/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 22:50:55,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 22:50:55,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 22:50:55,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 22:50:55,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-06 22:50:55,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-06 22:50:55,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-06 22:50:55,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random521.epf [2021-06-06 22:50:55,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 22:50:55,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 22:50:55,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 22:50:55,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 22:50:55,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 22:50:55,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 22:50:55,331 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 22:50:55,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 22:50:55,331 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 22:50:55,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 22:50:55,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 22:50:55,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 22:50:55,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 22:50:55,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 22:50:55,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 22:50:55,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 22:50:55,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 22:50:55,333 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 22:50:55,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 22:50:55,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 22:50:55,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 22:50:55,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 22:50:55,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 22:50:55,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 22:50:55,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 22:50:55,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 22:50:55,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 22:50:55,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 22:50:55,334 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-06 22:50:55,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 22:50:55,334 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 22:50:55,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 22:50:55,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 22:50:55,334 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 22:50:55,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-06 22:50:55,335 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 22:50:55,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 22:50:55,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 22:50:55,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 22:50:55,582 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 22:50:55,583 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 22:50:55,584 INFO L432 ainManager$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 [2021-06-06 22:50:55,584 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' [2021-06-06 22:50:55,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 22:50:55,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 22:50:55,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 22:50:55,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 22:50:55,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 22:50:55,626 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 06.06 10:50:55" (1/1) ... [2021-06-06 22:50:55,632 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 06.06 10:50:55" (1/1) ... [2021-06-06 22:50:55,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 22:50:55,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 22:50:55,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 22:50:55,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 22:50:55,643 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 06.06 10:50:55" (1/1) ... [2021-06-06 22:50:55,644 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 06.06 10:50:55" (1/1) ... [2021-06-06 22:50:55,645 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 06.06 10:50:55" (1/1) ... [2021-06-06 22:50:55,645 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 06.06 10:50:55" (1/1) ... [2021-06-06 22:50:55,649 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 06.06 10:50:55" (1/1) ... [2021-06-06 22:50:55,652 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 06.06 10:50:55" (1/1) ... [2021-06-06 22:50:55,652 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 06.06 10:50:55" (1/1) ... [2021-06-06 22:50:55,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 22:50:55,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 22:50:55,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 22:50:55,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 22:50:55,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:50:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 22:50:55,715 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 22:50:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 22:50:55,715 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 22:50:55,715 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 22:50:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 22:50:55,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 22:50:55,716 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 22:50:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 22:50:55,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 22:50:55,717 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 22:50:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 22:50:55,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 22:50:55,718 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 22:50:55,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 22:50:55,924 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 22:50:55,925 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 10:50:55 BoogieIcfgContainer [2021-06-06 22:50:55,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 22:50:55,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 22:50:55,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 22:50:55,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 22:50:55,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:50:55" (1/2) ... [2021-06-06 22:50:55,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d62ea and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 10:50:55, skipping insertion in model container [2021-06-06 22:50:55,930 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 06.06 10:50:55" (2/2) ... [2021-06-06 22:50:55,930 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-06-06 22:50:55,934 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 22:50:55,934 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 22:50:55,935 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 22:50:55,935 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 22:50:55,958 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-06 22:50:55,972 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 22:50:56,006 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 22:50:56,007 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 22:50:56,007 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 22:50:56,007 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 22:50:56,007 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 22:50:56,007 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 22:50:56,007 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 22:50:56,007 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 22:50:56,089 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:50:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:50:56,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1573511815, now seen corresponding path program 1 times [2021-06-06 22:50:56,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:50:56,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217935451] [2021-06-06 22:50:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:50:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:50:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:50:56,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:50:56,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217935451] [2021-06-06 22:50:56,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217935451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 22:50:56,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 22:50:56,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 22:50:56,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523962872] [2021-06-06 22:50:56,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-06 22:50:56,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:50:56,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-06 22:50:56,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-06 22:50:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:56,250 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:50:56,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 22:50:56,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 22:50:56,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 22:50:56,316 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:50:56,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:50:56,318 INFO L82 PathProgramCache]: Analyzing trace with hash -729941915, now seen corresponding path program 1 times [2021-06-06 22:50:56,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:50:56,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87430815] [2021-06-06 22:50:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:50:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:50:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 22:50:56,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:50:56,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87430815] [2021-06-06 22:50:56,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87430815] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 22:50:56,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 22:50:56,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 22:50:56,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371671408] [2021-06-06 22:50:56,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 22:50:56,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:50:56,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 22:50:56,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-06 22:50:56,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:56,364 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:50:56,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 22:50:56,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 22:50:56,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 22:50:56,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:50:56,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 22:50:56,408 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:50:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:50:56,409 INFO L82 PathProgramCache]: Analyzing trace with hash 2128888839, now seen corresponding path program 1 times [2021-06-06 22:50:56,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:50:56,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322782775] [2021-06-06 22:50:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:50:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:50:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 22:50:56,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:50:56,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322782775] [2021-06-06 22:50:56,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322782775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:50:56,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340748395] [2021-06-06 22:50:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:50:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:50:56,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-06 22:50:56,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 22:50:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 22:50:56,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340748395] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:50:56,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 22:50:56,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-06 22:50:56,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770792243] [2021-06-06 22:50:56,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 22:50:56,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:50:56,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 22:50:56,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-06 22:50:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:56,616 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:50:56,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 22:50:56,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 22:50:56,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:50:56,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 22:50:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:50:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 22:50:56,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:50:56,928 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:50:56,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:50:56,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1346487579, now seen corresponding path program 2 times [2021-06-06 22:50:56,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:50:56,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629673760] [2021-06-06 22:50:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:50:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:50:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:50:57,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:50:57,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629673760] [2021-06-06 22:50:57,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629673760] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:50:57,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583824319] [2021-06-06 22:50:57,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:50:57,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 22:50:57,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 22:50:57,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 22:50:57,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 22:50:57,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:50:57,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 51 [2021-06-06 22:50:57,637 INFO L550 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-06-06 22:50:57,657 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:50:57,668 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:50:57,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 43 [2021-06-06 22:50:57,746 INFO L550 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-06-06 22:50:57,771 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:50:57,794 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:50:57,795 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 27 treesize of output 47 [2021-06-06 22:50:57,809 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-06-06 22:50:57,870 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:50:58,004 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. [2021-06-06 22:50:58,005 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:57, output treesize:194 [2021-06-06 22:50:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:50:58,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583824319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:50:58,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 22:50:58,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 22:50:58,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124041528] [2021-06-06 22:50:58,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 22:50:58,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:50:58,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 22:50:58,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-06-06 22:50:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:58,134 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:50:58,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 22:50:58,134 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 22:50:58,134 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:50:58,134 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 22:50:58,134 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 22:50:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:50:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 22:50:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 22:50:58,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:50:58,765 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:50:58,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:50:58,765 INFO L82 PathProgramCache]: Analyzing trace with hash 301331011, now seen corresponding path program 3 times [2021-06-06 22:50:58,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:50:58,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130534653] [2021-06-06 22:50:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:50:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:50:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:50:58,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:50:58,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130534653] [2021-06-06 22:50:58,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130534653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:50:58,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746754205] [2021-06-06 22:50:58,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:50:58,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 22:50:58,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 22:50:58,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 22:50:58,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 22:50:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:50:58,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746754205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:50:58,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 22:50:58,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 22:50:58,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733162968] [2021-06-06 22:50:58,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 22:50:58,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:50:58,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 22:50:58,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 22:50:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:58,993 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:50:58,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 22:50:58,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 22:50:58,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:50:58,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 22:50:58,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 22:50:58,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 22:50:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:50:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 22:50:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 22:50:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 22:50:59,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:50:59,553 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:50:59,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:50:59,553 INFO L82 PathProgramCache]: Analyzing trace with hash -535467769, now seen corresponding path program 4 times [2021-06-06 22:50:59,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:50:59,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031331995] [2021-06-06 22:50:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:50:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:50:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 22:50:59,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:50:59,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031331995] [2021-06-06 22:50:59,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031331995] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:50:59,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660281964] [2021-06-06 22:50:59,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:50:59,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 22:50:59,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 22:50:59,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 22:50:59,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 22:50:59,735 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 22:50:59,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660281964] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:50:59,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 22:50:59,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 22:50:59,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640205952] [2021-06-06 22:50:59,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 22:50:59,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:50:59,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 22:50:59,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-06 22:50:59,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:59,739 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:50:59,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 22:50:59,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 22:50:59,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:50:59,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-06 22:50:59,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-06 22:50:59,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-06 22:50:59,741 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 22:50:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:50:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 22:50:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 22:50:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 22:50:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 22:51:00,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-06-06 22:51:00,051 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:51:00,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:51:00,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2112987621, now seen corresponding path program 5 times [2021-06-06 22:51:00,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:51:00,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391535826] [2021-06-06 22:51:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:51:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:51:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:51:00,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:51:00,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391535826] [2021-06-06 22:51:00,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391535826] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:51:00,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105411158] [2021-06-06 22:51:00,428 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:51:00,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 22:51:00,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 22:51:00,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-06 22:51:00,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 22:51:05,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 22:51:05,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:51:05,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:51:05,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:51:05,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 63 [2021-06-06 22:51:05,033 INFO L550 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-06 22:51:05,043 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:51:05,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 22:51:05,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:51:05,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:51:05,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:51:05,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 47 [2021-06-06 22:51:05,071 INFO L550 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-06 22:51:05,079 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:51:05,110 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:51:05,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 87 [2021-06-06 22:51:15,416 WARN L205 SmtUtils]: Spent 3.82 s on a formula simplification. DAG size of input: 5504 DAG size of output: 5502 [2021-06-06 22:51:20,736 WARN L205 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 5640 DAG size of output: 5591 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown