/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-None-NoLbe.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 [2021-07-13 22:52:26,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 22:52:26,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 22:52:26,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 22:52:26,318 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-None-NoLbe.epf [2021-07-13 22:52:26,355 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 22:52:26,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 22:52:26,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 22:52:26,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 22:52:26,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 22:52:26,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 22:52:26,359 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 22:52:26,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 22:52:26,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 22:52:26,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 22:52:26,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 22:52:26,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 22:52:26,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 22:52:26,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 22:52:26,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 22:52:26,361 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 22:52:26,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 22:52:26,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 22:52:26,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 22:52:26,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 22:52:26,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 22:52:26,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 22:52:26,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 22:52:26,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 22:52:26,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 22:52:26,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 22:52:26,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 22:52:26,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 22:52:26,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 22:52:26,363 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 22:52:26,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-13 22:52:26,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 22:52:26,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 22:52:26,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 22:52:26,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 22:52:26,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 22:52:26,691 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 22:52:26,693 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 22:52:26,693 INFO L432 ainManager$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 [2021-07-13 22:52:26,693 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl' [2021-07-13 22:52:26,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 22:52:26,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 22:52:26,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 22:52:26,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 22:52:26,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 22:52:26,736 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 13.07 10:52:26" (1/1) ... [2021-07-13 22:52:26,743 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 13.07 10:52:26" (1/1) ... [2021-07-13 22:52:26,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 22:52:26,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 22:52:26,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 22:52:26,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 22:52:26,761 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 13.07 10:52:26" (1/1) ... [2021-07-13 22:52:26,761 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 13.07 10:52:26" (1/1) ... [2021-07-13 22:52:26,762 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 13.07 10:52:26" (1/1) ... [2021-07-13 22:52:26,762 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 13.07 10:52:26" (1/1) ... [2021-07-13 22:52:26,767 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 13.07 10:52:26" (1/1) ... [2021-07-13 22:52:26,770 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 13.07 10:52:26" (1/1) ... [2021-07-13 22:52:26,770 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 13.07 10:52:26" (1/1) ... [2021-07-13 22:52:26,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 22:52:26,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 22:52:26,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 22:52:26,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 22:52:26,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:52:26" (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 [2021-07-13 22:52:26,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 22:52:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 22:52:26,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 22:52:26,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 22:52:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 22:52:26,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 22:52:26,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 22:52:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 22:52:26,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 22:52:26,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-13 22:52:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-13 22:52:26,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-13 22:52:26,837 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 22:52:27,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 22:52:27,123 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-13 22:52:27,124 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:52:27 BoogieIcfgContainer [2021-07-13 22:52:27,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 22:52:27,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 22:52:27,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 22:52:27,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 22:52:27,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 10:52:26" (1/2) ... [2021-07-13 22:52:27,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14531631 and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:52:27, skipping insertion in model container [2021-07-13 22:52:27,130 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 13.07 10:52:27" (2/2) ... [2021-07-13 22:52:27,131 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl [2021-07-13 22:52:27,136 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 22:52:27,136 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 22:52:27,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 22:52:27,137 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 22:52:27,206 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-13 22:52:27,246 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 [2021-07-13 22:52:27,309 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 22:52:27,310 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 22:52:27,310 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 22:52:27,311 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 22:52:27,311 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 22:52:27,311 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 22:52:27,311 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 22:52:27,311 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 22:52:27,326 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow [2021-07-13 22:52:27,358 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 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) [2021-07-13 22:52:27,375 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:52:27,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:52:27,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1880798164, now seen corresponding path program 1 times [2021-07-13 22:52:27,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:52:27,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452067625] [2021-07-13 22:52:27,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:52:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:52:27,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-13 22:52:27,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:52:27,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452067625] [2021-07-13 22:52:27,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452067625] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 22:52:27,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 22:52:27,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 22:52:27,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007441604] [2021-07-13 22:52:27,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 22:52:27,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:52:27,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 22:52:27,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 22:52:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:52:27,598 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:52:27,598 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) [2021-07-13 22:52:27,598 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:52:27,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:52:27,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 22:52:27,660 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:52:27,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:52:27,661 INFO L82 PathProgramCache]: Analyzing trace with hash -764861424, now seen corresponding path program 2 times [2021-07-13 22:52:27,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:52:27,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102886457] [2021-07-13 22:52:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:52:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:52:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-07-13 22:52:27,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:52:27,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102886457] [2021-07-13 22:52:27,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102886457] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 22:52:27,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 22:52:27,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 22:52:27,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059183665] [2021-07-13 22:52:27,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 22:52:27,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:52:27,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 22:52:27,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 22:52:27,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:52:27,713 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:52:27,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-07-13 22:52:27,714 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:52:27,714 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:52:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:52:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:52:27,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 22:52:27,740 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:52:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:52:27,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1250046437, now seen corresponding path program 3 times [2021-07-13 22:52:27,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:52:27,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771220500] [2021-07-13 22:52:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:52:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:52:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:52:28,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:52:28,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771220500] [2021-07-13 22:52:28,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771220500] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:52:28,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258881678] [2021-07-13 22:52:28,499 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 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 [2021-07-13 22:52:28,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-13 22:52:28,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 22:52:28,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core [2021-07-13 22:52:28,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 22:52:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:52:29,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258881678] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:52:29,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 22:52:29,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-07-13 22:52:29,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656666141] [2021-07-13 22:52:29,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-07-13 22:52:29,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:52:29,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-07-13 22:52:29,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2021-07-13 22:52:29,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:52:29,846 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:52:29,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 32 states have internal predecessors, (70), 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) [2021-07-13 22:52:29,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:52:29,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:52:29,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:52:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:52:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:52:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 22:52:30,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 22:52:30,475 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:52:30,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:52:30,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1155907095, now seen corresponding path program 4 times [2021-07-13 22:52:30,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:52:30,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954231323] [2021-07-13 22:52:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:52:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:52:31,587 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 24 [2021-07-13 22:52:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-13 22:52:32,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:52:32,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954231323] [2021-07-13 22:52:32,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954231323] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:52:32,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929748207] [2021-07-13 22:52:32,147 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 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 [2021-07-13 22:52:32,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 22:52:32,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 22:52:32,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 31 conjunts are in the unsatisfiable core [2021-07-13 22:52:32,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 22:52:33,437 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-07-13 22:52:33,640 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-07-13 22:52:33,836 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-07-13 22:52:34,128 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-07-13 22:52:34,343 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-07-13 22:52:34,926 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2021-07-13 22:52:35,360 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2021-07-13 22:52:35,731 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-07-13 22:52:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:52:35,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929748207] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:52:35,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 22:52:35,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 39 [2021-07-13 22:52:35,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572562753] [2021-07-13 22:52:35,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-07-13 22:52:35,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:52:35,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-07-13 22:52:35,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1352, Unknown=0, NotChecked=0, Total=1560 [2021-07-13 22:52:35,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:52:35,903 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:52:35,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.225) internal successors, (89), 39 states have internal predecessors, (89), 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) [2021-07-13 22:52:35,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:52:35,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:52:35,904 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-13 22:52:35,904 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:52:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:52:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:52:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 22:52:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-13 22:52:36,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-07-13 22:52:36,729 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:52:36,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:52:36,729 INFO L82 PathProgramCache]: Analyzing trace with hash 365949951, now seen corresponding path program 5 times [2021-07-13 22:52:36,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:52:36,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108691262] [2021-07-13 22:52:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:52:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:52:38,375 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 63 [2021-07-13 22:52:38,528 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 26 [2021-07-13 22:52:38,717 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 61 [2021-07-13 22:52:38,904 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2021-07-13 22:52:39,032 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 62 [2021-07-13 22:52:39,164 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2021-07-13 22:52:39,411 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 66 [2021-07-13 22:52:39,616 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 60 [2021-07-13 22:52:39,762 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 29 [2021-07-13 22:52:39,919 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 57 [2021-07-13 22:52:40,059 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2021-07-13 22:52:40,235 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2021-07-13 22:52:40,496 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 48 [2021-07-13 22:52:40,739 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 46 [2021-07-13 22:52:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 2 proven. 262 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-07-13 22:52:41,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:52:41,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108691262] [2021-07-13 22:52:41,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108691262] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:52:41,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563564874] [2021-07-13 22:52:41,088 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 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 [2021-07-13 22:52:41,143 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-07-13 22:52:41,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 22:52:41,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 40 conjunts are in the unsatisfiable core [2021-07-13 22:52:41,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 22:52:42,477 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-07-13 22:52:42,717 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-07-13 22:52:42,971 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-07-13 22:52:43,509 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 119 [2021-07-13 22:52:43,892 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-07-13 22:52:44,238 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-07-13 22:52:44,679 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-07-13 22:52:45,502 WARN L205 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 138 [2021-07-13 22:52:46,156 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 132 [2021-07-13 22:52:46,704 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-07-13 22:52:47,342 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-07-13 22:52:47,797 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-07-13 22:52:48,277 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-07-13 22:52:49,412 WARN L205 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2021-07-13 22:52:50,111 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-07-13 22:52:50,450 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2021-07-13 22:52:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:52:50,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563564874] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:52:50,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 22:52:50,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33] total 54 [2021-07-13 22:52:50,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063909518] [2021-07-13 22:52:50,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-07-13 22:52:50,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:52:50,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-07-13 22:52:50,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=2708, Unknown=0, NotChecked=0, Total=2970 [2021-07-13 22:52:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:52:50,551 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:52:50,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 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) [2021-07-13 22:52:50,551 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:52:50,551 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:52:50,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-13 22:52:50,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-13 22:52:50,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:52:53,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:52:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:52:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 22:52:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-13 22:52:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 22:52:53,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-07-13 22:52:53,414 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:52:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:52:53,414 INFO L82 PathProgramCache]: Analyzing trace with hash 62244983, now seen corresponding path program 6 times [2021-07-13 22:52:53,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:52:53,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012954136] [2021-07-13 22:52:53,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:52:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:52:55,027 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 25 [2021-07-13 22:52:56,432 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 2 proven. 388 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-13 22:52:56,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:52:56,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012954136] [2021-07-13 22:52:56,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012954136] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:52:56,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628611728] [2021-07-13 22:52:56,433 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 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 [2021-07-13 22:52:56,499 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-07-13 22:52:56,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 22:52:56,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 43 conjunts are in the unsatisfiable core [2021-07-13 22:52:56,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 22:52:58,336 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-07-13 22:52:58,739 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-07-13 22:52:59,597 WARN L205 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 158 [2021-07-13 22:53:00,648 WARN L205 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 183 [2021-07-13 22:53:01,313 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2021-07-13 22:53:02,365 WARN L205 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 178 [2021-07-13 22:53:03,688 WARN L205 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 187 [2021-07-13 22:53:04,773 WARN L205 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 173 [2021-07-13 22:53:05,877 WARN L205 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 175 [2021-07-13 22:53:06,601 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-07-13 22:53:08,007 WARN L205 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 228 [2021-07-13 22:53:08,827 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2021-07-13 22:53:09,684 WARN L205 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-07-13 22:53:10,412 WARN L205 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2021-07-13 22:53:11,402 WARN L205 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2021-07-13 22:53:12,489 WARN L205 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2021-07-13 22:53:14,364 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 240 DAG size of output: 239 [2021-07-13 22:53:14,837 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-07-13 22:53:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:53:14,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628611728] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:53:14,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 22:53:14,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 38] total 65 [2021-07-13 22:53:14,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577228924] [2021-07-13 22:53:14,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-07-13 22:53:14,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:53:14,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-07-13 22:53:14,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=3801, Unknown=0, NotChecked=0, Total=4290 [2021-07-13 22:53:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:53:14,960 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:53:14,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 65 states have internal predecessors, (139), 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) [2021-07-13 22:53:14,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:53:14,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:53:14,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-13 22:53:14,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-13 22:53:14,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-13 22:53:14,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:53:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:53:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:53:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 22:53:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-13 22:53:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 22:53:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 22:53:18,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 22:53:18,105 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:53:18,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:53:18,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1803151143, now seen corresponding path program 7 times [2021-07-13 22:53:18,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:53:18,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391926013] [2021-07-13 22:53:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:53:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:53:28,302 WARN L205 SmtUtils]: Spent 9.19 s on a formula simplification. DAG size of input: 133 DAG size of output: 28 [2021-07-13 22:53:37,207 WARN L205 SmtUtils]: Spent 8.87 s on a formula simplification. DAG size of input: 133 DAG size of output: 29 [2021-07-13 22:53:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 11 proven. 452 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-07-13 22:53:37,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:53:37,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391926013] [2021-07-13 22:53:37,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391926013] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:53:37,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939591598] [2021-07-13 22:53:37,543 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 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 [2021-07-13 22:53:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:53:37,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 46 conjunts are in the unsatisfiable core [2021-07-13 22:53:37,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 22:53:38,897 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 22:53:39,635 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-07-13 22:53:40,186 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 126 [2021-07-13 22:53:40,947 WARN L205 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 151 [2021-07-13 22:53:41,396 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-07-13 22:53:41,794 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-07-13 22:53:42,321 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2021-07-13 22:53:43,290 WARN L205 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 168 [2021-07-13 22:53:44,114 WARN L205 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 167 [2021-07-13 22:53:45,063 WARN L205 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 178 [2021-07-13 22:53:45,745 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2021-07-13 22:53:46,848 WARN L205 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2021-07-13 22:53:48,023 WARN L205 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2021-07-13 22:53:50,121 WARN L205 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 336 DAG size of output: 287 [2021-07-13 22:53:51,121 WARN L205 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2021-07-13 22:53:53,487 WARN L205 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 317 DAG size of output: 303 [2021-07-13 22:53:55,463 WARN L205 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 305 DAG size of output: 304 [2021-07-13 22:53:55,793 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 414 DAG size of output: 318 [2021-07-13 22:53:55,903 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 414 DAG size of output: 318 [2021-07-13 22:53:56,996 WARN L205 SmtUtils]: Spent 880.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2021-07-13 22:53:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 0 proven. 521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:53:57,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939591598] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:53:57,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 22:53:57,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 40] total 59 [2021-07-13 22:53:57,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781132746] [2021-07-13 22:53:57,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-07-13 22:53:57,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:53:57,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-07-13 22:53:57,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=3069, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 22:53:57,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:53:57,196 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:53:57,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.2666666666666666) internal successors, (136), 59 states have internal predecessors, (136), 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) [2021-07-13 22:53:57,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:53:57,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:53:57,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-13 22:53:57,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-13 22:53:57,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-07-13 22:53:57,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-07-13 22:53:57,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:54:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:54:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:54:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 22:54:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-13 22:54:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 22:54:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 22:54:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 22:54:00,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 22:54:00,789 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:54:00,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:54:00,789 INFO L82 PathProgramCache]: Analyzing trace with hash 529580274, now seen corresponding path program 8 times [2021-07-13 22:54:00,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:54:00,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815636156] [2021-07-13 22:54:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:54:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:54:03,046 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 42 [2021-07-13 22:54:03,420 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 42 [2021-07-13 22:54:03,853 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 42 [2021-07-13 22:54:04,197 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 36 [2021-07-13 22:54:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 23 proven. 1230 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-07-13 22:54:05,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 22:54:05,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815636156] [2021-07-13 22:54:05,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815636156] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:54:05,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147167791] [2021-07-13 22:54:05,429 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 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 [2021-07-13 22:54:05,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 22:54:05,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 22:54:05,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 68 conjunts are in the unsatisfiable core [2021-07-13 22:54:05,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 22:54:07,271 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2021-07-13 22:54:08,208 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-07-13 22:54:08,614 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-07-13 22:54:09,086 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-07-13 22:54:09,985 WARN L205 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 177 [2021-07-13 22:54:10,962 WARN L205 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2021-07-13 22:54:11,487 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-07-13 22:54:12,225 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2021-07-13 22:54:13,458 WARN L205 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 218 [2021-07-13 22:54:14,692 WARN L205 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 202 [2021-07-13 22:54:15,931 WARN L205 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 200 [2021-07-13 22:54:16,778 WARN L205 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-07-13 22:54:18,419 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 303 DAG size of output: 253 [2021-07-13 22:54:19,522 WARN L205 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2021-07-13 22:54:20,386 WARN L205 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2021-07-13 22:54:21,562 WARN L205 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2021-07-13 22:54:22,843 WARN L205 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2021-07-13 22:54:23,222 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 302 [2021-07-13 22:54:24,339 WARN L205 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2021-07-13 22:54:24,632 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 376 DAG size of output: 317 [2021-07-13 22:54:25,819 WARN L205 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2021-07-13 22:54:26,023 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 471 DAG size of output: 342 [2021-07-13 22:54:26,128 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 471 DAG size of output: 342 [2021-07-13 22:54:27,368 WARN L205 SmtUtils]: Spent 916.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2021-07-13 22:54:27,862 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 431 DAG size of output: 352 [2021-07-13 22:54:27,988 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 431 DAG size of output: 352 [2021-07-13 22:54:29,229 WARN L205 SmtUtils]: Spent 931.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-07-13 22:54:29,604 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 438 DAG size of output: 368 [2021-07-13 22:54:29,721 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 438 DAG size of output: 368 [2021-07-13 22:54:31,063 WARN L205 SmtUtils]: Spent 996.00 ms on a formula simplification that was a NOOP. DAG size: 368 [2021-07-13 22:54:32,527 WARN L205 SmtUtils]: Spent 990.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2021-07-13 22:54:32,979 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 453 DAG size of output: 385 [2021-07-13 22:54:33,138 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 453 DAG size of output: 385 [2021-07-13 22:54:34,636 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 385 [2021-07-13 22:54:35,102 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 476 DAG size of output: 401 [2021-07-13 22:54:35,269 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 476 DAG size of output: 401 [2021-07-13 22:54:36,808 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 401 [2021-07-13 22:54:37,286 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 599 DAG size of output: 431 [2021-07-13 22:54:37,451 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 599 DAG size of output: 431 [2021-07-13 22:54:39,247 WARN L205 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 431 [2021-07-13 22:54:39,353 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 445 DAG size of output: 443 [2021-07-13 22:54:39,688 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 538 DAG size of output: 442 [2021-07-13 22:54:39,898 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 538 DAG size of output: 442 [2021-07-13 22:54:41,752 WARN L205 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 442 [2021-07-13 22:54:42,459 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 544 DAG size of output: 459 [2021-07-13 22:54:42,640 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 544 DAG size of output: 459 [2021-07-13 22:54:44,578 WARN L205 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 459 [2021-07-13 22:54:44,695 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 462 DAG size of output: 462 [2021-07-13 22:54:44,901 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 458 DAG size of output: 458 [2021-07-13 22:54:46,852 WARN L205 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 458 [2021-07-13 22:54:46,963 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 458 DAG size of output: 458 [2021-07-13 22:54:47,496 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 555 DAG size of output: 475 [2021-07-13 22:54:47,724 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 555 DAG size of output: 475 [2021-07-13 22:54:49,748 WARN L205 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 475 [2021-07-13 22:54:49,865 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 488 DAG size of output: 487 [2021-07-13 22:54:50,199 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 711 DAG size of output: 617 [2021-07-13 22:54:50,437 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 711 DAG size of output: 617 [2021-07-13 22:54:53,840 WARN L205 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 617 DAG size of output: 465 [2021-07-13 22:54:53,946 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 463 DAG size of output: 463 [2021-07-13 22:54:54,150 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 463 DAG size of output: 463 [2021-07-13 22:54:54,348 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 477 DAG size of output: 475 [2021-07-13 22:54:54,624 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 650 DAG size of output: 493 [2021-07-13 22:54:54,840 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 660 DAG size of output: 498 [2021-07-13 22:54:55,046 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 660 DAG size of output: 498 [2021-07-13 22:54:57,181 WARN L205 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 498 [2021-07-13 22:54:57,319 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 502 DAG size of output: 502 [2021-07-13 22:54:59,474 WARN L205 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 498 [2021-07-13 22:54:59,601 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 498 DAG size of output: 498 [2021-07-13 22:54:59,844 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 511 [2021-07-13 22:55:00,233 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 608 DAG size of output: 469 [2021-07-13 22:55:00,504 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 608 DAG size of output: 469 [2021-07-13 22:55:02,894 WARN L205 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 469 [2021-07-13 22:55:03,097 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 472 DAG size of output: 472 [2021-07-13 22:55:07,601 WARN L205 SmtUtils]: Spent 3.83 s on a formula simplification. DAG size of input: 472 DAG size of output: 471 [2021-07-13 22:55:07,796 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 471 DAG size of output: 471 [2021-07-13 22:55:08,163 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 485 DAG size of output: 483 [2021-07-13 22:55:08,686 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 632 DAG size of output: 475 [2021-07-13 22:55:09,054 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 552 DAG size of output: 482 [2021-07-13 22:55:09,433 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 552 DAG size of output: 482 [2021-07-13 22:55:11,915 WARN L205 SmtUtils]: Spent 1.95 s on a formula simplification that was a NOOP. DAG size: 482 [2021-07-13 22:55:12,815 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 215 [2021-07-13 22:55:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 0 proven. 1382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 22:55:13,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147167791] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 22:55:13,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 22:55:13,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 59] total 86 [2021-07-13 22:55:13,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61113214] [2021-07-13 22:55:13,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-07-13 22:55:13,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 22:55:13,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-07-13 22:55:13,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=7039, Unknown=0, NotChecked=0, Total=7482 [2021-07-13 22:55:13,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:55:13,018 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-13 22:55:13,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.1954022988505746) internal successors, (191), 86 states have internal predecessors, (191), 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) [2021-07-13 22:55:13,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:55:13,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:55:13,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-13 22:55:13,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-13 22:55:13,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2021-07-13 22:55:13,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2021-07-13 22:55:13,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-07-13 22:55:13,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-13 22:55:16,311 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2021-07-13 22:55:16,793 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2021-07-13 22:55:17,265 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2021-07-13 22:55:17,789 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 22:55:18,328 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2021-07-13 22:55:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 22:55:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 22:55:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 22:55:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-13 22:55:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 22:55:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 22:55:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 22:55:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-07-13 22:55:24,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 22:55:24,531 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 22:55:24,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 22:55:24,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1527241309, now seen corresponding path program 9 times [2021-07-13 22:55:24,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 22:55:24,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362704217] [2021-07-13 22:55:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 22:55:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 22:56:02,544 WARN L205 SmtUtils]: Spent 35.91 s on a formula simplification. DAG size of input: 64 DAG size of output: 24 [2021-07-13 22:57:59,945 WARN L205 SmtUtils]: Spent 1.96 m on a formula simplification. DAG size of input: 76 DAG size of output: 30 [2021-07-13 23:02:36,691 WARN L205 SmtUtils]: Spent 4.61 m on a formula simplification. DAG size of input: 92 DAG size of output: 30 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown