/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-NewStatesSleepPersistentFixedOrder-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array-hom.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 16:52:34,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 16:52:34,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 16:52:34,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 16:52:34,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 16:52:34,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 16:52:34,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 16:52:34,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 16:52:34,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 16:52:34,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 16:52:34,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 16:52:34,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 16:52:34,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 16:52:34,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 16:52:34,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 16:52:34,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 16:52:34,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 16:52:34,293 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-NewStatesSleepPersistentFixedOrder-NoLbe.epf [2021-07-14 16:52:34,341 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 16:52:34,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 16:52:34,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 16:52:34,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 16:52:34,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 16:52:34,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 16:52:34,345 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 16:52:34,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 16:52:34,345 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 16:52:34,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 16:52:34,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 16:52:34,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 16:52:34,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 16:52:34,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 16:52:34,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 16:52:34,347 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 16:52:34,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 16:52:34,347 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 16:52:34,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 16:52:34,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 16:52:34,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 16:52:34,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 16:52:34,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 16:52:34,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 16:52:34,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 16:52:34,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 16:52:34,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 16:52:34,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 16:52:34,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 16:52:34,349 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 16:52:34,349 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 16:52:34,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 16:52:34,350 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 16:52:34,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 16:52:34,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 16:52:34,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 16:52:34,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 16:52:34,661 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 16:52:34,662 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 16:52:34,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array-hom.wvr.bpl [2021-07-14 16:52:34,663 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array-hom.wvr.bpl' [2021-07-14 16:52:34,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 16:52:34,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 16:52:34,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 16:52:34,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 16:52:34,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 16:52:34,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:52:34" (1/1) ... [2021-07-14 16:52:34,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:52:34" (1/1) ... [2021-07-14 16:52:34,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 16:52:34,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 16:52:34,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 16:52:34,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 16:52:34,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:52:34" (1/1) ... [2021-07-14 16:52:34,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:52:34" (1/1) ... [2021-07-14 16:52:34,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:52:34" (1/1) ... [2021-07-14 16:52:34,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:52:34" (1/1) ... [2021-07-14 16:52:34,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:52:34" (1/1) ... [2021-07-14 16:52:34,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:52:34" (1/1) ... [2021-07-14 16:52:34,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:52:34" (1/1) ... [2021-07-14 16:52:34,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 16:52:34,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 16:52:34,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 16:52:34,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 16:52:34,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:52:34" (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 16:52:34,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 16:52:34,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 16:52:34,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 16:52:34,803 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 16:52:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 16:52:34,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 16:52:34,803 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 16:52:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 16:52:34,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 16:52:34,803 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 16:52:34,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 16:52:34,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 16:52:34,804 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 16:52:35,029 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 16:52:35,029 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 16:52:35,031 INFO L202 PluginConnector]: Adding new model sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:52:35 BoogieIcfgContainer [2021-07-14 16:52:35,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 16:52:35,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 16:52:35,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 16:52:35,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 16:52:35,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:52:34" (1/2) ... [2021-07-14 16:52:35,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348990b7 and model type sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 04:52:35, skipping insertion in model container [2021-07-14 16:52:35,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:52:35" (2/2) ... [2021-07-14 16:52:35,037 INFO L111 eAbstractionObserver]: Analyzing ICFG sum-array-hom.wvr.bpl [2021-07-14 16:52:35,058 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 16:52:35,059 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 16:52:35,059 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 16:52:35,059 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 16:52:35,126 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 16:52:35,144 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 16:52:35,219 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 16:52:35,219 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 16:52:35,219 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 16:52:35,219 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 16:52:35,220 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 16:52:35,220 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 16:52:35,220 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 16:52:35,220 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 16:52:35,304 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:52:35,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:52:35,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1762402312, now seen corresponding path program 1 times [2021-07-14 16:52:35,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:52:35,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939364949] [2021-07-14 16:52:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:52:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:52:35,530 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 16:52:35,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:52:35,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939364949] [2021-07-14 16:52:35,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939364949] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 16:52:35,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 16:52:35,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 16:52:35,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954885278] [2021-07-14 16:52:35,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-14 16:52:35,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:52:35,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-14 16:52:35,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-14 16:52:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:35,555 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:52:35,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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 16:52:35,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:35,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:35,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 16:52:35,635 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:52:35,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:52:35,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1272455018, now seen corresponding path program 1 times [2021-07-14 16:52:35,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:52:35,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808035170] [2021-07-14 16:52:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:52:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:52:35,691 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 16:52:35,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:52:35,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808035170] [2021-07-14 16:52:35,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808035170] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 16:52:35,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 16:52:35,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 16:52:35,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458543214] [2021-07-14 16:52:35,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 16:52:35,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:52:35,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 16:52:35,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 16:52:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:35,701 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:52:35,702 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 16:52:35,702 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:35,702 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:35,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:35,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 16:52:35,759 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:52:35,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:52:35,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1673281716, now seen corresponding path program 1 times [2021-07-14 16:52:35,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:52:35,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281506609] [2021-07-14 16:52:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:52:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:52:36,037 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 16:52:36,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:52:36,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281506609] [2021-07-14 16:52:36,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281506609] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:36,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141252954] [2021-07-14 16:52:36,038 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 16:52:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:52:36,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-07-14 16:52:36,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:52:36,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 16:52:36,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-14 16:52:36,350 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 16:52:36,356 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 16:52:36,359 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 16:52:36,359 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2021-07-14 16:52:36,391 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 16:52:36,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141252954] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:36,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:52:36,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 16:52:36,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337747724] [2021-07-14 16:52:36,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 16:52:36,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:52:36,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 16:52:36,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-07-14 16:52:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:36,394 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:52:36,394 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 16:52:36,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:36,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:36,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:36,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:52:36,747 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:52:36,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:52:36,748 INFO L82 PathProgramCache]: Analyzing trace with hash -811417006, now seen corresponding path program 2 times [2021-07-14 16:52:36,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:52:36,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463564909] [2021-07-14 16:52:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:52:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:52:36,815 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 16:52:36,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:52:36,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463564909] [2021-07-14 16:52:36,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463564909] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:36,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017754752] [2021-07-14 16:52:36,816 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 16:52:36,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 16:52:36,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 16:52:36,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 16:52:36,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:52:36,970 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 16:52:36,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017754752] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:36,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:52:36,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-14 16:52:36,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071709322] [2021-07-14 16:52:36,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 16:52:36,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:52:36,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 16:52:36,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-07-14 16:52:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:36,972 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:52:36,972 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 16:52:36,972 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:36,973 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:36,973 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:36,973 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:52:37,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:52:37,365 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:52:37,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:52:37,365 INFO L82 PathProgramCache]: Analyzing trace with hash 186541582, now seen corresponding path program 1 times [2021-07-14 16:52:37,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:52:37,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672017248] [2021-07-14 16:52:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:52:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:52:37,452 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 16:52:37,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:52:37,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672017248] [2021-07-14 16:52:37,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672017248] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:37,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825499739] [2021-07-14 16:52:37,453 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 16:52:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:52:37,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 16:52:37,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:52:37,598 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 16:52:37,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825499739] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:37,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:52:37,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 16:52:37,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212680455] [2021-07-14 16:52:37,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 16:52:37,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:52:37,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 16:52:37,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 16:52:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:37,600 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:52:37,600 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 16:52:37,600 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:37,600 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:37,600 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:37,601 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:52:37,601 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:52:37,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:52:37,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:52:37,977 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:52:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:52:37,977 INFO L82 PathProgramCache]: Analyzing trace with hash 477673772, now seen corresponding path program 2 times [2021-07-14 16:52:37,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:52:37,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938208027] [2021-07-14 16:52:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:52:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:52:38,359 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 16:52:38,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:52:38,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938208027] [2021-07-14 16:52:38,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938208027] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:38,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496584158] [2021-07-14 16:52:38,360 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 16:52:38,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 16:52:38,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 16:52:38,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-07-14 16:52:38,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:52:38,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:52:38,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:52:38,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 16:52:38,760 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 27 treesize of output 15 [2021-07-14 16:52:38,761 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 16:52:38,766 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 16:52:38,768 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 16:52:38,769 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:5 [2021-07-14 16:52:38,806 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 16:52:38,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496584158] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:38,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:52:38,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-07-14 16:52:38,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163215970] [2021-07-14 16:52:38,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-14 16:52:38,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:52:38,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-14 16:52:38,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-07-14 16:52:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:38,808 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:52:38,808 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 16:52:38,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:38,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:38,809 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:38,809 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:52:38,809 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:52:38,809 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:52:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:52:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:52:39,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-14 16:52:39,969 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:52:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:52:39,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1082834122, now seen corresponding path program 3 times [2021-07-14 16:52:39,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:52:39,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281167613] [2021-07-14 16:52:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:52:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:52:40,072 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 16:52:40,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:52:40,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281167613] [2021-07-14 16:52:40,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281167613] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:40,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114487224] [2021-07-14 16:52:40,073 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 16:52:40,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-14 16:52:40,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 16:52:40,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 16:52:40,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:52:40,342 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 16:52:40,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114487224] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:40,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:52:40,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-07-14 16:52:40,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417921940] [2021-07-14 16:52:40,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-14 16:52:40,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:52:40,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-14 16:52:40,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-07-14 16:52:40,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:40,348 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:52:40,349 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 16:52:40,349 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:40,349 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:40,349 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:40,349 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:52:40,349 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:52:40,349 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:52:40,349 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:52:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:52:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:52:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 16:52:40,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:52:40,981 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:52:40,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:52:40,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2048156806, now seen corresponding path program 4 times [2021-07-14 16:52:40,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:52:40,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840026719] [2021-07-14 16:52:40,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:52:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:52:41,071 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 16:52:41,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:52:41,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840026719] [2021-07-14 16:52:41,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840026719] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:41,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533781640] [2021-07-14 16:52:41,072 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 16:52:41,105 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 16:52:41,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 16:52:41,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 16:52:41,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:52:41,250 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 16:52:41,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533781640] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:41,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:52:41,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-07-14 16:52:41,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328183728] [2021-07-14 16:52:41,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-14 16:52:41,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:52:41,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-14 16:52:41,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-07-14 16:52:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:41,251 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:52:41,252 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 16:52:41,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:41,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:41,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:41,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:52:41,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:52:41,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:52:41,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 16:52:41,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:52:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:52:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:52:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 16:52:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 16:52:41,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:52:41,677 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:52:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:52:41,677 INFO L82 PathProgramCache]: Analyzing trace with hash 561035684, now seen corresponding path program 5 times [2021-07-14 16:52:41,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:52:41,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12012776] [2021-07-14 16:52:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:52:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:52:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:52:42,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:52:42,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12012776] [2021-07-14 16:52:42,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12012776] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:42,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840123248] [2021-07-14 16:52:42,197 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 16:52:42,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 16:52:42,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 16:52:42,236 WARN L261 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 50 conjunts are in the unsatisfiable core [2021-07-14 16:52:42,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:52:43,079 INFO L354 Elim1Store]: treesize reduction 118, result has 2.5 percent of original size [2021-07-14 16:52:43,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 121 treesize of output 73 [2021-07-14 16:52:43,082 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 16:52:43,089 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 16:52:43,091 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 16:52:43,091 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:126, output treesize:5 [2021-07-14 16:52:43,121 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 16:52:43,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840123248] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:43,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:52:43,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2021-07-14 16:52:43,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290397135] [2021-07-14 16:52:43,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-07-14 16:52:43,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:52:43,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-07-14 16:52:43,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2021-07-14 16:52:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:43,123 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:52:43,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 16:52:43,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:43,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:43,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:43,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:52:43,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:52:43,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:52:43,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 16:52:43,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 16:52:43,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:52:45,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 16:52:45,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:52:45,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:52:45,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:52:45,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:52:45,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:52:45,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 16:52:45,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 16:52:45,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 16:52:45,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-07-14 16:52:45,228 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:52:45,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:52:45,229 INFO L82 PathProgramCache]: Analyzing trace with hash -352082848, now seen corresponding path program 6 times [2021-07-14 16:52:45,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:52:45,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235045330] [2021-07-14 16:52:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:52:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:52:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:52:45,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:52:45,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235045330] [2021-07-14 16:52:45,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235045330] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:52:45,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551900680] [2021-07-14 16:52:45,843 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 16:52:45,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-14 16:52:45,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 16:52:45,884 WARN L261 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 60 conjunts are in the unsatisfiable core [2021-07-14 16:52:45,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:52:47,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:52:47,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:52:47,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:52:47,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:52:47,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:52:47,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:52:47,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:52:47,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:52:47,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:52:47,317 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-07-14 16:52:47,318 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 16:52:47,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 24 case distinctions, treesize of input 52 treesize of output 246 [2021-07-14 16:52:47,988 WARN L205 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 820 DAG size of output: 575 [2021-07-14 16:52:48,401 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 836 DAG size of output: 590 [2021-07-14 16:52:49,124 WARN L205 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 587 [2021-07-14 16:52:49,352 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 547 DAG size of output: 547 [2021-07-14 16:52:49,721 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 476 DAG size of output: 546 [2021-07-14 16:52:50,046 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 472 DAG size of output: 511 [2021-07-14 16:52:50,791 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 520 DAG size of output: 430 [2021-07-14 16:52:51,940 WARN L205 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 1619 DAG size of output: 1183 [2021-07-14 16:52:52,964 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 1840 DAG size of output: 1339 [2021-07-14 16:52:53,681 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 504 DAG size of output: 375 [2021-07-14 16:52:53,866 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 589 DAG size of output: 432 [2021-07-14 16:52:55,141 WARN L205 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 2145 DAG size of output: 1563 [2021-07-14 16:52:56,871 WARN L205 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 2369 DAG size of output: 1754 [2021-07-14 16:52:58,625 WARN L205 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 2369 DAG size of output: 1754 [2021-07-14 16:53:00,444 WARN L205 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 2375 DAG size of output: 1760 [2021-07-14 16:53:00,632 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 454 DAG size of output: 451 [2021-07-14 16:53:01,080 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 453 DAG size of output: 525 [2021-07-14 16:53:01,493 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 449 DAG size of output: 555 [2021-07-14 16:53:01,660 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 443 DAG size of output: 443 [2021-07-14 16:53:01,781 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 379 [2021-07-14 16:53:02,358 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 587 DAG size of output: 556 [2021-07-14 16:53:02,863 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 287 [2021-07-14 16:53:03,492 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 900 DAG size of output: 770 [2021-07-14 16:53:03,853 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 1209 DAG size of output: 1030 [2021-07-14 16:53:04,401 WARN L205 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 1597 DAG size of output: 1392 [2021-07-14 16:53:05,064 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 563 DAG size of output: 539 [2021-07-14 16:53:05,207 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 601 DAG size of output: 577 [2021-07-14 16:53:06,059 WARN L205 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 1891 DAG size of output: 1677 [2021-07-14 16:53:07,255 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 2187 DAG size of output: 1937 [2021-07-14 16:53:08,881 WARN L205 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 2352 DAG size of output: 2094 [2021-07-14 16:53:10,519 WARN L205 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 2352 DAG size of output: 2094 [2021-07-14 16:53:12,253 WARN L205 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 2359 DAG size of output: 2101 [2021-07-14 16:53:13,451 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 1883 DAG size of output: 1893 [2021-07-14 16:53:13,597 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 376 DAG size of output: 376 [2021-07-14 16:53:14,175 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 337 [2021-07-14 16:53:15,239 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 729 DAG size of output: 688 [2021-07-14 16:53:15,522 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 789 DAG size of output: 748 [2021-07-14 16:53:15,998 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 301 [2021-07-14 16:53:16,102 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 301 [2021-07-14 16:53:16,329 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 366 [2021-07-14 16:53:17,041 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 615 DAG size of output: 590 [2021-07-14 16:53:18,868 WARN L205 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 892 DAG size of output: 787 [2021-07-14 16:53:19,562 WARN L205 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 1380 DAG size of output: 1254 [2021-07-14 16:53:20,764 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 2021 DAG size of output: 1861 [2021-07-14 16:53:21,328 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 444 DAG size of output: 354 [2021-07-14 16:53:21,568 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 411 [2021-07-14 16:53:21,716 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 411 [2021-07-14 16:53:21,951 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 516 DAG size of output: 415 [2021-07-14 16:53:23,520 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 578 DAG size of output: 555 [2021-07-14 16:53:23,727 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 765 DAG size of output: 742 [2021-07-14 16:53:24,070 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 940 DAG size of output: 904 [2021-07-14 16:53:24,860 WARN L205 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 1160 DAG size of output: 1097 [2021-07-14 16:53:26,891 WARN L205 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 2857 DAG size of output: 2640 [2021-07-14 16:53:27,743 WARN L205 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 1639 DAG size of output: 1649 [2021-07-14 16:53:28,280 WARN L205 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 1362 DAG size of output: 1371 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown