02,746 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-07-14 18:56:03,113 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-07-14 18:56:03,477 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-07-14 18:56:03,802 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-07-14 18:56:04,121 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-07-14 18:56:04,480 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-07-14 18:56:04,958 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-07-14 18:56:05,356 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-07-14 18:56:05,975 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 113 [2021-07-14 18:56:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:56:06,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705295497] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:56:06,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:56:06,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 33] total 53 [2021-07-14 18:56:06,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963321027] [2021-07-14 18:56:06,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-07-14 18:56:06,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:56:06,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-07-14 18:56:06,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=2538, Unknown=0, NotChecked=0, Total=2862 [2021-07-14 18:56:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:56:06,157 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:56:06,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 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 18:56:06,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:56:06,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:56:06,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:56:06,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:56:06,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 18:56:06,173 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 18:56:06,173 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 18:56:06,173 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-07-14 18:56:06,173 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:56:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 18:56:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 18:56:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 18:56:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:56:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 18:56:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 18:56:08,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 18:56:08,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 18:56:08,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-14 18:56:08,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-07-14 18:56:08,237 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:56:08,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:56:08,237 INFO L82 PathProgramCache]: Analyzing trace with hash 882336684, now seen corresponding path program 10 times [2021-07-14 18:56:08,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:56:08,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980071474] [2021-07-14 18:56:08,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:56:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:56:11,140 WARN L205 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 81 DAG size of output: 37 [2021-07-14 18:56:14,289 WARN L205 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 94 DAG size of output: 47 [2021-07-14 18:56:17,140 WARN L205 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 96 DAG size of output: 45 [2021-07-14 18:56:20,115 WARN L205 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2021-07-14 18:56:22,196 WARN L205 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 113 DAG size of output: 38 [2021-07-14 18:56:25,833 WARN L205 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 110 DAG size of output: 52 [2021-07-14 18:56:28,093 WARN L205 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 112 DAG size of output: 57 [2021-07-14 18:56:34,322 WARN L205 SmtUtils]: Spent 6.15 s on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2021-07-14 18:56:38,577 WARN L205 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 108 DAG size of output: 56 [2021-07-14 18:57:21,446 WARN L205 SmtUtils]: Spent 42.85 s on a formula simplification. DAG size of input: 146 DAG size of output: 128 [2021-07-14 18:57:21,731 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 28 [2021-07-14 18:57:47,773 WARN L205 SmtUtils]: Spent 26.04 s on a formula simplification. DAG size of input: 151 DAG size of output: 164 [2021-07-14 18:58:07,268 WARN L205 SmtUtils]: Spent 19.45 s on a formula simplification. DAG size of input: 154 DAG size of output: 171 [2021-07-14 18:58:55,196 WARN L205 SmtUtils]: Spent 47.88 s on a formula simplification. DAG size of input: 176 DAG size of output: 193 [2021-07-14 18:58:55,478 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 26 [2021-07-14 18:59:33,036 WARN L205 SmtUtils]: Spent 37.55 s on a formula simplification. DAG size of input: 175 DAG size of output: 195 [2021-07-14 18:59:33,354 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 28 [2021-07-14 19:00:10,243 WARN L205 SmtUtils]: Spent 36.89 s on a formula simplification. DAG size of input: 199 DAG size of output: 255 [2021-07-14 19:00:10,803 WARN L205 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 31 [2021-07-14 19:00:41,242 WARN L205 SmtUtils]: Spent 30.44 s on a formula simplification. DAG size of input: 199 DAG size of output: 237 [2021-07-14 19:00:41,697 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 22 [2021-07-14 19:01:22,979 WARN L205 SmtUtils]: Spent 41.28 s on a formula simplification. DAG size of input: 199 DAG size of output: 265 [2021-07-14 19:01:23,415 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 22 [2021-07-14 19:02:09,915 WARN L205 SmtUtils]: Spent 46.50 s on a formula simplification. DAG size of input: 169 DAG size of output: 223 [2021-07-14 19:02:19,828 WARN L205 SmtUtils]: Spent 9.81 s on a formula simplification. DAG size of input: 144 DAG size of output: 104 [2021-07-14 19:02:20,067 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 21 [2021-07-14 19:02:30,255 WARN L205 SmtUtils]: Spent 10.19 s on a formula simplification. DAG size of input: 150 DAG size of output: 103 [2021-07-14 19:02:30,500 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 21 [2021-07-14 19:02:41,279 WARN L205 SmtUtils]: Spent 10.78 s on a formula simplification. DAG size of input: 148 DAG size of output: 109 [2021-07-14 19:02:41,528 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 22 [2021-07-14 19:02:42,817 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 112 DAG size of output: 60 [2021-07-14 19:02:43,459 WARN L205 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 55 [2021-07-14 19:02:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 3 proven. 241 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-07-14 19:02:43,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:02:43,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980071474] [2021-07-14 19:02:43,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980071474] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:02:43,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627377622] [2021-07-14 19:02:43,633 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 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 19:02:43,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 19:02:43,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:02:43,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 43 conjunts are in the unsatisfiable core [2021-07-14 19:02:43,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:02:45,131 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-07-14 19:02:45,373 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-07-14 19:02:45,653 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-07-14 19:02:46,334 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 137 [2021-07-14 19:02:46,717 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-07-14 19:02:47,359 WARN L205 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 130 [2021-07-14 19:02:47,672 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-07-14 19:02:48,041 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-07-14 19:02:48,444 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-07-14 19:02:48,883 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-07-14 19:02:49,338 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-07-14 19:02:49,724 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-07-14 19:02:50,098 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-07-14 19:02:50,538 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-07-14 19:02:51,122 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-07-14 19:02:51,600 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-07-14 19:02:52,509 WARN L205 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 129 [2021-07-14 19:02:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:02:52,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627377622] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:02:52,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:02:52,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 35] total 55 [2021-07-14 19:02:52,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762302886] [2021-07-14 19:02:52,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-07-14 19:02:52,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:02:52,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-07-14 19:02:52,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=2730, Unknown=0, NotChecked=0, Total=3080 [2021-07-14 19:02:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:02:52,814 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:02:52,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 2.107142857142857) internal successors, (118), 55 states have internal predecessors, (118), 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 19:02:52,814 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 19:02:52,814 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 19:02:52,814 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 19:02:52,814 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:02:52,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:02:52,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:02:52,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:02:52,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 19:02:52,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-07-14 19:02:52,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:02:54,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 19:02:54,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 19:02:54,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 19:02:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:02:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:02:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:02:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:02:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 19:02:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-14 19:02:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-14 19:02:54,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-07-14 19:02:54,873 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:02:54,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:02:54,874 INFO L82 PathProgramCache]: Analyzing trace with hash 27278, now seen corresponding path program 11 times [2021-07-14 19:02:54,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:02:54,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750880141] [2021-07-14 19:02:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:02:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:02:56,717 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 93 [2021-07-14 19:02:56,866 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 28 [2021-07-14 19:02:57,029 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 69 [2021-07-14 19:02:57,363 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 65 [2021-07-14 19:02:57,715 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 105 [2021-07-14 19:02:58,017 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 96 [2021-07-14 19:02:58,173 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 28 [2021-07-14 19:02:58,683 WARN L205 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 118 [2021-07-14 19:02:58,907 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 29 [2021-07-14 19:02:59,392 WARN L205 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 115 [2021-07-14 19:02:59,626 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 26 [2021-07-14 19:02:59,893 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 101 [2021-07-14 19:03:00,247 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 130 [2021-07-14 19:03:00,761 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2021-07-14 19:03:00,988 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 23 [2021-07-14 19:03:01,406 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 121 [2021-07-14 19:03:01,639 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 29 [2021-07-14 19:03:01,877 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 89 [2021-07-14 19:03:02,059 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 24 [2021-07-14 19:03:02,395 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 93 [2021-07-14 19:03:02,608 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 24 [2021-07-14 19:03:02,929 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 81 [2021-07-14 19:03:03,088 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 27 [2021-07-14 19:03:03,268 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 65 [2021-07-14 19:03:03,419 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 22 [2021-07-14 19:03:03,677 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 7 proven. 366 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-14 19:03:03,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:03:03,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750880141] [2021-07-14 19:03:03,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750880141] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:03:03,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081137216] [2021-07-14 19:03:03,678 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 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 19:03:03,755 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-07-14 19:03:03,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:03:03,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 46 conjunts are in the unsatisfiable core [2021-07-14 19:03:03,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:03:04,990 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-14 19:03:05,791 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 128 [2021-07-14 19:03:06,529 WARN L205 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 152 [2021-07-14 19:03:07,555 WARN L205 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 137 [2021-07-14 19:03:08,792 WARN L205 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 172 [2021-07-14 19:03:09,627 WARN L205 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 158 [2021-07-14 19:03:10,811 WARN L205 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 161 [2021-07-14 19:03:11,492 WARN L205 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-07-14 19:03:12,655 WARN L205 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 166 [2021-07-14 19:03:13,584 WARN L205 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 169 [2021-07-14 19:03:14,498 WARN L205 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 173 [2021-07-14 19:03:15,809 WARN L205 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 198 [2021-07-14 19:03:16,694 WARN L205 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-07-14 19:03:17,464 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-07-14 19:03:18,153 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-07-14 19:03:19,436 WARN L205 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 203 [2021-07-14 19:03:20,119 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2021-07-14 19:03:21,498 WARN L205 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2021-07-14 19:03:22,697 WARN L205 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2021-07-14 19:03:23,627 WARN L205 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2021-07-14 19:03:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:03:24,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081137216] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:03:24,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:03:24,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 38] total 68 [2021-07-14 19:03:24,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100256905] [2021-07-14 19:03:24,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-07-14 19:03:24,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:03:24,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-07-14 19:03:24,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=4203, Unknown=0, NotChecked=0, Total=4692 [2021-07-14 19:03:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:03:24,158 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:03:24,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 68 states have internal predecessors, (146), 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 19:03:24,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 19:03:24,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 19:03:24,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 19:03:24,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:03:24,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:03:24,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:03:24,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:03:24,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 19:03:24,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-07-14 19:03:24,159 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-07-14 19:03:24,159 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:03:27,730 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2021-07-14 19:03:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 19:03:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 19:03:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 19:03:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:03:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:03:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:03:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:03:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 19:03:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-14 19:03:28,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-14 19:03:28,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-14 19:03:28,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:03:28,665 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:03:28,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:03:28,665 INFO L82 PathProgramCache]: Analyzing trace with hash 697993246, now seen corresponding path program 12 times [2021-07-14 19:03:28,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:03:28,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128622663] [2021-07-14 19:03:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:03:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:03:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2021-07-14 19:03:28,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:03:28,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128622663] [2021-07-14 19:03:28,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128622663] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 19:03:28,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 19:03:28,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 19:03:28,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815147112] [2021-07-14 19:03:28,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 19:03:28,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:03:28,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 19:03:28,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 19:03:28,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:03:28,684 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:03:28,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 19:03:28,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 19:03:28,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 19:03:28,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 19:03:28,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:03:28,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:03:28,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:03:28,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:03:28,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 19:03:28,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-07-14 19:03:28,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-07-14 19:03:28,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-07-14 19:03:28,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 19:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 19:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 19:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 19:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-14 19:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-14 19:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-14 19:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 19:03:28,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-07-14 19:03:28,743 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:03:28,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:03:28,743 INFO L82 PathProgramCache]: Analyzing trace with hash 904162500, now seen corresponding path program 13 times [2021-07-14 19:03:28,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:03:28,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922284498] [2021-07-14 19:03:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:03:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:03:29,643 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 47 [2021-07-14 19:03:29,889 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 43 [2021-07-14 19:03:30,253 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 51 [2021-07-14 19:03:30,538 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 44 [2021-07-14 19:03:30,791 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 48 [2021-07-14 19:03:31,042 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 45 [2021-07-14 19:03:31,321 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 45 [2021-07-14 19:03:31,582 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 44 [2021-07-14 19:03:36,033 WARN L205 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 124 DAG size of output: 52 [2021-07-14 19:03:36,485 WARN L205 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2021-07-14 19:03:38,049 WARN L205 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2021-07-14 19:03:38,247 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 30 [2021-07-14 19:03:40,014 WARN L205 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 129 DAG size of output: 109 [2021-07-14 19:03:42,618 WARN L205 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 134 DAG size of output: 72 [2021-07-14 19:03:43,406 WARN L205 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 57 [2021-07-14 19:03:44,281 WARN L205 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 58 [2021-07-14 19:03:45,029 WARN L205 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 57 [2021-07-14 19:03:45,159 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 24 [2021-07-14 19:03:45,901 WARN L205 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 63 [2021-07-14 19:03:46,036 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 23 [2021-07-14 19:03:46,140 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 52 [2021-07-14 19:03:46,408 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2021-07-14 19:03:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 17 proven. 354 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-07-14 19:03:46,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:03:46,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922284498] [2021-07-14 19:03:46,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922284498] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:03:46,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881938117] [2021-07-14 19:03:46,999 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:03:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:03:47,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 48 conjunts are in the unsatisfiable core [2021-07-14 19:03:47,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:03:48,606 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2021-07-14 19:03:49,210 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-07-14 19:03:49,540 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-07-14 19:03:49,924 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-07-14 19:03:50,799 WARN L205 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 169 [2021-07-14 19:03:51,266 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2021-07-14 19:03:52,155 WARN L205 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 162 [2021-07-14 19:03:52,597 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-07-14 19:03:53,116 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-07-14 19:03:53,668 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2021-07-14 19:03:54,256 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2021-07-14 19:03:56,049 WARN L205 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 254 DAG size of output: 253 [2021-07-14 19:03:58,013 WARN L205 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 306 DAG size of output: 280 [2021-07-14 19:03:58,663 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 544 DAG size of output: 438 [2021-07-14 19:04:02,052 WARN L205 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 429 DAG size of output: 320 [2021-07-14 19:04:03,485 WARN L205 SmtUtils]: Spent 981.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2021-07-14 19:04:06,671 WARN L205 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 316 DAG size of output: 297 [2021-07-14 19:04:08,931 WARN L205 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 278 DAG size of output: 277 [2021-07-14 19:04:10,079 WARN L205 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2021-07-14 19:04:12,257 WARN L205 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 376 DAG size of output: 273 [2021-07-14 19:04:13,848 WARN L205 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2021-07-14 19:04:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:04:14,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881938117] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:04:14,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:04:14,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 41] total 61 [2021-07-14 19:04:14,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128863891] [2021-07-14 19:04:14,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-07-14 19:04:14,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:04:14,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-07-14 19:04:14,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=3419, Unknown=0, NotChecked=0, Total=3782 [2021-07-14 19:04:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:04:14,354 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:04:14,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 2.129032258064516) internal successors, (132), 61 states have internal predecessors, (132), 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 19:04:14,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 19:04:14,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 19:04:14,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 19:04:14,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:04:14,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:04:14,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:04:14,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:04:14,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 19:04:14,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-07-14 19:04:14,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-07-14 19:04:14,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-07-14 19:04:14,355 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 19:04:14,355 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 19:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 19:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 19:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 19:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-14 19:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-14 19:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-14 19:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 19:04:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-14 19:04:19,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable276 [2021-07-14 19:04:19,142 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:04:19,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:04:19,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1498289765, now seen corresponding path program 14 times [2021-07-14 19:04:19,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:04:19,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718822678] [2021-07-14 19:04:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:04:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:04:21,528 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2021-07-14 19:04:23,845 WARN L205 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 100 DAG size of output: 46 [2021-07-14 19:04:26,018 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 98 DAG size of output: 41 [2021-07-14 19:04:28,589 WARN L205 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 155 DAG size of output: 67 [2021-07-14 19:04:31,040 WARN L205 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 165 DAG size of output: 57 [2021-07-14 19:04:31,165 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2021-07-14 19:04:34,354 WARN L205 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 190 DAG size of output: 49 [2021-07-14 19:04:38,729 WARN L205 SmtUtils]: Spent 4.26 s on a formula simplification. DAG size of input: 198 DAG size of output: 36 [2021-07-14 19:04:43,086 WARN L205 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 225 DAG size of output: 58 [2021-07-14 19:04:48,224 WARN L205 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 247 DAG size of output: 66 [2021-07-14 19:04:48,362 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-07-14 19:04:53,767 WARN L205 SmtUtils]: Spent 5.40 s on a formula simplification. DAG size of input: 245 DAG size of output: 69 [2021-07-14 19:04:53,916 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2021-07-14 19:04:59,483 WARN L205 SmtUtils]: Spent 5.56 s on a formula simplification. DAG size of input: 243 DAG size of output: 67 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown