/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-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-b7a4f01caba76767183cf06280be652b0b124764-b7a4f01 [2021-06-07 16:37:25,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-07 16:37:25,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-07 16:37:25,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-07 16:37:25,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-07 16:37:25,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-07 16:37:25,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-07 16:37:25,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-07 16:37:25,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-07 16:37:25,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-07 16:37:25,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-07 16:37:25,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-07 16:37:25,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-07 16:37:25,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-07 16:37:25,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-07 16:37:25,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-07 16:37:25,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-07 16:37:25,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-07 16:37:25,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-07 16:37:25,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-07 16:37:25,192 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-Lockstep.epf [2021-06-07 16:37:25,218 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-07 16:37:25,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-07 16:37:25,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-07 16:37:25,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-07 16:37:25,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-07 16:37:25,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-07 16:37:25,221 INFO L138 SettingsManager]: * Use SBE=true [2021-06-07 16:37:25,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-07 16:37:25,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-07 16:37:25,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-07 16:37:25,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-07 16:37:25,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-07 16:37:25,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-07 16:37:25,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-07 16:37:25,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-07 16:37:25,223 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-07 16:37:25,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-07 16:37:25,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-07 16:37:25,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-07 16:37:25,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-07 16:37:25,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-07 16:37:25,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-07 16:37:25,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-07 16:37:25,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-07 16:37:25,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-07 16:37:25,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-07 16:37:25,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-07 16:37:25,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-07 16:37:25,224 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-07 16:37:25,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-07 16:37:25,224 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-07 16:37:25,225 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-07 16:37:25,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-07 16:37:25,225 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-07 16:37:25,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-07 16:37:25,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-07 16:37:25,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-07 16:37:25,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-07 16:37:25,474 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-07 16:37:25,475 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-07 16:37:25,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product.wvr.bpl [2021-06-07 16:37:25,476 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product.wvr.bpl' [2021-06-07 16:37:25,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-07 16:37:25,514 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-07 16:37:25,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-07 16:37:25,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-07 16:37:25,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-07 16:37:25,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:37:25" (1/1) ... [2021-06-07 16:37:25,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:37:25" (1/1) ... [2021-06-07 16:37:25,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-07 16:37:25,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-07 16:37:25,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-07 16:37:25,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-07 16:37:25,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:37:25" (1/1) ... [2021-06-07 16:37:25,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:37:25" (1/1) ... [2021-06-07 16:37:25,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:37:25" (1/1) ... [2021-06-07 16:37:25,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:37:25" (1/1) ... [2021-06-07 16:37:25,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:37:25" (1/1) ... [2021-06-07 16:37:25,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:37:25" (1/1) ... [2021-06-07 16:37:25,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:37:25" (1/1) ... [2021-06-07 16:37:25,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-07 16:37:25,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-07 16:37:25,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-07 16:37:25,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-07 16:37:25,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:37:25" (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 [2021-06-07 16:37:25,616 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-07 16:37:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-07 16:37:25,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-07 16:37:25,617 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-07 16:37:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-07 16:37:25,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-07 16:37:25,617 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-07 16:37:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-07 16:37:25,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-07 16:37:25,619 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-07 16:37:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-07 16:37:25,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-07 16:37:25,619 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-07 16:37:25,756 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-07 16:37:25,756 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-07 16:37:25,758 INFO L202 PluginConnector]: Adding new model dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 04:37:25 BoogieIcfgContainer [2021-06-07 16:37:25,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-07 16:37:25,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-07 16:37:25,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-07 16:37:25,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-07 16:37:25,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:37:25" (1/2) ... [2021-06-07 16:37:25,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab7e221 and model type dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.06 04:37:25, skipping insertion in model container [2021-06-07 16:37:25,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 04:37:25" (2/2) ... [2021-06-07 16:37:25,763 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product.wvr.bpl [2021-06-07 16:37:25,766 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-07 16:37:25,766 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-07 16:37:25,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-07 16:37:25,767 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-07 16:37:25,802 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-07 16:37:25,838 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 [2021-06-07 16:37:25,880 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-07 16:37:25,887 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-07 16:37:25,887 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-07 16:37:25,887 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-07 16:37:25,888 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-07 16:37:25,888 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-07 16:37:25,888 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-07 16:37:25,888 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-07 16:37:25,954 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 16:37:25,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 16:37:25,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1061400579, now seen corresponding path program 1 times [2021-06-07 16:37:25,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 16:37:25,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752045647] [2021-06-07 16:37:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 16:37:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 16:37:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 16:37:26,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 16:37:26,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752045647] [2021-06-07 16:37:26,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752045647] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 16:37:26,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 16:37:26,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-07 16:37:26,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012684324] [2021-06-07 16:37:26,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-07 16:37:26,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 16:37:26,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-07 16:37:26,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-07 16:37:26,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:26,059 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 16:37:26,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 16:37:26,060 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:26,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-07 16:37:26,085 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 16:37:26,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 16:37:26,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1575970977, now seen corresponding path program 1 times [2021-06-07 16:37:26,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 16:37:26,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908424152] [2021-06-07 16:37:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 16:37:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 16:37:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 16:37:26,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 16:37:26,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908424152] [2021-06-07 16:37:26,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908424152] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 16:37:26,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 16:37:26,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-07 16:37:26,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502769056] [2021-06-07 16:37:26,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-07 16:37:26,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 16:37:26,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-07 16:37:26,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-07 16:37:26,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:26,119 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 16:37:26,119 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) [2021-06-07 16:37:26,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:26,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:26,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:26,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:26,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-07 16:37:26,151 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 16:37:26,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 16:37:26,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1308646271, now seen corresponding path program 1 times [2021-06-07 16:37:26,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 16:37:26,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36606367] [2021-06-07 16:37:26,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 16:37:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 16:37:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 16:37:26,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 16:37:26,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36606367] [2021-06-07 16:37:26,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36606367] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:26,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136118774] [2021-06-07 16:37:26,348 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 [2021-06-07 16:37:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 16:37:26,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-07 16:37:26,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 16:37:26,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 16:37:26,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-06-07 16:37:26,617 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-07 16:37:26,624 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 16:37:26,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 16:37:26,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-06-07 16:37:26,644 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-07 16:37:26,650 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 16:37:26,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-07 16:37:26,654 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 16:37:26,658 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 16:37:26,661 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. [2021-06-07 16:37:26,661 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2021-06-07 16:37:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 16:37:26,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136118774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:26,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 16:37:26,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-07 16:37:26,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980833715] [2021-06-07 16:37:26,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-07 16:37:26,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 16:37:26,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-07 16:37:26,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-07 16:37:26,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:26,689 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 16:37:26,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-06-07 16:37:26,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:26,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:26,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 16:37:27,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 16:37:27,014 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 16:37:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 16:37:27,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1220711709, now seen corresponding path program 2 times [2021-06-07 16:37:27,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 16:37:27,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735484417] [2021-06-07 16:37:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 16:37:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 16:37:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 16:37:27,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 16:37:27,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735484417] [2021-06-07 16:37:27,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735484417] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:27,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705604750] [2021-06-07 16:37:27,071 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 [2021-06-07 16:37:27,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-07 16:37:27,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 16:37:27,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-07 16:37:27,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 16:37:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 16:37:27,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705604750] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:27,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 16:37:27,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-07 16:37:27,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805640674] [2021-06-07 16:37:27,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-07 16:37:27,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 16:37:27,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-07 16:37:27,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-07 16:37:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:27,196 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 16:37:27,196 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) [2021-06-07 16:37:27,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:27,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:27,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 16:37:27,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:27,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:27,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 16:37:27,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-07 16:37:27,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 16:37:27,533 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 16:37:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 16:37:27,533 INFO L82 PathProgramCache]: Analyzing trace with hash 894112287, now seen corresponding path program 1 times [2021-06-07 16:37:27,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 16:37:27,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090941529] [2021-06-07 16:37:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 16:37:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 16:37:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 16:37:27,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 16:37:27,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090941529] [2021-06-07 16:37:27,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090941529] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:27,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715612859] [2021-06-07 16:37:27,578 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) [2021-06-07 16:37:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 16:37:27,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-07 16:37:27,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 16:37:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 16:37:27,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715612859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:27,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 16:37:27,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-07 16:37:27,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100269814] [2021-06-07 16:37:27,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-07 16:37:27,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 16:37:27,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-07 16:37:27,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-07 16:37:27,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:27,696 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 16:37:27,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 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) [2021-06-07 16:37:27,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:27,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:27,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 16:37:27,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-07 16:37:27,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 16:37:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-07 16:37:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-07 16:37:27,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 16:37:27,993 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 16:37:27,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 16:37:27,993 INFO L82 PathProgramCache]: Analyzing trace with hash -356579583, now seen corresponding path program 2 times [2021-06-07 16:37:27,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 16:37:27,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333005156] [2021-06-07 16:37:27,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 16:37:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 16:37:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 16:37:28,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 16:37:28,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333005156] [2021-06-07 16:37:28,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333005156] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:28,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256237572] [2021-06-07 16:37:28,321 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 [2021-06-07 16:37:28,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-07 16:37:28,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 16:37:28,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-07 16:37:28,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 16:37:28,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 16:37:28,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 16:37:28,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 16:37:28,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 49 [2021-06-07 16:37:28,620 INFO L550 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-06-07 16:37:28,626 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 16:37:28,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 16:37:28,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 16:37:28,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 16:37:28,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-06-07 16:37:28,638 INFO L550 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-06-07 16:37:28,643 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 16:37:28,655 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 16:37:28,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 49 [2021-06-07 16:37:28,676 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-07 16:37:28,720 INFO L628 ElimStorePlain]: treesize reduction 68, result has 33.3 percent of original size [2021-06-07 16:37:28,724 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. [2021-06-07 16:37:28,724 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:67, output treesize:3 [2021-06-07 16:37:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 16:37:28,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256237572] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:28,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 16:37:28,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-07 16:37:28,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388049287] [2021-06-07 16:37:28,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-07 16:37:28,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 16:37:28,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-07 16:37:28,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-06-07 16:37:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:28,757 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 16:37:28,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 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) [2021-06-07 16:37:28,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:28,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:28,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 16:37:28,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-07 16:37:28,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-07 16:37:28,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:29,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:29,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:29,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 16:37:29,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-07 16:37:29,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-07 16:37:29,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 16:37:29,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-07 16:37:29,793 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 16:37:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 16:37:29,794 INFO L82 PathProgramCache]: Analyzing trace with hash 319376227, now seen corresponding path program 3 times [2021-06-07 16:37:29,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 16:37:29,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691708265] [2021-06-07 16:37:29,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 16:37:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 16:37:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 16:37:29,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 16:37:29,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691708265] [2021-06-07 16:37:29,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691708265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:29,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691014742] [2021-06-07 16:37:29,859 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 [2021-06-07 16:37:29,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-07 16:37:29,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 16:37:29,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-07 16:37:29,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 16:37:30,078 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 16:37:30,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691014742] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:30,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 16:37:30,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-06-07 16:37:30,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083337473] [2021-06-07 16:37:30,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-07 16:37:30,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 16:37:30,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-07 16:37:30,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-07 16:37:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:30,081 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 16:37:30,081 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) [2021-06-07 16:37:30,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:30,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:30,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 16:37:30,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-07 16:37:30,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-07 16:37:30,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 16:37:30,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 16:37:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-07 16:37:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-07 16:37:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 16:37:30,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 16:37:30,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 16:37:30,617 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 16:37:30,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 16:37:30,617 INFO L82 PathProgramCache]: Analyzing trace with hash 254980767, now seen corresponding path program 4 times [2021-06-07 16:37:30,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 16:37:30,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408441140] [2021-06-07 16:37:30,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 16:37:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 16:37:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 16:37:30,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 16:37:30,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408441140] [2021-06-07 16:37:30,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408441140] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:30,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388503439] [2021-06-07 16:37:30,694 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 [2021-06-07 16:37:30,720 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-07 16:37:30,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 16:37:30,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-07 16:37:30,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 16:37:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 16:37:30,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388503439] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:30,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 16:37:30,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-06-07 16:37:30,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50046412] [2021-06-07 16:37:30,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-07 16:37:30,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 16:37:30,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-07 16:37:30,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-06-07 16:37:30,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:30,867 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 16:37:30,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 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) [2021-06-07 16:37:30,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:30,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:30,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-07 16:37:30,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-07 16:37:30,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-07 16:37:30,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-07 16:37:30,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 16:37:30,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 16:37:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 16:37:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 16:37:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 16:37:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-07 16:37:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-07 16:37:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-07 16:37:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 16:37:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-07 16:37:31,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 16:37:31,213 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 16:37:31,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 16:37:31,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1076058751, now seen corresponding path program 5 times [2021-06-07 16:37:31,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 16:37:31,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213177699] [2021-06-07 16:37:31,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 16:37:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 16:37:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 16:37:31,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 16:37:31,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213177699] [2021-06-07 16:37:31,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213177699] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 16:37:31,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627525877] [2021-06-07 16:37:31,656 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 [2021-06-07 16:37:31,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-07 16:37:31,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 16:37:31,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 47 conjunts are in the unsatisfiable core [2021-06-07 16:37:31,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 16:37:45,352 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 47 [2021-06-07 16:37:46,562 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 48 [2021-06-07 16:37:47,829 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 43 [2021-06-07 16:37:49,190 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 41 [2021-06-07 16:37:50,445 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 43 [2021-06-07 16:37:50,508 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 16:37:50,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 97 treesize of output 149 [2021-06-07 16:37:55,358 INFO L550 ElimStorePlain]: Start of recursive call 2: 6 dim-0 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2021-06-07 16:37:55,407 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 16:37:55,450 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 16:37:55,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 77 treesize of output 129 [2021-06-07 16:38:00,485 INFO L550 ElimStorePlain]: Start of recursive call 3: 6 dim-0 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2021-06-07 16:38:00,618 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-06-07 16:38:00,619 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 16:38:00,731 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 16:38:00,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 57 treesize of output 197 [2021-06-07 16:38:01,037 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 160 [2021-06-07 16:38:01,442 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 180 [2021-06-07 16:38:01,838 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 180 [2021-06-07 16:38:02,289 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 197 [2021-06-07 16:38:03,807 WARN L205 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 194 DAG size of output: 217 [2021-06-07 16:38:05,364 WARN L205 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 189 DAG size of output: 204 [2021-06-07 16:38:05,773 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 181 [2021-06-07 16:38:06,361 WARN L205 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 180 [2021-06-07 16:38:07,477 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 329 DAG size of output: 298 [2021-06-07 16:38:09,960 WARN L205 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 385 DAG size of output: 347 [2021-06-07 16:38:16,424 WARN L205 SmtUtils]: Spent 6.46 s on a formula simplification. DAG size of input: 468 DAG size of output: 417 [2021-06-07 16:38:32,400 WARN L205 SmtUtils]: Spent 15.97 s on a formula simplification. DAG size of input: 530 DAG size of output: 475 [2021-06-07 16:38:48,372 WARN L205 SmtUtils]: Spent 15.97 s on a formula simplification. DAG size of input: 530 DAG size of output: 475 [2021-06-07 16:39:05,534 WARN L205 SmtUtils]: Spent 17.16 s on a formula simplification. DAG size of input: 542 DAG size of output: 487 [2021-06-07 16:40:04,986 WARN L205 SmtUtils]: Spent 59.45 s on a formula simplification. DAG size of input: 476 DAG size of output: 570 [2021-06-07 16:40:20,859 WARN L205 SmtUtils]: Spent 15.86 s on a formula simplification. DAG size of input: 468 DAG size of output: 470 [2021-06-07 16:40:21,987 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 172 DAG size of output: 189 [2021-06-07 16:40:23,100 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 167 DAG size of output: 188 [2021-06-07 16:40:24,206 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 162 DAG size of output: 183 [2021-06-07 16:40:44,095 WARN L205 SmtUtils]: Spent 13.59 s on a formula simplification. DAG size of input: 11114 DAG size of output: 10875 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown