/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-NewStatesSleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 02:38:52,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 02:38:52,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 02:38:52,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 02:38:52,489 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-NewStatesSleep-NoLbe.epf [2021-07-10 02:38:52,518 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 02:38:52,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 02:38:52,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 02:38:52,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 02:38:52,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 02:38:52,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 02:38:52,521 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 02:38:52,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 02:38:52,521 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 02:38:52,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 02:38:52,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 02:38:52,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 02:38:52,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 02:38:52,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 02:38:52,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 02:38:52,522 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 02:38:52,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 02:38:52,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 02:38:52,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 02:38:52,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 02:38:52,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 02:38:52,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 02:38:52,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 02:38:52,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 02:38:52,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 02:38:52,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 02:38:52,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 02:38:52,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 02:38:52,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 02:38:52,524 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 02:38:52,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 02:38:52,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 02:38:52,524 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-10 02:38:52,524 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 02:38:52,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 02:38:52,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 02:38:52,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 02:38:52,789 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 02:38:52,790 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 02:38:52,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun-alt.wvr.bpl [2021-07-10 02:38:52,791 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun-alt.wvr.bpl' [2021-07-10 02:38:52,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 02:38:52,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 02:38:52,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 02:38:52,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 02:38:52,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 02:38:52,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:38:52" (1/1) ... [2021-07-10 02:38:52,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:38:52" (1/1) ... [2021-07-10 02:38:52,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 02:38:52,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 02:38:52,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 02:38:52,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 02:38:52,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:38:52" (1/1) ... [2021-07-10 02:38:52,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:38:52" (1/1) ... [2021-07-10 02:38:52,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:38:52" (1/1) ... [2021-07-10 02:38:52,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:38:52" (1/1) ... [2021-07-10 02:38:52,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:38:52" (1/1) ... [2021-07-10 02:38:52,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:38:52" (1/1) ... [2021-07-10 02:38:52,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:38:52" (1/1) ... [2021-07-10 02:38:52,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 02:38:52,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 02:38:52,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 02:38:52,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 02:38:52,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:38:52" (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 02:38:52,899 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 02:38:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 02:38:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 02:38:52,900 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 02:38:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 02:38:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 02:38:52,900 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 02:38:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 02:38:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 02:38:52,900 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 02:38:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 02:38:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 02:38:52,901 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 02:38:53,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 02:38:53,081 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 02:38:53,082 INFO L202 PluginConnector]: Adding new model sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:38:53 BoogieIcfgContainer [2021-07-10 02:38:53,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 02:38:53,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 02:38:53,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 02:38:53,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 02:38:53,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:38:52" (1/2) ... [2021-07-10 02:38:53,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309cc583 and model type sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 02:38:53, skipping insertion in model container [2021-07-10 02:38:53,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:38:53" (2/2) ... [2021-07-10 02:38:53,087 INFO L111 eAbstractionObserver]: Analyzing ICFG sum-fun-alt.wvr.bpl [2021-07-10 02:38:53,091 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 02:38:53,091 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 02:38:53,091 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 02:38:53,091 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 02:38:53,148 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 02:38:53,165 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 02:38:53,214 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 02:38:53,214 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 02:38:53,214 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 02:38:53,214 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 02:38:53,214 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 02:38:53,215 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 02:38:53,215 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 02:38:53,215 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 02:38:53,321 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 02:38:53,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 02:38:53,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2048413527, now seen corresponding path program 1 times [2021-07-10 02:38:53,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 02:38:53,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189464399] [2021-07-10 02:38:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 02:38:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 02:38:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 02:38:53,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 02:38:53,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189464399] [2021-07-10 02:38:53,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189464399] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 02:38:53,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 02:38:53,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-10 02:38:53,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438686272] [2021-07-10 02:38:53,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-10 02:38:53,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 02:38:53,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-10 02:38:53,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-10 02:38:53,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:53,468 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 02:38:53,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 02:38:53,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:53,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:53,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 02:38:53,491 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 02:38:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 02:38:53,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1251079929, now seen corresponding path program 1 times [2021-07-10 02:38:53,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 02:38:53,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119457078] [2021-07-10 02:38:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 02:38:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 02:38:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 02:38:53,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 02:38:53,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119457078] [2021-07-10 02:38:53,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119457078] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 02:38:53,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 02:38:53,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-10 02:38:53,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476155852] [2021-07-10 02:38:53,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 02:38:53,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 02:38:53,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 02:38:53,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-10 02:38:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:53,527 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 02:38:53,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 02:38:53,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:53,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:53,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-10 02:38:53,560 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 02:38:53,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 02:38:53,561 INFO L82 PathProgramCache]: Analyzing trace with hash 740151525, now seen corresponding path program 1 times [2021-07-10 02:38:53,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 02:38:53,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278566126] [2021-07-10 02:38:53,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 02:38:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 02:38:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 02:38:53,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 02:38:53,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278566126] [2021-07-10 02:38:53,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278566126] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:53,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855968480] [2021-07-10 02:38:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 02:38:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 02:38:53,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-10 02:38:53,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 02:38:54,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 02:38:54,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-10 02:38:54,092 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 02:38:54,096 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 02:38:54,100 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 02:38:54,100 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:3 [2021-07-10 02:38:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 02:38:54,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855968480] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:54,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 02:38:54,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 02:38:54,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98398346] [2021-07-10 02:38:54,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 02:38:54,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 02:38:54,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 02:38:54,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-07-10 02:38:54,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:54,133 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 02:38:54,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 02:38:54,133 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:54,133 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:54,133 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:54,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:38:54,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 02:38:54,489 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 02:38:54,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 02:38:54,489 INFO L82 PathProgramCache]: Analyzing trace with hash 98880067, now seen corresponding path program 2 times [2021-07-10 02:38:54,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 02:38:54,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786936434] [2021-07-10 02:38:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 02:38:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 02:38:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 02:38:54,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 02:38:54,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786936434] [2021-07-10 02:38:54,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786936434] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:54,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883118692] [2021-07-10 02:38:54,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 02:38:54,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 02:38:54,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 02:38:54,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 02:38:54,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 02:38:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 02:38:54,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883118692] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:54,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 02:38:54,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-10 02:38:54,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992426640] [2021-07-10 02:38:54,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 02:38:54,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 02:38:54,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 02:38:54,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-07-10 02:38:54,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:54,661 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 02:38:54,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 02:38:54,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:54,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:54,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:38:54,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:38:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 02:38:55,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 02:38:55,025 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 02:38:55,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 02:38:55,026 INFO L82 PathProgramCache]: Analyzing trace with hash -832533121, now seen corresponding path program 1 times [2021-07-10 02:38:55,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 02:38:55,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677100202] [2021-07-10 02:38:55,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 02:38:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 02:38:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 02:38:55,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 02:38:55,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677100202] [2021-07-10 02:38:55,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677100202] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:55,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969722010] [2021-07-10 02:38:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 02:38:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 02:38:55,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 02:38:55,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 02:38:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 02:38:55,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969722010] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:55,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 02:38:55,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 02:38:55,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242387061] [2021-07-10 02:38:55,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 02:38:55,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 02:38:55,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 02:38:55,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-10 02:38:55,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:55,237 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 02:38:55,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 02:38:55,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:55,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:55,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:38:55,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-10 02:38:55,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:38:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 02:38:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 02:38:55,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 02:38:55,554 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 02:38:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 02:38:55,555 INFO L82 PathProgramCache]: Analyzing trace with hash 399673437, now seen corresponding path program 2 times [2021-07-10 02:38:55,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 02:38:55,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191700588] [2021-07-10 02:38:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 02:38:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 02:38:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 02:38:55,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 02:38:55,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191700588] [2021-07-10 02:38:55,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191700588] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:55,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270907958] [2021-07-10 02:38:55,940 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 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 02:38:55,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 02:38:55,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 02:38:55,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-07-10 02:38:55,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 02:38:56,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:38:56,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:38:56,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 02:38:56,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-07-10 02:38:56,249 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 02:38:56,253 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 02:38:56,254 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 02:38:56,254 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:3 [2021-07-10 02:38:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 02:38:56,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270907958] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:56,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 02:38:56,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-07-10 02:38:56,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198309536] [2021-07-10 02:38:56,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-10 02:38:56,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 02:38:56,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-10 02:38:56,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-07-10 02:38:56,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:56,277 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 02:38:56,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 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 02:38:56,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:56,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:56,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:38:56,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-10 02:38:56,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 02:38:56,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:38:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 02:38:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 02:38:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-10 02:38:57,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-10 02:38:57,304 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 02:38:57,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 02:38:57,304 INFO L82 PathProgramCache]: Analyzing trace with hash -860798021, now seen corresponding path program 3 times [2021-07-10 02:38:57,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 02:38:57,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119071336] [2021-07-10 02:38:57,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 02:38:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 02:38:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 02:38:57,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 02:38:57,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119071336] [2021-07-10 02:38:57,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119071336] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:57,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841547783] [2021-07-10 02:38:57,401 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 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 02:38:57,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-10 02:38:57,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 02:38:57,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 02:38:57,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 02:38:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 02:38:57,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841547783] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:57,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 02:38:57,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-07-10 02:38:57,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555285744] [2021-07-10 02:38:57,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-10 02:38:57,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 02:38:57,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-10 02:38:57,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-07-10 02:38:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:57,612 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 02:38:57,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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 02:38:57,612 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:57,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:57,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:38:57,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-10 02:38:57,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 02:38:57,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-10 02:38:57,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:38:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 02:38:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 02:38:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-10 02:38:58,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 02:38:58,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 02:38:58,345 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 02:38:58,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 02:38:58,345 INFO L82 PathProgramCache]: Analyzing trace with hash -18642185, now seen corresponding path program 4 times [2021-07-10 02:38:58,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 02:38:58,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585990775] [2021-07-10 02:38:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 02:38:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 02:38:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 02:38:58,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 02:38:58,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585990775] [2021-07-10 02:38:58,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585990775] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:58,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316166007] [2021-07-10 02:38:58,417 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 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 02:38:58,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 02:38:58,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 02:38:58,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 02:38:58,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 02:38:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 02:38:58,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316166007] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:58,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 02:38:58,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-07-10 02:38:58,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598469933] [2021-07-10 02:38:58,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-10 02:38:58,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 02:38:58,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-10 02:38:58,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-07-10 02:38:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:58,576 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 02:38:58,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 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 02:38:58,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:58,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:58,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:38:58,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-10 02:38:58,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 02:38:58,577 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-10 02:38:58,577 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 02:38:58,577 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:38:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:38:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:38:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:38:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 02:38:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 02:38:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-10 02:38:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 02:38:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 02:38:58,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 02:38:58,964 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 02:38:58,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 02:38:58,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1357658155, now seen corresponding path program 5 times [2021-07-10 02:38:58,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 02:38:58,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057250062] [2021-07-10 02:38:58,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 02:38:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 02:38:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 02:38:59,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 02:38:59,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057250062] [2021-07-10 02:38:59,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057250062] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:38:59,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348183169] [2021-07-10 02:38:59,457 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 02:38:59,498 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-10 02:38:59,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 02:38:59,500 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-07-10 02:38:59,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 02:39:00,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 02:39:00,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:00,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:00,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:00,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:00,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-07-10 02:39:00,130 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 02:39:00,135 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 02:39:00,136 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 02:39:00,137 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:48, output treesize:3 [2021-07-10 02:39:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 02:39:00,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348183169] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:39:00,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 02:39:00,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2021-07-10 02:39:00,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158364622] [2021-07-10 02:39:00,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-07-10 02:39:00,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 02:39:00,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-07-10 02:39:00,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2021-07-10 02:39:00,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:39:00,162 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 02:39:00,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 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 02:39:00,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:39:00,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:39:00,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:39:00,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-10 02:39:00,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 02:39:00,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-10 02:39:00,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 02:39:00,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-10 02:39:00,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 02:39:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 02:39:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 02:39:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 02:39:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 02:39:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 02:39:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-10 02:39:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 02:39:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 02:39:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-10 02:39:02,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-07-10 02:39:02,049 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 02:39:02,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 02:39:02,049 INFO L82 PathProgramCache]: Analyzing trace with hash -986074607, now seen corresponding path program 6 times [2021-07-10 02:39:02,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 02:39:02,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173944883] [2021-07-10 02:39:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 02:39:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 02:39:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 02:39:02,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 02:39:02,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173944883] [2021-07-10 02:39:02,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173944883] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 02:39:02,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020663176] [2021-07-10 02:39:02,710 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 02:39:02,743 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-10 02:39:02,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 02:39:02,744 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 58 conjunts are in the unsatisfiable core [2021-07-10 02:39:02,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 02:39:03,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:03,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:03,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:03,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:03,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:03,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:03,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:03,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:03,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 02:39:03,909 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-07-10 02:39:03,910 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 02:39:03,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 24 case distinctions, treesize of input 49 treesize of output 243 [2021-07-10 02:39:04,375 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 807 DAG size of output: 589 [2021-07-10 02:39:04,658 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 819 DAG size of output: 599 [2021-07-10 02:39:05,195 WARN L205 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 553 DAG size of output: 629 [2021-07-10 02:39:05,436 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 547 DAG size of output: 547 [2021-07-10 02:39:05,590 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 491 DAG size of output: 491 [2021-07-10 02:39:05,694 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 437 DAG size of output: 437 [2021-07-10 02:39:06,846 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 826 DAG size of output: 694 [2021-07-10 02:39:07,125 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 1062 DAG size of output: 867 [2021-07-10 02:39:07,723 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 1267 DAG size of output: 1013 [2021-07-10 02:39:08,476 WARN L205 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 1468 DAG size of output: 1162 [2021-07-10 02:39:09,536 WARN L205 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 1652 DAG size of output: 1304 [2021-07-10 02:39:10,656 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 1921 DAG size of output: 1533 [2021-07-10 02:39:11,738 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 1921 DAG size of output: 1533 [2021-07-10 02:39:12,885 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 1927 DAG size of output: 1539 [2021-07-10 02:39:15,374 WARN L205 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 1428 DAG size of output: 1780 [2021-07-10 02:39:15,580 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 377 [2021-07-10 02:39:15,769 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 377 [2021-07-10 02:39:16,585 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 858 DAG size of output: 826 [2021-07-10 02:39:17,031 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 623 DAG size of output: 595 [2021-07-10 02:39:17,315 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 1181 DAG size of output: 1131 [2021-07-10 02:39:17,744 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 1336 DAG size of output: 1277 [2021-07-10 02:39:18,458 WARN L205 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 1529 DAG size of output: 1465 [2021-07-10 02:39:19,220 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 603 DAG size of output: 580 [2021-07-10 02:39:19,416 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 749 DAG size of output: 709 [2021-07-10 02:39:21,878 WARN L205 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 471 DAG size of output: 580 [2021-07-10 02:39:22,080 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 465 DAG size of output: 465 [2021-07-10 02:39:22,530 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 415 DAG size of output: 469 [2021-07-10 02:39:24,093 WARN L205 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 1714 DAG size of output: 1500 [2021-07-10 02:39:24,825 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 706 DAG size of output: 683 [2021-07-10 02:39:25,019 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 716 DAG size of output: 693 [2021-07-10 02:39:26,126 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 2114 DAG size of output: 1876 [2021-07-10 02:39:27,665 WARN L205 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 2378 DAG size of output: 2090 [2021-07-10 02:39:33,630 WARN L205 SmtUtils]: Spent 5.95 s on a formula simplification. DAG size of input: 6712 DAG size of output: 6019 [2021-07-10 02:39:39,674 WARN L205 SmtUtils]: Spent 6.01 s on a formula simplification. DAG size of input: 6712 DAG size of output: 6019 [2021-07-10 02:39:46,739 WARN L205 SmtUtils]: Spent 7.02 s on a formula simplification. DAG size of input: 6715 DAG size of output: 6022 [2021-07-10 02:40:01,242 WARN L205 SmtUtils]: Spent 14.46 s on a formula simplification. DAG size of input: 5797 DAG size of output: 7117 [2021-07-10 02:40:02,078 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 621 DAG size of output: 522 [2021-07-10 02:40:02,685 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 761 DAG size of output: 698 [2021-07-10 02:40:02,845 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 290 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown