/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-fun.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 23:08:35,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 23:08:35,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 23:08:35,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 23:08:35,267 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-DelaySleep-NoLbe-Random521.epf [2021-06-06 23:08:35,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 23:08:35,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 23:08:35,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 23:08:35,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 23:08:35,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 23:08:35,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 23:08:35,303 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 23:08:35,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 23:08:35,304 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 23:08:35,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 23:08:35,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 23:08:35,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 23:08:35,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 23:08:35,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 23:08:35,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 23:08:35,306 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 23:08:35,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 23:08:35,306 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 23:08:35,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 23:08:35,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 23:08:35,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 23:08:35,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 23:08:35,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 23:08:35,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 23:08:35,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 23:08:35,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 23:08:35,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 23:08:35,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 23:08:35,307 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-06 23:08:35,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 23:08:35,308 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 23:08:35,308 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 23:08:35,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 23:08:35,308 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 23:08:35,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-06 23:08:35,309 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 23:08:35,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 23:08:35,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 23:08:35,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 23:08:35,630 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 23:08:35,633 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 23:08:35,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-fun.wvr.bpl [2021-06-06 23:08:35,634 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-fun.wvr.bpl' [2021-06-06 23:08:35,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 23:08:35,671 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 23:08:35,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 23:08:35,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 23:08:35,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 23:08:35,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:08:35" (1/1) ... [2021-06-06 23:08:35,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:08:35" (1/1) ... [2021-06-06 23:08:35,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 23:08:35,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 23:08:35,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 23:08:35,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 23:08:35,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:08:35" (1/1) ... [2021-06-06 23:08:35,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:08:35" (1/1) ... [2021-06-06 23:08:35,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:08:35" (1/1) ... [2021-06-06 23:08:35,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:08:35" (1/1) ... [2021-06-06 23:08:35,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:08:35" (1/1) ... [2021-06-06 23:08:35,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:08:35" (1/1) ... [2021-06-06 23:08:35,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:08:35" (1/1) ... [2021-06-06 23:08:35,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 23:08:35,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 23:08:35,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 23:08:35,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 23:08:35,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:08:35" (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 [2021-06-06 23:08:35,812 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 23:08:35,813 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 23:08:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 23:08:35,813 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 23:08:35,813 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 23:08:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 23:08:35,814 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 23:08:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 23:08:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 23:08:35,815 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 23:08:35,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 23:08:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 23:08:35,816 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 23:08:36,034 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 23:08:36,035 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 23:08:36,036 INFO L202 PluginConnector]: Adding new model min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 11:08:36 BoogieIcfgContainer [2021-06-06 23:08:36,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 23:08:36,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 23:08:36,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 23:08:36,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 23:08:36,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 11:08:35" (1/2) ... [2021-06-06 23:08:36,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53600616 and model type min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 11:08:36, skipping insertion in model container [2021-06-06 23:08:36,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 11:08:36" (2/2) ... [2021-06-06 23:08:36,042 INFO L111 eAbstractionObserver]: Analyzing ICFG min-fun.wvr.bpl [2021-06-06 23:08:36,046 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 23:08:36,047 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 23:08:36,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 23:08:36,047 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 23:08:36,079 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-06 23:08:36,126 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 [2021-06-06 23:08:36,162 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 23:08:36,162 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 23:08:36,162 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 23:08:36,162 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 23:08:36,163 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 23:08:36,163 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 23:08:36,163 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 23:08:36,163 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 23:08:36,195 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:08:36,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:08:36,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1550547830, now seen corresponding path program 1 times [2021-06-06 23:08:36,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:08:36,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116249247] [2021-06-06 23:08:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:08:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:08:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:08:36,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:08:36,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116249247] [2021-06-06 23:08:36,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116249247] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 23:08:36,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 23:08:36,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 23:08:36,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292487280] [2021-06-06 23:08:36,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-06 23:08:36,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:08:36,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-06 23:08:36,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-06 23:08:36,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:08:36,383 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:08:36,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) 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) [2021-06-06 23:08:36,385 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:08:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:08:36,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 23:08:36,479 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:08:36,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:08:36,480 INFO L82 PathProgramCache]: Analyzing trace with hash -769335896, now seen corresponding path program 1 times [2021-06-06 23:08:36,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:08:36,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858889771] [2021-06-06 23:08:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:08:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:08:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:08:36,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:08:36,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858889771] [2021-06-06 23:08:36,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858889771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 23:08:36,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 23:08:36,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 23:08:36,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48691486] [2021-06-06 23:08:36,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 23:08:36,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:08:36,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 23:08:36,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-06 23:08:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:08:36,559 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:08:36,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-06-06 23:08:36,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:08:36,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:08:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:08:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:08:36,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 23:08:36,622 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:08:36,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:08:36,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1369203574, now seen corresponding path program 1 times [2021-06-06 23:08:36,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:08:36,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417841654] [2021-06-06 23:08:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:08:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:08:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:08:36,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:08:36,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417841654] [2021-06-06 23:08:36,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417841654] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:08:36,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783783269] [2021-06-06 23:08:36,695 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 [2021-06-06 23:08:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:08:36,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-06 23:08:36,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:08:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:08:36,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783783269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:08:36,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:08:36,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-06 23:08:36,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409725718] [2021-06-06 23:08:36,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 23:08:36,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:08:36,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 23:08:36,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-06 23:08:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:08:36,855 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:08:36,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2021-06-06 23:08:36,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:08:36,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:08:36,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:08:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:08:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:08:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:08:37,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:08:37,160 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:08:37,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:08:37,161 INFO L82 PathProgramCache]: Analyzing trace with hash -54118744, now seen corresponding path program 2 times [2021-06-06 23:08:37,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:08:37,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123044376] [2021-06-06 23:08:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:08:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:08:37,572 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-06-06 23:08:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:08:38,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:08:38,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123044376] [2021-06-06 23:08:38,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123044376] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:08:38,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172997577] [2021-06-06 23:08:38,082 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 [2021-06-06 23:08:38,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 23:08:38,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:08:38,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 23:08:38,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:08:38,918 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 23:08:38,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 23:08:38,922 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:38,956 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 23:08:38,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 23:08:38,961 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:38,983 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:38,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 23:08:39,003 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,025 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:39,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-06 23:08:39,032 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,059 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 23:08:39,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-06 23:08:39,068 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,080 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 23:08:39,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 23:08:39,082 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,095 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 23:08:39,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 23:08:39,096 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,116 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 23:08:39,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 23:08:39,118 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,132 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 23:08:39,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 23:08:39,133 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,146 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 23:08:39,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 23:08:39,149 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,170 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:39,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-06 23:08:39,174 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,194 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 23:08:39,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 22 [2021-06-06 23:08:39,197 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,209 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 23:08:39,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 23:08:39,211 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,234 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 23:08:39,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 23:08:39,243 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,255 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 23:08:39,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 23:08:39,256 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,273 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 23:08:39,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 23:08:39,276 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:39,425 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-06-06 23:08:39,426 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:39,463 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 23:08:39,464 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:737, output treesize:407 [2021-06-06 23:08:39,869 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-06-06 23:08:40,107 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-06-06 23:08:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:08:40,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172997577] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:08:40,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:08:40,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 23:08:40,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796064104] [2021-06-06 23:08:40,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 23:08:40,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:08:40,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 23:08:40,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-06 23:08:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:08:40,261 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:08:40,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 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) [2021-06-06 23:08:40,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:08:40,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:08:40,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:08:40,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:08:40,748 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2021-06-06 23:08:40,884 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2021-06-06 23:08:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:08:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:08:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:08:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:08:41,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:08:41,263 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:08:41,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:08:41,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1022017862, now seen corresponding path program 3 times [2021-06-06 23:08:41,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:08:41,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76057409] [2021-06-06 23:08:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:08:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:08:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:08:41,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:08:41,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76057409] [2021-06-06 23:08:41,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76057409] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:08:41,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138164389] [2021-06-06 23:08:41,349 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 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 [2021-06-06 23:08:41,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 23:08:41,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:08:41,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 23:08:41,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:08:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:08:41,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138164389] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:08:41,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:08:41,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 23:08:41,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535293704] [2021-06-06 23:08:41,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 23:08:41,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:08:41,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 23:08:41,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 23:08:41,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:08:41,523 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:08:41,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 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) [2021-06-06 23:08:41,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:08:41,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:08:41,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:08:41,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:08:41,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:08:41,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:08:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:08:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:08:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:08:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:08:42,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:08:42,157 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:08:42,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:08:42,157 INFO L82 PathProgramCache]: Analyzing trace with hash -908038518, now seen corresponding path program 4 times [2021-06-06 23:08:42,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:08:42,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239632809] [2021-06-06 23:08:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:08:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:08:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:08:42,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:08:42,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239632809] [2021-06-06 23:08:42,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239632809] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:08:42,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364540622] [2021-06-06 23:08:42,251 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 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 [2021-06-06 23:08:42,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 23:08:42,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:08:42,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 23:08:42,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:08:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:08:42,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364540622] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:08:42,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:08:42,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 23:08:42,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949712091] [2021-06-06 23:08:42,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 23:08:42,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:08:42,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 23:08:42,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-06 23:08:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:08:42,420 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:08:42,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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) [2021-06-06 23:08:42,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:08:42,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:08:42,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:08:42,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:08:42,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:08:42,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:08:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:08:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:08:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:08:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:08:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:08:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:08:42,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-06-06 23:08:42,759 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:08:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:08:42,760 INFO L82 PathProgramCache]: Analyzing trace with hash 554568360, now seen corresponding path program 5 times [2021-06-06 23:08:42,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:08:42,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849058494] [2021-06-06 23:08:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:08:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:08:43,774 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 98 [2021-06-06 23:08:44,399 WARN L205 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 111 [2021-06-06 23:08:44,903 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 106 [2021-06-06 23:08:45,204 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-06 23:08:45,329 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2021-06-06 23:08:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:08:45,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:08:45,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849058494] [2021-06-06 23:08:45,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849058494] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:08:45,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309662585] [2021-06-06 23:08:45,504 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 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 [2021-06-06 23:08:45,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 23:08:45,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:08:45,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 43 conjunts are in the unsatisfiable core [2021-06-06 23:08:45,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:08:46,428 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 23:08:47,523 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2021-06-06 23:08:48,922 WARN L205 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 192 [2021-06-06 23:08:50,231 WARN L205 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 196 [2021-06-06 23:08:50,881 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2021-06-06 23:08:51,452 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2021-06-06 23:08:52,012 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2021-06-06 23:08:52,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:52,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:52,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:52,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:52,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:52,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2021-06-06 23:08:52,546 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:52,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:52,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:52,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:52,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:52,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-06-06 23:08:52,573 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:54,431 WARN L205 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 364 DAG size of output: 321 [2021-06-06 23:08:54,432 INFO L628 ElimStorePlain]: treesize reduction 575, result has 65.4 percent of original size [2021-06-06 23:08:54,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:54,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:54,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:54,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:54,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 23:08:54,458 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:55,130 WARN L205 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2021-06-06 23:08:55,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:55,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:55,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:55,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:55,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 23:08:55,163 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:55,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:55,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:55,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:55,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:55,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 23:08:55,183 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:55,830 WARN L205 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2021-06-06 23:08:55,830 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:55,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:55,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:55,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:55,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 23:08:55,857 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:55,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:55,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:55,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:55,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:55,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 23:08:55,885 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:56,465 WARN L205 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2021-06-06 23:08:56,466 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:56,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:56,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:56,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:56,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:56,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:56,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 23:08:56,499 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:56,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:56,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:56,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:56,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 23:08:56,536 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:57,037 WARN L205 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2021-06-06 23:08:57,038 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:57,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:57,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:57,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:57,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:57,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 23:08:57,079 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:57,582 WARN L205 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2021-06-06 23:08:57,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:57,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:57,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:57,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:57,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:57,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 23:08:57,598 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:58,071 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2021-06-06 23:08:58,071 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:58,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:58,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:58,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:58,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:58,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-06-06 23:08:58,091 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:58,541 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2021-06-06 23:08:58,541 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:58,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:58,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:58,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:58,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:58,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:58,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 23:08:58,581 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:58,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:58,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:58,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:58,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 23:08:58,600 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:59,006 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2021-06-06 23:08:59,006 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:59,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 23:08:59,029 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:59,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:59,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-06 23:08:59,046 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:59,433 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-06-06 23:08:59,434 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:59,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:59,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:59,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 23:08:59,455 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:59,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 23:08:59,470 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 23:08:59,797 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2021-06-06 23:08:59,798 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:08:59,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:08:59,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:08:59,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 23:08:59,811 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 23:09:00,118 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2021-06-06 23:09:00,118 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:09:00,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:09:00,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:09:00,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:09:00,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:09:00,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 23:09:00,132 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 23:09:00,426 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2021-06-06 23:09:00,427 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:09:00,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:09:00,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:09:00,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:09:00,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:09:00,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 23:09:00,441 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 23:09:00,728 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-06-06 23:09:00,728 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:09:00,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 23:09:00,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:09:00,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:09:00,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 23:09:00,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 23:09:00,746 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 23:09:01,020 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-06-06 23:09:01,021 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 23:09:01,021 INFO L518 ElimStorePlain]: Eliminatee v_prenex_88 vanished before elimination [2021-06-06 23:09:01,039 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-0 vars, 16 dim-1 vars, End of recursive call: and 15 xjuncts. [2021-06-06 23:09:01,039 INFO L247 ElimStorePlain]: Needed 23 recursive calls to eliminate 48 variables, input treesize:1721, output treesize:178 [2021-06-06 23:09:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:09:01,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309662585] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:09:01,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:09:01,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-06-06 23:09:01,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328105959] [2021-06-06 23:09:01,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-06 23:09:01,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:09:01,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-06 23:09:01,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2021-06-06 23:09:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:09:01,212 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:09:01,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 23:09:01,212 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:09:01,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:09:01,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:09:01,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:09:01,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:09:01,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:09:01,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:09:01,469 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 35 [2021-06-06 23:09:01,815 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 46 [2021-06-06 23:09:02,257 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 62 [2021-06-06 23:09:02,461 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 66 [2021-06-06 23:09:03,150 WARN L205 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 116 [2021-06-06 23:09:05,072 WARN L205 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 181 DAG size of output: 116 [2021-06-06 23:09:07,893 WARN L205 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 333 DAG size of output: 149 [2021-06-06 23:09:08,160 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2021-06-06 23:09:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:09:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:09:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:09:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:09:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:09:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:09:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:09:08,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:09:08,493 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:09:08,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:09:08,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1665472326, now seen corresponding path program 6 times [2021-06-06 23:09:08,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:09:08,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265078620] [2021-06-06 23:09:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:09:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:09:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:09:08,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:09:08,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265078620] [2021-06-06 23:09:08,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265078620] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:09:08,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199288299] [2021-06-06 23:09:08,600 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 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 [2021-06-06 23:09:08,649 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-06 23:09:08,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 23:09:08,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-06 23:09:08,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:09:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 23:09:08,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199288299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:09:08,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:09:08,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-06-06 23:09:08,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255184361] [2021-06-06 23:09:08,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-06 23:09:08,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:09:08,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-06 23:09:08,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2021-06-06 23:09:08,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:09:08,877 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:09:08,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 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) [2021-06-06 23:09:08,877 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:09:08,877 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:09:08,877 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:09:08,877 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:09:08,878 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:09:08,878 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:09:08,878 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:09:08,878 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:09:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:09:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:09:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:09:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:09:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:09:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:09:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:09:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:09:09,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:09:09,861 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:09:09,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:09:09,861 INFO L82 PathProgramCache]: Analyzing trace with hash -283130742, now seen corresponding path program 7 times [2021-06-06 23:09:09,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:09:09,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169664270] [2021-06-06 23:09:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:09:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:09:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:09:09,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 23:09:09,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169664270] [2021-06-06 23:09:09,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169664270] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:09:09,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321839204] [2021-06-06 23:09:09,960 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 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 [2021-06-06 23:09:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:09:09,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-06 23:09:09,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 23:09:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 23:09:10,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321839204] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 23:09:10,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 23:09:10,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2021-06-06 23:09:10,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051847896] [2021-06-06 23:09:10,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 23:09:10,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 23:09:10,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 23:09:10,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-06-06 23:09:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:09:10,129 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 23:09:10,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 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) [2021-06-06 23:09:10,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:09:10,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:09:10,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:09:10,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:09:10,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:09:10,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:09:10,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:09:10,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:09:10,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 23:09:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 23:09:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 23:09:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 23:09:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 23:09:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 23:09:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 23:09:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 23:09:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 23:09:10,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 23:09:10,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 23:09:10,506 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 23:09:10,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 23:09:10,507 INFO L82 PathProgramCache]: Analyzing trace with hash -587832664, now seen corresponding path program 8 times [2021-06-06 23:09:10,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 23:09:10,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730098813] [2021-06-06 23:09:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 23:09:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 23:09:13,181 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 106 [2021-06-06 23:09:13,510 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2021-06-06 23:12:49,054 WARN L205 SmtUtils]: Spent 3.59 m on a formula simplification. DAG size of input: 427 DAG size of output: 207 [2021-06-06 23:12:49,645 WARN L205 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 81 [2021-06-06 23:16:39,053 WARN L205 SmtUtils]: Spent 3.82 m on a formula simplification. DAG size of input: 530 DAG size of output: 310 [2021-06-06 23:16:40,206 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 310 DAG size of output: 120 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown