/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-Persistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 04:21:39,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 04:21:39,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 04:21:39,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 04:21:39,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 04:21:39,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 04:21:39,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 04:21:39,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-Persistent-NoLbe.epf [2021-07-10 04:21:40,013 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 04:21:40,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 04:21:40,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 04:21:40,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 04:21:40,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 04:21:40,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 04:21:40,016 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 04:21:40,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 04:21:40,016 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 04:21:40,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 04:21:40,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 04:21:40,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 04:21:40,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 04:21:40,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 04:21:40,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 04:21:40,017 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 04:21:40,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 04:21:40,017 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 04:21:40,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 04:21:40,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 04:21:40,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 04:21:40,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 04:21:40,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 04:21:40,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 04:21:40,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 04:21:40,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 04:21:40,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 04:21:40,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 04:21:40,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 04:21:40,019 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 04:21:40,019 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 04:21:40,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 04:21:40,019 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-07-10 04:21:40,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 04:21:40,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 04:21:40,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 04:21:40,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 04:21:40,277 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 04:21:40,278 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 04:21:40,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl [2021-07-10 04:21:40,279 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl' [2021-07-10 04:21:40,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 04:21:40,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 04:21:40,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 04:21:40,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 04:21:40,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 04:21:40,308 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 10.07 04:21:40" (1/1) ... [2021-07-10 04:21:40,314 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 10.07 04:21:40" (1/1) ... [2021-07-10 04:21:40,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 04:21:40,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 04:21:40,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 04:21:40,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 04:21:40,330 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 10.07 04:21:40" (1/1) ... [2021-07-10 04:21:40,331 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 10.07 04:21:40" (1/1) ... [2021-07-10 04:21:40,332 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 10.07 04:21:40" (1/1) ... [2021-07-10 04:21:40,332 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 10.07 04:21:40" (1/1) ... [2021-07-10 04:21:40,335 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 10.07 04:21:40" (1/1) ... [2021-07-10 04:21:40,337 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 10.07 04:21:40" (1/1) ... [2021-07-10 04:21:40,338 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 10.07 04:21:40" (1/1) ... [2021-07-10 04:21:40,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 04:21:40,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 04:21:40,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 04:21:40,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 04:21:40,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 04:21:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 04:21:40,390 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 04:21:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 04:21:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 04:21:40,391 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 04:21:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 04:21:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 04:21:40,391 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 04:21:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 04:21:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 04:21:40,393 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 04:21:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 04:21:40,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 04:21:40,394 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 04:21:40,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 04:21:40,622 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 04:21:40,623 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 04:21:40 BoogieIcfgContainer [2021-07-10 04:21:40,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 04:21:40,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 04:21:40,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 04:21:40,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 04:21:40,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 04:21:40" (1/2) ... [2021-07-10 04:21:40,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14531631 and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 04:21:40, skipping insertion in model container [2021-07-10 04:21:40,639 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 10.07 04:21:40" (2/2) ... [2021-07-10 04:21:40,640 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl [2021-07-10 04:21:40,644 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 04:21:40,644 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 04:21:40,644 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 04:21:40,644 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 04:21:40,696 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 04:21:40,712 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-10 04:21:40,772 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 04:21:40,772 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 04:21:40,772 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 04:21:40,772 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 04:21:40,772 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 04:21:40,772 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 04:21:40,772 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 04:21:40,772 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 04:21:40,969 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 04:21:40,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 04:21:40,973 INFO L82 PathProgramCache]: Analyzing trace with hash -173970191, now seen corresponding path program 1 times [2021-07-10 04:21:40,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 04:21:40,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838224107] [2021-07-10 04:21:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 04:21:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 04:21:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 04:21:41,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 04:21:41,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838224107] [2021-07-10 04:21:41,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838224107] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 04:21:41,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 04:21:41,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-10 04:21:41,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033019603] [2021-07-10 04:21:41,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-10 04:21:41,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 04:21:41,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-10 04:21:41,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-10 04:21:41,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:41,089 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 04:21:41,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 04:21:41,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:41,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 04:21:41,143 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 04:21:41,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 04:21:41,145 INFO L82 PathProgramCache]: Analyzing trace with hash -256226487, now seen corresponding path program 2 times [2021-07-10 04:21:41,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 04:21:41,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980321824] [2021-07-10 04:21:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 04:21:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 04:21:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 04:21:41,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 04:21:41,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980321824] [2021-07-10 04:21:41,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980321824] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 04:21:41,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 04:21:41,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-10 04:21:41,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781383955] [2021-07-10 04:21:41,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 04:21:41,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 04:21:41,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 04:21:41,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-10 04:21:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:41,184 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 04:21:41,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 04:21:41,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:41,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:41,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:41,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-10 04:21:41,216 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 04:21:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 04:21:41,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2107613593, now seen corresponding path program 3 times [2021-07-10 04:21:41,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 04:21:41,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325667040] [2021-07-10 04:21:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 04:21:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 04:21:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 04:21:41,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 04:21:41,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325667040] [2021-07-10 04:21:41,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325667040] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 04:21:41,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183153652] [2021-07-10 04:21:41,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 04:21:41,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-10 04:21:41,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 04:21:41,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-10 04:21:41,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 04:21:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 04:21:41,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183153652] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 04:21:41,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 04:21:41,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-07-10 04:21:41,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431910501] [2021-07-10 04:21:41,597 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 04:21:41,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 04:21:41,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 04:21:41,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-07-10 04:21:41,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:41,598 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 04:21:41,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 04:21:41,598 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:41,598 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:41,598 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:21:41,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 04:21:41,965 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 04:21:41,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 04:21:41,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1278428005, now seen corresponding path program 4 times [2021-07-10 04:21:41,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 04:21:41,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470540722] [2021-07-10 04:21:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 04:21:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 04:21:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-10 04:21:42,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 04:21:42,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470540722] [2021-07-10 04:21:42,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470540722] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 04:21:42,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353842365] [2021-07-10 04:21:42,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 04:21:42,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 04:21:42,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 04:21:42,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-10 04:21:42,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 04:21:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-10 04:21:42,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353842365] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 04:21:42,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 04:21:42,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-07-10 04:21:42,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657919929] [2021-07-10 04:21:42,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-10 04:21:42,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 04:21:42,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-10 04:21:42,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-07-10 04:21:42,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:42,396 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 04:21:42,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 04:21:42,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:42,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:42,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:21:42,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:21:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 04:21:42,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 04:21:42,753 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 04:21:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 04:21:42,754 INFO L82 PathProgramCache]: Analyzing trace with hash 139900759, now seen corresponding path program 5 times [2021-07-10 04:21:42,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 04:21:42,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588478676] [2021-07-10 04:21:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 04:21:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 04:21:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 43 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 04:21:42,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 04:21:42,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588478676] [2021-07-10 04:21:42,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588478676] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 04:21:42,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825990956] [2021-07-10 04:21:42,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 04:21:42,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-07-10 04:21:42,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 04:21:42,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-10 04:21:42,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 04:21:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 04:21:43,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825990956] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 04:21:43,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 04:21:43,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 19 [2021-07-10 04:21:43,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387575323] [2021-07-10 04:21:43,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-10 04:21:43,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 04:21:43,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-10 04:21:43,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-07-10 04:21:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:43,318 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 04:21:43,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 04:21:43,318 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:43,318 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:43,318 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:21:43,318 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 04:21:43,318 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:43,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:43,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:43,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:21:43,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 04:21:43,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-10 04:21:43,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 04:21:43,985 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 04:21:43,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 04:21:43,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1126269443, now seen corresponding path program 6 times [2021-07-10 04:21:43,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 04:21:43,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557799982] [2021-07-10 04:21:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 04:21:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 04:21:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-07-10 04:21:44,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 04:21:44,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557799982] [2021-07-10 04:21:44,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557799982] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 04:21:44,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 04:21:44,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-10 04:21:44,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575450852] [2021-07-10 04:21:44,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 04:21:44,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 04:21:44,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 04:21:44,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-10 04:21:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:44,027 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 04:21:44,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 04:21:44,027 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:44,027 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:44,027 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:21:44,027 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 04:21:44,027 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-10 04:21:44,027 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:21:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 04:21:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-10 04:21:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:44,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-10 04:21:44,046 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 04:21:44,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 04:21:44,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1762998683, now seen corresponding path program 7 times [2021-07-10 04:21:44,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 04:21:44,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205462660] [2021-07-10 04:21:44,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 04:21:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 04:21:44,943 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2021-07-10 04:21:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 2 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 04:21:45,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 04:21:45,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205462660] [2021-07-10 04:21:45,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205462660] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 04:21:45,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139977249] [2021-07-10 04:21:45,313 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 04:21:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 04:21:45,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 28 conjunts are in the unsatisfiable core [2021-07-10 04:21:45,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 04:21:46,496 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2021-07-10 04:21:46,873 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-07-10 04:21:47,579 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-07-10 04:21:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 04:21:47,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139977249] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 04:21:47,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 04:21:47,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 40 [2021-07-10 04:21:47,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667376067] [2021-07-10 04:21:47,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-07-10 04:21:47,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 04:21:47,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-07-10 04:21:47,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1470, Unknown=0, NotChecked=0, Total=1640 [2021-07-10 04:21:47,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:47,666 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 04:21:47,666 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 40 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 04:21:47,666 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:47,666 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:47,666 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:21:47,666 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 04:21:47,666 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-10 04:21:47,666 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:47,666 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:21:48,270 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2021-07-10 04:21:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:21:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:21:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 04:21:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-10 04:21:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:21:48,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-10 04:21:48,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-07-10 04:21:48,667 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 04:21:48,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 04:21:48,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2136452505, now seen corresponding path program 8 times [2021-07-10 04:21:48,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 04:21:48,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284632629] [2021-07-10 04:21:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 04:21:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 04:21:49,690 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 45 [2021-07-10 04:21:49,911 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 44 [2021-07-10 04:21:50,205 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 42 [2021-07-10 04:21:50,513 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 38 [2021-07-10 04:21:51,646 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 126 DAG size of output: 49 [2021-07-10 04:21:53,411 WARN L205 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 127 DAG size of output: 57 [2021-07-10 04:21:54,010 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 36 [2021-07-10 04:21:54,527 WARN L205 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 63 [2021-07-10 04:21:55,858 WARN L205 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 168 DAG size of output: 55 [2021-07-10 04:21:59,483 WARN L205 SmtUtils]: Spent 3.55 s on a formula simplification. DAG size of input: 131 DAG size of output: 125 [2021-07-10 04:21:59,707 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 27 [2021-07-10 04:22:01,362 WARN L205 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 134 DAG size of output: 149 [2021-07-10 04:22:03,945 WARN L205 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 124 DAG size of output: 158 [2021-07-10 04:22:06,038 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 127 DAG size of output: 109 [2021-07-10 04:22:06,213 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 25 [2021-07-10 04:22:08,753 WARN L205 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 130 DAG size of output: 100 [2021-07-10 04:22:08,940 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 15 [2021-07-10 04:22:11,492 WARN L205 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 130 DAG size of output: 100 [2021-07-10 04:22:11,665 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 17 [2021-07-10 04:22:16,116 WARN L205 SmtUtils]: Spent 4.45 s on a formula simplification. DAG size of input: 140 DAG size of output: 76 [2021-07-10 04:22:22,076 WARN L205 SmtUtils]: Spent 5.93 s on a formula simplification. DAG size of input: 139 DAG size of output: 77 [2021-07-10 04:22:26,619 WARN L205 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 141 DAG size of output: 79 [2021-07-10 04:22:27,296 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-07-10 04:22:28,093 WARN L205 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2021-07-10 04:22:28,913 WARN L205 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2021-07-10 04:22:29,340 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2021-07-10 04:22:29,641 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 47 [2021-07-10 04:22:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 4 proven. 277 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-10 04:22:29,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 04:22:29,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284632629] [2021-07-10 04:22:29,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284632629] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 04:22:29,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371413352] [2021-07-10 04:22:29,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 04:22:29,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 04:22:29,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 04:22:29,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 47 conjunts are in the unsatisfiable core [2021-07-10 04:22:29,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 04:22:31,433 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2021-07-10 04:22:31,768 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2021-07-10 04:22:32,021 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-07-10 04:22:32,264 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-07-10 04:22:32,801 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 119 [2021-07-10 04:22:33,737 WARN L205 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 133 [2021-07-10 04:22:34,774 WARN L205 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 146 [2021-07-10 04:22:35,200 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-07-10 04:22:36,038 WARN L205 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 156 [2021-07-10 04:22:36,476 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-07-10 04:22:36,948 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-07-10 04:22:37,562 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2021-07-10 04:22:39,230 WARN L205 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 251 DAG size of output: 157 [2021-07-10 04:22:39,715 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-07-10 04:22:40,156 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-07-10 04:22:40,979 WARN L205 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 150 [2021-07-10 04:22:41,612 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-07-10 04:22:42,125 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-07-10 04:22:43,056 WARN L205 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 149 [2021-07-10 04:22:43,821 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 125 [2021-07-10 04:22:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 04:22:44,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371413352] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 04:22:44,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 04:22:44,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 37] total 64 [2021-07-10 04:22:44,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972627657] [2021-07-10 04:22:44,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-07-10 04:22:44,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 04:22:44,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-07-10 04:22:44,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=3823, Unknown=0, NotChecked=0, Total=4160 [2021-07-10 04:22:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:22:44,031 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 04:22:44,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.1846153846153844) internal successors, (142), 64 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 04:22:44,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:22:44,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:22:44,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:22:44,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 04:22:44,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-10 04:22:44,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:22:44,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-07-10 04:22:44,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:22:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:22:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:22:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:22:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 04:22:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-10 04:22:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:22:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-10 04:22:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-10 04:22:46,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-07-10 04:22:46,084 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 04:22:46,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 04:22:46,085 INFO L82 PathProgramCache]: Analyzing trace with hash -655788203, now seen corresponding path program 9 times [2021-07-10 04:22:46,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 04:22:46,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637350254] [2021-07-10 04:22:46,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 04:22:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 04:22:47,291 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 79 [2021-07-10 04:22:47,527 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 80 [2021-07-10 04:22:48,551 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 96 [2021-07-10 04:22:48,820 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 80 [2021-07-10 04:22:49,086 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 27 [2021-07-10 04:22:49,315 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 30 [2021-07-10 04:22:49,529 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 30 [2021-07-10 04:22:49,771 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 34 [2021-07-10 04:22:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 4 proven. 372 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-07-10 04:22:50,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 04:22:50,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637350254] [2021-07-10 04:22:50,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637350254] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 04:22:50,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460008160] [2021-07-10 04:22:50,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 04:22:50,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-07-10 04:22:50,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 04:22:50,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 52 conjunts are in the unsatisfiable core [2021-07-10 04:22:50,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 04:22:52,337 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-07-10 04:22:52,539 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-07-10 04:22:52,895 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 88 [2021-07-10 04:22:53,107 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-07-10 04:22:53,452 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-07-10 04:22:53,709 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-07-10 04:22:54,165 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 116 [2021-07-10 04:22:54,811 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 136 [2021-07-10 04:22:55,223 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-07-10 04:22:55,602 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-07-10 04:22:56,089 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-07-10 04:22:56,511 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-07-10 04:22:56,945 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-07-10 04:22:57,533 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2021-07-10 04:22:58,719 WARN L205 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 182 [2021-07-10 04:22:59,980 WARN L205 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 197 [2021-07-10 04:23:01,236 WARN L205 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 190 [2021-07-10 04:23:01,984 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2021-07-10 04:23:03,141 WARN L205 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 180 [2021-07-10 04:23:04,305 WARN L205 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 177 [2021-07-10 04:23:06,193 WARN L205 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2021-07-10 04:23:07,220 WARN L205 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2021-07-10 04:23:08,202 WARN L205 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-07-10 04:23:10,206 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 287 DAG size of output: 226 [2021-07-10 04:23:11,501 WARN L205 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 157 [2021-07-10 04:23:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 04:23:11,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460008160] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 04:23:11,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 04:23:11,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 42] total 70 [2021-07-10 04:23:11,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476124421] [2021-07-10 04:23:11,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-07-10 04:23:11,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 04:23:11,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-07-10 04:23:11,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=4642, Unknown=0, NotChecked=0, Total=4970 [2021-07-10 04:23:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:23:11,900 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 04:23:11,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 70 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 04:23:11,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:23:11,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:23:11,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:23:11,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 04:23:11,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-10 04:23:11,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:23:11,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-07-10 04:23:11,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-07-10 04:23:11,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 04:23:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 04:23:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:23:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-10 04:23:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 04:23:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 04:23:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 04:23:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-10 04:23:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-10 04:23:17,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-10 04:23:17,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 04:23:17,364 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 04:23:17,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 04:23:17,365 INFO L82 PathProgramCache]: Analyzing trace with hash 367561825, now seen corresponding path program 10 times [2021-07-10 04:23:17,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 04:23:17,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074024215] [2021-07-10 04:23:17,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 04:23:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 04:23:20,042 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2021-07-10 04:23:20,199 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2021-07-10 04:23:20,385 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2021-07-10 04:23:20,547 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2021-07-10 04:23:26,838 WARN L205 SmtUtils]: Spent 6.22 s on a formula simplification. DAG size of input: 91 DAG size of output: 52 [2021-07-10 04:35:12,182 WARN L205 SmtUtils]: Spent 11.75 m on a formula simplification. DAG size of input: 207 DAG size of output: 88 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown