/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 04:26:41,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 04:26:41,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 04:26:41,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 04:26:41,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 04:26:41,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 04:26:41,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 04:26:41,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf [2021-07-14 04:26:41,396 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 04:26:41,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 04:26:41,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 04:26:41,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 04:26:41,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 04:26:41,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 04:26:41,400 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 04:26:41,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 04:26:41,400 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 04:26:41,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 04:26:41,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 04:26:41,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 04:26:41,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 04:26:41,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 04:26:41,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 04:26:41,402 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 04:26:41,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 04:26:41,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 04:26:41,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 04:26:41,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 04:26:41,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 04:26:41,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 04:26:41,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 04:26:41,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 04:26:41,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 04:26:41,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 04:26:41,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 04:26:41,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 04:26:41,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 04:26:41,404 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 04:26:41,404 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 04:26:41,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 04:26:41,405 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-14 04:26:41,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 04:26:41,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 04:26:41,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 04:26:41,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 04:26:41,730 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 04:26:41,730 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 04:26:41,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl [2021-07-14 04:26:41,731 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl' [2021-07-14 04:26:41,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 04:26:41,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 04:26:41,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 04:26:41,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 04:26:41,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 04:26:41,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:26:41" (1/1) ... [2021-07-14 04:26:41,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:26:41" (1/1) ... [2021-07-14 04:26:41,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 04:26:41,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 04:26:41,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 04:26:41,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 04:26:41,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:26:41" (1/1) ... [2021-07-14 04:26:41,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:26:41" (1/1) ... [2021-07-14 04:26:41,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:26:41" (1/1) ... [2021-07-14 04:26:41,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:26:41" (1/1) ... [2021-07-14 04:26:41,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:26:41" (1/1) ... [2021-07-14 04:26:41,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:26:41" (1/1) ... [2021-07-14 04:26:41,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:26:41" (1/1) ... [2021-07-14 04:26:41,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 04:26:41,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 04:26:41,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 04:26:41,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 04:26:41,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:26:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 04:26:41,861 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 04:26:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 04:26:41,861 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 04:26:41,861 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 04:26:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 04:26:41,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 04:26:41,862 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 04:26:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 04:26:41,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 04:26:41,863 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 04:26:41,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 04:26:41,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 04:26:41,864 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 04:26:42,094 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 04:26:42,094 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 04:26:42,096 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:26:42 BoogieIcfgContainer [2021-07-14 04:26:42,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 04:26:42,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 04:26:42,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 04:26:42,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 04:26:42,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:26:41" (1/2) ... [2021-07-14 04:26:42,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97a1a5a and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 04:26:42, skipping insertion in model container [2021-07-14 04:26:42,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:26:42" (2/2) ... [2021-07-14 04:26:42,114 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-07-14 04:26:42,119 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 04:26:42,119 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 04:26:42,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 04:26:42,120 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 04:26:42,204 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 04:26:42,230 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 04:26:42,290 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 04:26:42,290 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 04:26:42,290 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 04:26:42,290 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 04:26:42,290 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 04:26:42,290 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 04:26:42,291 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 04:26:42,291 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 04:26:42,412 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:26:42,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:26:42,418 INFO L82 PathProgramCache]: Analyzing trace with hash -574795467, now seen corresponding path program 1 times [2021-07-14 04:26:42,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:26:42,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929684510] [2021-07-14 04:26:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:26:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:26:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:26:42,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:26:42,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929684510] [2021-07-14 04:26:42,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929684510] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 04:26:42,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 04:26:42,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 04:26:42,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412866297] [2021-07-14 04:26:42,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 04:26:42,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:26:42,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 04:26:42,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 04:26:42,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:42,623 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:26:42,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:26:42,624 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:42,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 04:26:42,644 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:26:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:26:42,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1851604627, now seen corresponding path program 1 times [2021-07-14 04:26:42,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:26:42,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692748175] [2021-07-14 04:26:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:26:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:26:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 04:26:42,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:26:42,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692748175] [2021-07-14 04:26:42,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692748175] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 04:26:42,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 04:26:42,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 04:26:42,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636318436] [2021-07-14 04:26:42,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 04:26:42,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:26:42,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 04:26:42,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 04:26:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:42,688 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:26:42,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:26:42,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:42,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:42,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 04:26:42,728 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:26:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:26:42,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1712675697, now seen corresponding path program 1 times [2021-07-14 04:26:42,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:26:42,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213117657] [2021-07-14 04:26:42,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:26:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:26:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:26:43,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:26:43,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213117657] [2021-07-14 04:26:43,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213117657] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:43,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042688601] [2021-07-14 04:26:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:26:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:26:43,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-14 04:26:43,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:26:43,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:26:43,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-07-14 04:26:43,379 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-14 04:26:43,386 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:26:43,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:26:43,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-07-14 04:26:43,395 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-14 04:26:43,402 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:26:43,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-07-14 04:26:43,409 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 04:26:43,414 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:26:43,418 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-07-14 04:26:43,419 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2021-07-14 04:26:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:26:43,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042688601] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:43,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:26:43,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 04:26:43,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813633977] [2021-07-14 04:26:43,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 04:26:43,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:26:43,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 04:26:43,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-07-14 04:26:43,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:43,464 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:26:43,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:26:43,464 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:43,465 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:43,465 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:26:43,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:26:43,861 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:26:43,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:26:43,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1608291889, now seen corresponding path program 2 times [2021-07-14 04:26:43,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:26:43,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302205468] [2021-07-14 04:26:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:26:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:26:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:26:43,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:26:43,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302205468] [2021-07-14 04:26:43,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302205468] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:43,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574603370] [2021-07-14 04:26:43,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:26:43,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 04:26:43,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 04:26:43,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 04:26:43,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:26:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:26:44,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574603370] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:44,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:26:44,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-14 04:26:44,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273949714] [2021-07-14 04:26:44,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 04:26:44,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:26:44,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 04:26:44,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-07-14 04:26:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:44,127 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:26:44,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:26:44,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:44,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:44,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:26:44,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:26:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:44,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:26:44,588 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:26:44,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:26:44,588 INFO L82 PathProgramCache]: Analyzing trace with hash -534145269, now seen corresponding path program 1 times [2021-07-14 04:26:44,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:26:44,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682454530] [2021-07-14 04:26:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:26:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:26:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 04:26:44,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:26:44,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682454530] [2021-07-14 04:26:44,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682454530] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:44,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305829537] [2021-07-14 04:26:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:26:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:26:44,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 04:26:44,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:26:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 04:26:44,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305829537] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:44,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:26:44,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 04:26:44,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654385978] [2021-07-14 04:26:44,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 04:26:44,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:26:44,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 04:26:44,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 04:26:44,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:44,838 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:26:44,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:26:44,839 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:44,839 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:44,839 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:26:44,839 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:44,839 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:26:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:26:45,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:26:45,173 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:26:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:26:45,173 INFO L82 PathProgramCache]: Analyzing trace with hash -612440343, now seen corresponding path program 2 times [2021-07-14 04:26:45,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:26:45,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146298628] [2021-07-14 04:26:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:26:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:26:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:26:45,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:26:45,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146298628] [2021-07-14 04:26:45,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146298628] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:45,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727778521] [2021-07-14 04:26:45,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:26:45,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 04:26:45,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 04:26:45,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-07-14 04:26:45,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:26:46,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:26:46,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:26:46,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:26:46,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 49 [2021-07-14 04:26:46,035 INFO L550 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-07-14 04:26:46,043 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:26:46,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:26:46,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:26:46,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:26:46,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-07-14 04:26:46,059 INFO L550 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-07-14 04:26:46,065 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:26:46,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:26:46,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 49 [2021-07-14 04:26:46,119 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 04:26:46,163 INFO L628 ElimStorePlain]: treesize reduction 68, result has 33.3 percent of original size [2021-07-14 04:26:46,168 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-07-14 04:26:46,168 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:67, output treesize:3 [2021-07-14 04:26:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:26:46,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727778521] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:46,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:26:46,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-07-14 04:26:46,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368562373] [2021-07-14 04:26:46,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-14 04:26:46,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:26:46,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-14 04:26:46,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-07-14 04:26:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:46,200 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:26:46,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:26:46,200 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:46,200 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:46,200 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:26:46,200 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:46,200 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:26:46,200 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:26:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:26:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:47,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-14 04:26:47,525 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:26:47,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:26:47,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1455404871, now seen corresponding path program 3 times [2021-07-14 04:26:47,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:26:47,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619018567] [2021-07-14 04:26:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:26:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:26:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:26:47,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:26:47,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619018567] [2021-07-14 04:26:47,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619018567] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:47,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533003627] [2021-07-14 04:26:47,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:26:47,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-14 04:26:47,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 04:26:47,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 04:26:47,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:26:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:26:47,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533003627] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:47,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:26:47,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-07-14 04:26:47,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192118531] [2021-07-14 04:26:47,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-14 04:26:47,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:26:47,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-14 04:26:47,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-07-14 04:26:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:47,871 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:26:47,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:26:47,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:47,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:47,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:26:47,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:47,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:26:47,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:47,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:26:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:26:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 04:26:48,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:26:48,740 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:26:48,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:26:48,741 INFO L82 PathProgramCache]: Analyzing trace with hash 745695363, now seen corresponding path program 4 times [2021-07-14 04:26:48,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:26:48,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078942799] [2021-07-14 04:26:48,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:26:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:26:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 04:26:48,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:26:48,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078942799] [2021-07-14 04:26:48,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078942799] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:48,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630594894] [2021-07-14 04:26:48,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:26:48,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 04:26:48,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 04:26:48,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 04:26:48,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:26:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 04:26:49,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630594894] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:49,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:26:49,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-07-14 04:26:49,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022671930] [2021-07-14 04:26:49,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-14 04:26:49,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:26:49,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-14 04:26:49,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-07-14 04:26:49,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:49,014 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:26:49,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:26:49,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:49,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:49,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:26:49,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:49,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:26:49,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:49,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 04:26:49,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:26:49,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:26:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:26:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:26:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:26:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:26:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 04:26:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 04:26:49,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:26:49,425 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:26:49,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:26:49,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1268712863, now seen corresponding path program 5 times [2021-07-14 04:26:49,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:26:49,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395512089] [2021-07-14 04:26:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:26:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:26:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:26:49,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:26:49,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395512089] [2021-07-14 04:26:49,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395512089] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:26:49,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336353809] [2021-07-14 04:26:49,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:26:50,015 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 04:26:50,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 04:26:50,016 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-07-14 04:26:50,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:27:00,975 WARN L205 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 50 [2021-07-14 04:27:01,384 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-07-14 04:27:02,827 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 44 [2021-07-14 04:27:02,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:27:02,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:27:02,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:27:02,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:27:02,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:27:02,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 77 [2021-07-14 04:27:02,943 INFO L550 ElimStorePlain]: Start of recursive call 2: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-07-14 04:27:02,955 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:27:02,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:27:02,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:27:02,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:27:02,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:27:02,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:27:02,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 57 [2021-07-14 04:27:02,966 INFO L550 ElimStorePlain]: Start of recursive call 3: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-07-14 04:27:02,976 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:27:03,035 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:27:03,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 137 [2021-07-14 04:27:03,253 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 128 [2021-07-14 04:27:03,376 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 128 [2021-07-14 04:27:03,541 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 140 [2021-07-14 04:27:03,659 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-14 04:27:04,301 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 152 [2021-07-14 04:27:04,928 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 216 [2021-07-14 04:27:06,198 WARN L205 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 285 DAG size of output: 262 [2021-07-14 04:27:07,240 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 285 DAG size of output: 262 [2021-07-14 04:27:11,057 WARN L205 SmtUtils]: Spent 3.81 s on a formula simplification. DAG size of input: 296 DAG size of output: 318 [2021-07-14 04:27:11,562 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 130 [2021-07-14 04:27:11,943 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 151 [2021-07-14 04:27:14,462 WARN L205 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 353 DAG size of output: 333 [2021-07-14 04:27:15,592 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 291 DAG size of output: 268 [2021-07-14 04:27:16,599 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 260 DAG size of output: 261 [2021-07-14 04:27:17,736 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 264 DAG size of output: 265 [2021-07-14 04:27:18,796 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 263 DAG size of output: 264 [2021-07-14 04:27:22,245 WARN L205 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 264 DAG size of output: 311 [2021-07-14 04:27:22,558 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 130 [2021-07-14 04:27:22,899 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 151 [2021-07-14 04:27:25,159 WARN L205 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 345 DAG size of output: 321 [2021-07-14 04:27:26,167 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 259 DAG size of output: 261 [2021-07-14 04:27:27,176 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 259 DAG size of output: 261 [2021-07-14 04:27:28,318 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 263 DAG size of output: 265 [2021-07-14 04:27:28,322 INFO L550 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-07-14 04:27:30,063 WARN L205 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 266 DAG size of output: 254 [2021-07-14 04:27:30,065 INFO L628 ElimStorePlain]: treesize reduction 1423, result has 94.1 percent of original size [2021-07-14 04:27:31,326 WARN L205 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 255 DAG size of output: 257 [2021-07-14 04:27:32,261 WARN L205 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 244 [2021-07-14 04:27:32,581 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 201 [2021-07-14 04:27:33,342 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 143 [2021-07-14 04:27:34,306 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 201 [2021-07-14 04:27:34,564 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 143 [2021-07-14 04:27:34,988 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 143 [2021-07-14 04:27:35,268 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-07-14 04:27:35,269 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:106, output treesize:3 [2021-07-14 04:27:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:27:35,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336353809] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:27:35,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:27:35,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2021-07-14 04:27:35,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437380286] [2021-07-14 04:27:35,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-07-14 04:27:35,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:27:35,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-07-14 04:27:35,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=740, Unknown=5, NotChecked=0, Total=870 [2021-07-14 04:27:35,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:27:35,298 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:27:35,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:27:35,298 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:27:35,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:27:35,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:27:35,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:27:35,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:27:35,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:27:35,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 04:27:35,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 04:27:35,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:29:20,484 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 70 [2021-07-14 04:29:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:29:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:29:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:29:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:29:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:29:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:29:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 04:29:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 04:29:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 04:29:21,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-07-14 04:29:21,082 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:29:21,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:29:21,082 INFO L82 PathProgramCache]: Analyzing trace with hash -672919301, now seen corresponding path program 6 times [2021-07-14 04:29:21,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:29:21,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898998147] [2021-07-14 04:29:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:29:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:29:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:29:21,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:29:21,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898998147] [2021-07-14 04:29:21,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898998147] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:29:21,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656166543] [2021-07-14 04:29:21,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:29:21,280 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-14 04:29:21,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 04:29:21,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 04:29:21,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:29:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:29:21,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656166543] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:29:21,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:29:21,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-07-14 04:29:21,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290163052] [2021-07-14 04:29:21,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-07-14 04:29:21,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:29:21,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-07-14 04:29:21,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-07-14 04:29:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:29:21,545 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:29:21,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:29:21,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:29:21,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:29:21,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:29:21,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:29:21,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:29:21,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:29:21,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 04:29:21,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 04:29:21,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 04:29:21,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:29:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 04:29:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:29:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:29:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:29:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:29:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:29:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 04:29:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 04:29:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 04:29:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 04:29:22,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable520 [2021-07-14 04:29:22,127 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:29:22,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:29:22,127 INFO L82 PathProgramCache]: Analyzing trace with hash -402004775, now seen corresponding path program 7 times [2021-07-14 04:29:22,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:29:22,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396470542] [2021-07-14 04:29:22,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:29:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:29:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:29:22,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:29:22,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396470542] [2021-07-14 04:29:22,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396470542] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:29:22,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010609020] [2021-07-14 04:29:22,975 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:29:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:29:23,015 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 64 conjunts are in the unsatisfiable core [2021-07-14 04:29:23,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:29:23,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:29:23,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:29:23,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:29:23,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 109 [2021-07-14 04:29:23,949 INFO L550 ElimStorePlain]: Start of recursive call 2: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-07-14 04:29:23,958 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:29:23,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:29:23,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:29:23,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:29:23,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:29:23,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 77 [2021-07-14 04:29:23,973 INFO L550 ElimStorePlain]: Start of recursive call 3: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-07-14 04:29:23,981 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:29:24,112 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-07-14 04:29:24,112 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:29:24,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 77 treesize of output 273 [2021-07-14 04:29:24,528 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 191 [2021-07-14 04:29:25,531 WARN L205 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 213 [2021-07-14 04:29:28,049 WARN L205 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 256 DAG size of output: 236 [2021-07-14 04:29:30,579 WARN L205 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 256 DAG size of output: 236 [2021-07-14 04:29:33,293 WARN L205 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 278 DAG size of output: 258 [2021-07-14 04:29:40,449 WARN L205 SmtUtils]: Spent 7.14 s on a formula simplification. DAG size of input: 258 DAG size of output: 279 [2021-07-14 04:29:47,695 WARN L205 SmtUtils]: Spent 7.24 s on a formula simplification. DAG size of input: 253 DAG size of output: 277 [2021-07-14 04:29:49,573 WARN L205 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 245 DAG size of output: 245 [2021-07-14 04:29:50,278 WARN L205 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 224 [2021-07-14 04:29:51,391 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 205 DAG size of output: 222 [2021-07-14 04:29:51,642 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2021-07-14 04:29:51,925 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 138 [2021-07-14 04:29:52,568 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 271 [2021-07-14 04:29:53,500 WARN L205 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 333 [2021-07-14 04:29:53,881 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 144 [2021-07-14 04:29:54,410 WARN L205 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 159 [2021-07-14 04:29:57,395 WARN L205 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 454 DAG size of output: 409 [2021-07-14 04:30:05,260 WARN L205 SmtUtils]: Spent 7.86 s on a formula simplification. DAG size of input: 535 DAG size of output: 484 [2021-07-14 04:30:05,517 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 152 [2021-07-14 04:30:05,918 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 168 [2021-07-14 04:30:25,822 WARN L205 SmtUtils]: Spent 19.90 s on a formula simplification. DAG size of input: 627 DAG size of output: 562 [2021-07-14 04:30:26,089 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 135 [2021-07-14 04:30:26,499 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 164 [2021-07-14 04:31:14,484 WARN L205 SmtUtils]: Spent 47.98 s on a formula simplification. DAG size of input: 708 DAG size of output: 630 [2021-07-14 04:33:10,663 WARN L205 SmtUtils]: Spent 1.94 m on a formula simplification. DAG size of input: 789 DAG size of output: 709 [2021-07-14 04:37:46,455 WARN L205 SmtUtils]: Spent 4.60 m on a formula simplification. DAG size of input: 865 DAG size of output: 781 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown