/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-Sleep-NoLbe-New_States.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 17:57:58,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 17:57:58,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 17:57:58,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-12 17:57:58,716 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-Sleep-NoLbe-New_States.epf [2021-03-12 17:57:58,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 17:57:58,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 17:57:58,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-12 17:57:58,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-12 17:57:58,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 17:57:58,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 17:57:58,753 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 17:57:58,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 17:57:58,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 17:57:58,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 17:57:58,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 17:57:58,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 17:57:58,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 17:57:58,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 17:57:58,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 17:57:58,754 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 17:57:58,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 17:57:58,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 17:57:58,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 17:57:58,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 17:57:58,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 17:57:58,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 17:57:58,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 17:57:58,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 17:57:58,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 17:57:58,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 17:57:58,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 17:57:58,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 17:57:58,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 17:57:58,756 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-12 17:57:58,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-03-12 17:57:58,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-12 17:57:58,757 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-03-12 17:57:58,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 17:57:59,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 17:57:59,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 17:57:59,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 17:57:59,078 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 17:57:59,079 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 17:57:59,080 INFO L432 ainManager$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 [2021-03-12 17:57:59,081 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl' [2021-03-12 17:57:59,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 17:57:59,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 17:57:59,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 17:57:59,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 17:57:59,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 17:57:59,134 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 12.03 05:57:59" (1/1) ... [2021-03-12 17:57:59,141 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 12.03 05:57:59" (1/1) ... [2021-03-12 17:57:59,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 17:57:59,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 17:57:59,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 17:57:59,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 17:57:59,159 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 12.03 05:57:59" (1/1) ... [2021-03-12 17:57:59,159 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 12.03 05:57:59" (1/1) ... [2021-03-12 17:57:59,160 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 12.03 05:57:59" (1/1) ... [2021-03-12 17:57:59,160 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 12.03 05:57:59" (1/1) ... [2021-03-12 17:57:59,162 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 12.03 05:57:59" (1/1) ... [2021-03-12 17:57:59,165 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 12.03 05:57:59" (1/1) ... [2021-03-12 17:57:59,166 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 12.03 05:57:59" (1/1) ... [2021-03-12 17:57:59,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 17:57:59,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 17:57:59,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 17:57:59,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 17:57:59,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 05:57:59" (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 [2021-03-12 17:57:59,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 17:57:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 17:57:59,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 17:57:59,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 17:57:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 17:57:59,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 17:57:59,228 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 17:57:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 17:57:59,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 17:57:59,228 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-12 17:57:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-12 17:57:59,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-12 17:57:59,229 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 17:57:59,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 17:57:59,439 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 17:57:59,441 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 05:57:59 BoogieIcfgContainer [2021-03-12 17:57:59,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 17:57:59,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 17:57:59,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 17:57:59,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 17:57:59,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 05:57:59" (1/2) ... [2021-03-12 17:57:59,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88a2651 and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 05:57:59, skipping insertion in model container [2021-03-12 17:57:59,447 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 12.03 05:57:59" (2/2) ... [2021-03-12 17:57:59,448 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl [2021-03-12 17:57:59,453 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-12 17:57:59,453 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 17:57:59,456 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 17:57:59,456 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 17:57:59,489 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-12 17:57:59,504 INFO L253 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 [2021-03-12 17:57:59,551 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 17:57:59,551 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-12 17:57:59,551 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 17:57:59,551 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 17:57:59,551 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 17:57:59,552 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 17:57:59,552 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 17:57:59,552 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 17:57:59,706 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:57:59,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:57:59,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1056072297, now seen corresponding path program 1 times [2021-03-12 17:57:59,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:57:59,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718475414] [2021-03-12 17:57:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:57:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:57:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-12 17:57:59,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718475414] [2021-03-12 17:57:59,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 17:57:59,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 17:57:59,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687510108] [2021-03-12 17:57:59,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-12 17:57:59,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:57:59,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-12 17:57:59,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-12 17:57:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:57:59,977 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:57:59,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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) [2021-03-12 17:57:59,984 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:00,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:00,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 17:58:00,111 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:58:00,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:58:00,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1518795247, now seen corresponding path program 2 times [2021-03-12 17:58:00,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:58:00,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98506834] [2021-03-12 17:58:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:58:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:58:00,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98506834] [2021-03-12 17:58:00,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482663160] [2021-03-12 17:58:00,202 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 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 [2021-03-12 17:58:00,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-12 17:58:00,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:58:00,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2021-03-12 17:58:00,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:58:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:58:00,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:58:00,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 10 [2021-03-12 17:58:00,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964828112] [2021-03-12 17:58:00,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 17:58:00,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:58:00,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 17:58:00,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-12 17:58:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:00,534 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:58:00,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 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) [2021-03-12 17:58:00,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:00,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:00,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:00,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:00,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:58:00,857 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:58:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:58:00,858 INFO L82 PathProgramCache]: Analyzing trace with hash 256478609, now seen corresponding path program 3 times [2021-03-12 17:58:00,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:58:00,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005170618] [2021-03-12 17:58:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:58:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-12 17:58:00,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005170618] [2021-03-12 17:58:00,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420449136] [2021-03-12 17:58:00,919 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 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 [2021-03-12 17:58:00,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-12 17:58:00,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:58:00,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-12 17:58:00,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:58:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-12 17:58:01,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:58:01,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-12 17:58:01,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678306268] [2021-03-12 17:58:01,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 17:58:01,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:58:01,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 17:58:01,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-12 17:58:01,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:01,026 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:58:01,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) [2021-03-12 17:58:01,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:01,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:01,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:01,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:01,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:01,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:58:01,391 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:58:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:58:01,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1881810703, now seen corresponding path program 4 times [2021-03-12 17:58:01,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:58:01,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172769304] [2021-03-12 17:58:01,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:58:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-03-12 17:58:01,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172769304] [2021-03-12 17:58:01,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 17:58:01,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 17:58:01,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107584142] [2021-03-12 17:58:01,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 17:58:01,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:58:01,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 17:58:01,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 17:58:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:01,422 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:58:01,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-03-12 17:58:01,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:01,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:01,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:01,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:01,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:01,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:01,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:01,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:01,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-12 17:58:01,452 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:58:01,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:58:01,452 INFO L82 PathProgramCache]: Analyzing trace with hash 691881653, now seen corresponding path program 5 times [2021-03-12 17:58:01,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:58:01,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718488006] [2021-03-12 17:58:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:58:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-12 17:58:01,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718488006] [2021-03-12 17:58:01,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728608285] [2021-03-12 17:58:01,555 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 [2021-03-12 17:58:01,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-12 17:58:01,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:58:01,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-12 17:58:01,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:58:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-12 17:58:01,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:58:01,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-03-12 17:58:01,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919918728] [2021-03-12 17:58:01,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 17:58:01,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:58:01,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 17:58:01,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-12 17:58:01,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:01,687 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:58:01,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 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) [2021-03-12 17:58:01,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:01,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:01,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:01,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:01,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:01,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:02,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:58:02,068 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:58:02,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:58:02,068 INFO L82 PathProgramCache]: Analyzing trace with hash 486004813, now seen corresponding path program 6 times [2021-03-12 17:58:02,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:58:02,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383962306] [2021-03-12 17:58:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:58:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:58:02,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383962306] [2021-03-12 17:58:02,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965365584] [2021-03-12 17:58:02,488 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 [2021-03-12 17:58:02,541 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-03-12 17:58:02,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:58:02,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-12 17:58:02,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:58:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:58:03,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:58:03,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-03-12 17:58:03,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657042988] [2021-03-12 17:58:03,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-12 17:58:03,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:58:03,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-12 17:58:03,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2021-03-12 17:58:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:03,468 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:58:03,469 INFO L481 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) [2021-03-12 17:58:03,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:03,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:03,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:03,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:03,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:03,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:03,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:58:03,880 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:58:03,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:58:03,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1472166929, now seen corresponding path program 7 times [2021-03-12 17:58:03,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:58:03,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183610191] [2021-03-12 17:58:03,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:58:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 17:58:04,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183610191] [2021-03-12 17:58:04,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058737803] [2021-03-12 17:58:04,535 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) [2021-03-12 17:58:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:58:04,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-12 17:58:04,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:58:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:58:05,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:58:05,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2021-03-12 17:58:05,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977670215] [2021-03-12 17:58:05,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-12 17:58:05,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:58:05,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-12 17:58:05,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2021-03-12 17:58:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:05,925 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:58:05,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 35 states have internal predecessors, (77), 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) [2021-03-12 17:58:05,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:05,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:05,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:05,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:05,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:05,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:05,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:06,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:58:06,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:58:06,556 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:58:06,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:58:06,557 INFO L82 PathProgramCache]: Analyzing trace with hash 629939601, now seen corresponding path program 8 times [2021-03-12 17:58:06,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:58:06,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199244274] [2021-03-12 17:58:06,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:58:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-03-12 17:58:07,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199244274] [2021-03-12 17:58:07,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122317597] [2021-03-12 17:58:07,226 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 [2021-03-12 17:58:07,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-12 17:58:07,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:58:07,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-12 17:58:07,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:58:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:58:08,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:58:08,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 37 [2021-03-12 17:58:08,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311025072] [2021-03-12 17:58:08,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-12 17:58:08,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:58:08,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-12 17:58:08,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2021-03-12 17:58:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:08,897 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:58:08,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 17:58:08,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:08,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:08,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:08,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:08,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:08,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:08,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:58:08,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:58:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-12 17:58:09,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:58:09,659 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:58:09,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:58:09,660 INFO L82 PathProgramCache]: Analyzing trace with hash 909239347, now seen corresponding path program 9 times [2021-03-12 17:58:09,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:58:09,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943062008] [2021-03-12 17:58:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:58:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 1 proven. 81 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-03-12 17:58:10,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943062008] [2021-03-12 17:58:10,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859993723] [2021-03-12 17:58:10,733 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 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 [2021-03-12 17:58:10,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-03-12 17:58:10,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:58:10,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-12 17:58:10,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:58:11,870 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2021-03-12 17:58:12,272 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2021-03-12 17:58:12,566 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-03-12 17:58:13,121 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 103 [2021-03-12 17:58:13,565 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 86 [2021-03-12 17:58:14,006 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 108 [2021-03-12 17:58:14,243 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-03-12 17:58:14,607 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-03-12 17:58:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:58:14,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:58:14,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 40 [2021-03-12 17:58:14,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027297536] [2021-03-12 17:58:14,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-12 17:58:14,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:58:14,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-12 17:58:14,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1395, Unknown=0, NotChecked=0, Total=1640 [2021-03-12 17:58:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:14,733 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:58:14,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 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) [2021-03-12 17:58:14,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:14,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:14,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:14,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:14,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:14,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:14,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:58:14,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-03-12 17:58:14,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:58:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-12 17:58:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 17:58:15,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-03-12 17:58:15,959 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:58:15,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:58:15,960 INFO L82 PathProgramCache]: Analyzing trace with hash -773372775, now seen corresponding path program 10 times [2021-03-12 17:58:15,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:58:15,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559174630] [2021-03-12 17:58:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:58:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:17,160 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 21 [2021-03-12 17:58:17,321 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 28 [2021-03-12 17:58:17,506 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 30 [2021-03-12 17:58:17,746 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 35 [2021-03-12 17:58:17,926 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 34 [2021-03-12 17:58:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 1 proven. 120 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-03-12 17:58:18,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559174630] [2021-03-12 17:58:18,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407119823] [2021-03-12 17:58:18,127 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 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 [2021-03-12 17:58:18,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-12 17:58:18,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:58:18,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-12 17:58:18,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:58:19,402 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-12 17:58:19,598 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-03-12 17:58:20,166 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 122 [2021-03-12 17:58:20,535 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-03-12 17:58:21,092 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 121 [2021-03-12 17:58:21,651 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 123 [2021-03-12 17:58:22,356 WARN L205 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 145 [2021-03-12 17:58:23,139 WARN L205 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 140 [2021-03-12 17:58:23,536 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-03-12 17:58:24,056 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2021-03-12 17:58:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:58:24,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:58:24,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27] total 44 [2021-03-12 17:58:24,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171492157] [2021-03-12 17:58:24,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-03-12 17:58:24,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:58:24,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-03-12 17:58:24,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1725, Unknown=0, NotChecked=0, Total=1980 [2021-03-12 17:58:24,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:24,189 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:58:24,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 44 states have internal predecessors, (98), 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) [2021-03-12 17:58:24,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:24,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:24,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:24,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:24,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:24,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:24,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:58:24,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-03-12 17:58:24,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 17:58:24,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:58:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-12 17:58:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-12 17:58:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 17:58:25,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:58:25,654 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:58:25,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:58:25,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1826259875, now seen corresponding path program 11 times [2021-03-12 17:58:25,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:58:25,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674964522] [2021-03-12 17:58:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:58:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:26,616 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2021-03-12 17:58:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 2 proven. 152 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-03-12 17:58:27,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674964522] [2021-03-12 17:58:27,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674634558] [2021-03-12 17:58:27,295 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 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 [2021-03-12 17:58:27,342 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-03-12 17:58:27,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:58:27,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-12 17:58:27,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:58:28,757 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2021-03-12 17:58:29,305 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 128 [2021-03-12 17:58:30,161 WARN L205 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 154 [2021-03-12 17:58:30,639 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-03-12 17:58:31,360 WARN L205 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 144 [2021-03-12 17:58:32,255 WARN L205 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 142 [2021-03-12 17:58:33,337 WARN L205 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 130 [2021-03-12 17:58:33,752 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2021-03-12 17:58:34,505 WARN L205 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 148 [2021-03-12 17:58:35,723 WARN L205 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 180 [2021-03-12 17:58:36,313 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2021-03-12 17:58:36,836 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-03-12 17:58:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:58:37,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:58:37,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 29] total 46 [2021-03-12 17:58:37,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340226625] [2021-03-12 17:58:37,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-03-12 17:58:37,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:58:37,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-03-12 17:58:37,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1976, Unknown=0, NotChecked=0, Total=2162 [2021-03-12 17:58:37,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:37,089 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:58:37,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 46 states have internal predecessors, (102), 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) [2021-03-12 17:58:37,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:37,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:37,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:37,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:37,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:37,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:37,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:58:37,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-03-12 17:58:37,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-03-12 17:58:37,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 17:58:37,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:58:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-12 17:58:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-12 17:58:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 17:58:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 17:58:39,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:58:39,504 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:58:39,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:58:39,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1039854207, now seen corresponding path program 12 times [2021-03-12 17:58:39,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:58:39,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784975649] [2021-03-12 17:58:39,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:58:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:41,895 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 26 [2021-03-12 17:58:42,194 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 30 [2021-03-12 17:58:42,504 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 28 [2021-03-12 17:58:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 3 proven. 256 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-12 17:58:43,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784975649] [2021-03-12 17:58:43,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939112782] [2021-03-12 17:58:43,051 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:58:43,108 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-03-12 17:58:43,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 17:58:43,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-12 17:58:43,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:58:44,492 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2021-03-12 17:58:44,909 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-03-12 17:58:45,182 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-03-12 17:58:45,916 WARN L205 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 149 [2021-03-12 17:58:46,328 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-03-12 17:58:47,056 WARN L205 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 148 [2021-03-12 17:58:47,814 WARN L205 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2021-03-12 17:58:48,869 WARN L205 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 144 [2021-03-12 17:58:49,354 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-03-12 17:58:50,468 WARN L205 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 191 [2021-03-12 17:58:51,048 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2021-03-12 17:58:51,882 WARN L205 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-03-12 17:58:52,570 WARN L205 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-03-12 17:58:53,734 WARN L205 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 159 [2021-03-12 17:58:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:58:54,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:58:54,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 32] total 58 [2021-03-12 17:58:54,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963441551] [2021-03-12 17:58:54,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-03-12 17:58:54,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:58:54,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-03-12 17:58:54,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=3104, Unknown=0, NotChecked=0, Total=3422 [2021-03-12 17:58:54,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:54,110 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:58:54,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 58 states have internal predecessors, (125), 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) [2021-03-12 17:58:54,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:54,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:54,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:54,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:54,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:54,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:54,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:58:54,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-03-12 17:58:54,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-03-12 17:58:54,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 17:58:54,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 17:58:54,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:58:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:58:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:58:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:58:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:58:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:58:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:58:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:58:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-12 17:58:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-12 17:58:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 17:58:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 17:58:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 17:58:55,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2021-03-12 17:58:55,908 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:58:55,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:58:55,908 INFO L82 PathProgramCache]: Analyzing trace with hash 607295246, now seen corresponding path program 13 times [2021-03-12 17:58:55,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:58:55,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458662502] [2021-03-12 17:58:55,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:58:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:57,103 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 28 [2021-03-12 17:58:57,502 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 30 [2021-03-12 17:58:57,772 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 31 [2021-03-12 17:58:57,967 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 28 [2021-03-12 17:58:58,175 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 20 [2021-03-12 17:58:58,412 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 26 [2021-03-12 17:58:58,606 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 30 [2021-03-12 17:58:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 4 proven. 285 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-03-12 17:58:59,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458662502] [2021-03-12 17:58:59,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080828209] [2021-03-12 17:58:59,336 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 17:58:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:58:59,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 46 conjunts are in the unsatisfiable core [2021-03-12 17:58:59,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 17:59:00,738 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-03-12 17:59:01,341 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 130 [2021-03-12 17:59:02,055 WARN L205 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 153 [2021-03-12 17:59:03,557 WARN L205 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 217 DAG size of output: 183 [2021-03-12 17:59:04,485 WARN L205 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2021-03-12 17:59:05,491 WARN L205 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 168 [2021-03-12 17:59:06,616 WARN L205 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 152 [2021-03-12 17:59:07,044 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-03-12 17:59:07,857 WARN L205 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 168 [2021-03-12 17:59:08,441 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2021-03-12 17:59:09,026 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2021-03-12 17:59:09,795 WARN L205 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-03-12 17:59:10,623 WARN L205 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2021-03-12 17:59:11,875 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 219 DAG size of output: 218 [2021-03-12 17:59:12,875 WARN L205 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2021-03-12 17:59:14,357 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 330 DAG size of output: 211 [2021-03-12 17:59:15,180 WARN L205 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-03-12 17:59:16,544 WARN L205 SmtUtils]: Spent 870.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-12 17:59:17,923 WARN L205 SmtUtils]: Spent 991.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-12 17:59:19,315 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 171 DAG size of output: 171 [2021-03-12 17:59:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 17:59:19,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 17:59:19,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 39] total 61 [2021-03-12 17:59:19,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394161381] [2021-03-12 17:59:19,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-03-12 17:59:19,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 17:59:19,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-03-12 17:59:19,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=3431, Unknown=0, NotChecked=0, Total=3782 [2021-03-12 17:59:19,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:59:19,683 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 17:59:19,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 2.1129032258064515) internal successors, (131), 61 states have internal predecessors, (131), 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) [2021-03-12 17:59:19,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:59:19,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:59:19,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:59:19,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:59:19,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:59:19,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:59:19,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:59:19,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-03-12 17:59:19,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-03-12 17:59:19,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 17:59:19,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 17:59:19,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 17:59:19,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 17:59:21,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 17:59:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 17:59:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 17:59:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 17:59:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 17:59:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 17:59:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-12 17:59:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-12 17:59:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-12 17:59:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 17:59:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 17:59:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 17:59:21,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-12 17:59:22,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable299 [2021-03-12 17:59:22,161 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 17:59:22,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 17:59:22,162 INFO L82 PathProgramCache]: Analyzing trace with hash -125493046, now seen corresponding path program 14 times [2021-03-12 17:59:22,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 17:59:22,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662244608] [2021-03-12 17:59:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 17:59:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 17:59:25,895 WARN L205 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 109 DAG size of output: 35 [2021-03-12 17:59:28,396 WARN L205 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 99 DAG size of output: 31 [2021-03-12 17:59:28,675 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 48 [2021-03-12 17:59:30,125 WARN L205 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 111 DAG size of output: 46 [2021-03-12 17:59:32,254 WARN L205 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2021-03-12 17:59:34,340 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 127 DAG size of output: 75 [2021-03-12 17:59:34,486 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 17 [2021-03-12 17:59:36,476 WARN L205 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 125 DAG size of output: 62 [2021-03-12 17:59:38,035 WARN L205 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 128 DAG size of output: 72 [2021-03-12 17:59:47,641 WARN L205 SmtUtils]: Spent 9.58 s on a formula simplification. DAG size of input: 227 DAG size of output: 407 [2021-03-12 17:59:47,825 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 407 DAG size of output: 417 [2021-03-12 17:59:48,794 WARN L205 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 405 DAG size of output: 27 [2021-03-12 18:00:02,997 WARN L205 SmtUtils]: Spent 14.20 s on a formula simplification. DAG size of input: 230 DAG size of output: 339 [2021-03-12 18:00:03,222 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 278 [2021-03-12 18:00:13,771 WARN L205 SmtUtils]: Spent 10.44 s on a formula simplification. DAG size of input: 263 DAG size of output: 449 [2021-03-12 18:00:26,182 WARN L205 SmtUtils]: Spent 12.22 s on a formula simplification. DAG size of input: 266 DAG size of output: 434 [2021-03-12 18:00:27,173 WARN L205 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 434 DAG size of output: 28 [2021-03-12 18:00:34,595 WARN L205 SmtUtils]: Spent 7.42 s on a formula simplification. DAG size of input: 255 DAG size of output: 270 [2021-03-12 18:00:35,214 WARN L205 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 30 [2021-03-12 18:00:46,325 WARN L205 SmtUtils]: Spent 11.11 s on a formula simplification. DAG size of input: 255 DAG size of output: 306 [2021-03-12 18:00:47,115 WARN L205 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 28 [2021-03-12 18:00:53,545 WARN L205 SmtUtils]: Spent 6.43 s on a formula simplification. DAG size of input: 184 DAG size of output: 141 [2021-03-12 18:00:53,855 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 17 [2021-03-12 18:00:58,182 WARN L205 SmtUtils]: Spent 4.33 s on a formula simplification. DAG size of input: 149 DAG size of output: 133 [2021-03-12 18:00:59,000 WARN L205 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2021-03-12 18:00:59,129 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 27 [2021-03-12 18:01:00,172 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-03-12 18:01:00,904 WARN L205 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 63 [2021-03-12 18:01:01,045 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 19 [2021-03-12 18:01:01,789 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 4 proven. 339 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-03-12 18:01:01,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662244608] [2021-03-12 18:01:01,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395207453] [2021-03-12 18:01:01,789 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 18:01:01,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-12 18:01:01,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 18:01:01,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 48 conjunts are in the unsatisfiable core [2021-03-12 18:01:01,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 18:01:03,316 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2021-03-12 18:01:03,725 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-03-12 18:01:04,006 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-03-12 18:01:04,704 WARN L205 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 142 [2021-03-12 18:01:05,116 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2021-03-12 18:01:05,750 WARN L205 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 138 [2021-03-12 18:01:06,095 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-03-12 18:01:06,506 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-03-12 18:01:06,955 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-03-12 18:01:08,168 WARN L205 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 198 [2021-03-12 18:01:09,406 WARN L205 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 198 [2021-03-12 18:01:10,191 WARN L205 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-03-12 18:01:11,811 WARN L205 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 273 DAG size of output: 238 [2021-03-12 18:01:12,734 WARN L205 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2021-03-12 18:01:13,652 WARN L205 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2021-03-12 18:01:14,555 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2021-03-12 18:01:16,349 WARN L205 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 290 DAG size of output: 250 [2021-03-12 18:01:18,058 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 311 DAG size of output: 236 [2021-03-12 18:01:20,008 WARN L205 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 261 DAG size of output: 260 [2021-03-12 18:01:21,125 WARN L205 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2021-03-12 18:01:22,407 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 177 DAG size of output: 176 [2021-03-12 18:01:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 18:01:22,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 18:01:22,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 40] total 62 [2021-03-12 18:01:22,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348511393] [2021-03-12 18:01:22,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-03-12 18:01:22,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 18:01:22,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-03-12 18:01:22,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=3560, Unknown=0, NotChecked=0, Total=3906 [2021-03-12 18:01:22,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 18:01:22,715 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 18:01:22,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 62 states have internal predecessors, (135), 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) [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-03-12 18:01:22,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 18:01:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 18:01:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 18:01:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 18:01:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 18:01:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 18:01:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 18:01:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-12 18:01:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-12 18:01:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-12 18:01:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 18:01:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 18:01:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 18:01:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-12 18:01:26,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-12 18:01:26,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable377 [2021-03-12 18:01:26,417 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 18:01:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 18:01:26,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1227894454, now seen corresponding path program 15 times [2021-03-12 18:01:26,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 18:01:26,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320955230] [2021-03-12 18:01:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 18:01:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 18:01:27,667 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2021-03-12 18:01:28,187 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2021-03-12 18:01:28,573 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-03-12 18:01:28,794 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 77 [2021-03-12 18:01:29,119 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 67 [2021-03-12 18:01:29,476 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 77 [2021-03-12 18:01:29,965 WARN L205 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 82 [2021-03-12 18:01:30,447 WARN L205 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 69 [2021-03-12 18:01:30,624 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 19 [2021-03-12 18:01:30,979 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 69 [2021-03-12 18:01:31,114 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 17 [2021-03-12 18:01:31,711 WARN L205 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 78 [2021-03-12 18:01:32,436 WARN L205 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 102 [2021-03-12 18:01:32,637 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 23 [2021-03-12 18:01:33,459 WARN L205 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 109 [2021-03-12 18:01:33,993 WARN L205 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 104 [2021-03-12 18:01:34,442 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 112 [2021-03-12 18:01:34,726 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 24 [2021-03-12 18:01:35,171 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 112 [2021-03-12 18:01:35,513 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 25 [2021-03-12 18:01:36,032 WARN L205 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 109 [2021-03-12 18:01:36,267 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 22 [2021-03-12 18:01:36,757 WARN L205 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 113 [2021-03-12 18:01:36,989 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 19 [2021-03-12 18:01:37,163 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 73 [2021-03-12 18:01:37,638 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 113 [2021-03-12 18:01:37,962 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2021-03-12 18:01:38,307 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 87 [2021-03-12 18:01:38,500 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 17 [2021-03-12 18:01:38,709 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-03-12 18:01:38,874 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 26 [2021-03-12 18:01:39,061 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 88 [2021-03-12 18:01:39,243 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 28 [2021-03-12 18:01:39,474 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2021-03-12 18:01:39,699 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 30 [2021-03-12 18:01:40,000 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 77 [2021-03-12 18:01:40,153 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 28 [2021-03-12 18:01:40,302 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2021-03-12 18:01:40,470 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 28 [2021-03-12 18:01:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 5 proven. 395 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-03-12 18:01:40,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320955230] [2021-03-12 18:01:40,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403037735] [2021-03-12 18:01:40,765 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 18:01:40,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-03-12 18:01:40,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 18:01:40,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 51 conjunts are in the unsatisfiable core [2021-03-12 18:01:40,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 18:01:42,719 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2021-03-12 18:01:43,198 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-03-12 18:01:43,543 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-03-12 18:01:44,419 WARN L205 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 169 [2021-03-12 18:01:44,922 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2021-03-12 18:01:45,797 WARN L205 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 168 [2021-03-12 18:01:46,633 WARN L205 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 159 [2021-03-12 18:01:47,496 WARN L205 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 155 [2021-03-12 18:01:48,045 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2021-03-12 18:01:49,312 WARN L205 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 193 [2021-03-12 18:01:50,002 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2021-03-12 18:01:50,781 WARN L205 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-03-12 18:01:51,726 WARN L205 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2021-03-12 18:01:52,667 WARN L205 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2021-03-12 18:01:53,630 WARN L205 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2021-03-12 18:01:54,554 WARN L205 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2021-03-12 18:01:56,150 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 303 DAG size of output: 230 [2021-03-12 18:01:57,020 WARN L205 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2021-03-12 18:01:58,061 WARN L205 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2021-03-12 18:01:59,227 WARN L205 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2021-03-12 18:02:00,238 WARN L205 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2021-03-12 18:02:02,129 WARN L205 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 209 DAG size of output: 208 [2021-03-12 18:02:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 18:02:02,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 18:02:02,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 42] total 64 [2021-03-12 18:02:02,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865888238] [2021-03-12 18:02:02,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-03-12 18:02:02,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 18:02:02,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-03-12 18:02:02,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=3816, Unknown=0, NotChecked=0, Total=4160 [2021-03-12 18:02:02,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 18:02:02,656 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 18:02:02,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.1384615384615384) internal successors, (139), 64 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) [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-03-12 18:02:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 18:02:07,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-12 18:02:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-12 18:02:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-12 18:02:07,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 18:02:07,910 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 18:02:07,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 18:02:07,910 INFO L82 PathProgramCache]: Analyzing trace with hash 71372520, now seen corresponding path program 16 times [2021-03-12 18:02:07,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 18:02:07,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475106694] [2021-03-12 18:02:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 18:02:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 18:03:17,254 WARN L205 SmtUtils]: Spent 1.13 m on a formula simplification. DAG size of input: 112 DAG size of output: 56 [2021-03-12 18:04:41,163 WARN L205 SmtUtils]: Spent 1.40 m on a formula simplification. DAG size of input: 142 DAG size of output: 60 [2021-03-12 18:08:23,482 WARN L205 SmtUtils]: Spent 3.70 m on a formula simplification. DAG size of input: 164 DAG size of output: 56 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown