/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 23:27:43,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 23:27:43,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 23:27:43,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 23:27:43,264 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Lockstep.epf [2021-06-13 23:27:43,303 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 23:27:43,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 23:27:43,304 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-13 23:27:43,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-13 23:27:43,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 23:27:43,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 23:27:43,306 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 23:27:43,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 23:27:43,307 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 23:27:43,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 23:27:43,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 23:27:43,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 23:27:43,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 23:27:43,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 23:27:43,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 23:27:43,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 23:27:43,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 23:27:43,308 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 23:27:43,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 23:27:43,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 23:27:43,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 23:27:43,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 23:27:43,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 23:27:43,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 23:27:43,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 23:27:43,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 23:27:43,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 23:27:43,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 23:27:43,310 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-13 23:27:43,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 23:27:43,310 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 23:27:43,310 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-13 23:27:43,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-13 23:27:43,311 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-13 23:27:43,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 23:27:43,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 23:27:43,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 23:27:43,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 23:27:43,621 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 23:27:43,622 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 23:27:43,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl [2021-06-13 23:27:43,623 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl' [2021-06-13 23:27:43,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 23:27:43,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 23:27:43,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 23:27:43,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 23:27:43,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 23:27:43,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:27:43" (1/1) ... [2021-06-13 23:27:43,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:27:43" (1/1) ... [2021-06-13 23:27:43,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 23:27:43,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 23:27:43,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 23:27:43,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 23:27:43,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:27:43" (1/1) ... [2021-06-13 23:27:43,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:27:43" (1/1) ... [2021-06-13 23:27:43,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:27:43" (1/1) ... [2021-06-13 23:27:43,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:27:43" (1/1) ... [2021-06-13 23:27:43,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:27:43" (1/1) ... [2021-06-13 23:27:43,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:27:43" (1/1) ... [2021-06-13 23:27:43,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:27:43" (1/1) ... [2021-06-13 23:27:43,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 23:27:43,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 23:27:43,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 23:27:43,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 23:27:43,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:27:43" (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 [2021-06-13 23:27:43,754 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 23:27:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 23:27:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 23:27:43,755 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 23:27:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 23:27:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 23:27:43,755 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 23:27:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 23:27:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 23:27:43,755 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-13 23:27:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-13 23:27:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-13 23:27:43,756 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 23:27:43,967 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 23:27:43,968 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 23:27:43,969 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 11:27:43 BoogieIcfgContainer [2021-06-13 23:27:43,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 23:27:43,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 23:27:43,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 23:27:43,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 23:27:43,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:27:43" (1/2) ... [2021-06-13 23:27:43,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1386a471 and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 11:27:43, skipping insertion in model container [2021-06-13 23:27:43,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 11:27:43" (2/2) ... [2021-06-13 23:27:43,990 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-06-13 23:27:43,995 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-13 23:27:44,005 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 23:27:44,005 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 23:27:44,006 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 23:27:44,076 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-13 23:27:44,111 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 [2021-06-13 23:27:44,167 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 23:27:44,167 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 23:27:44,168 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 23:27:44,168 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 23:27:44,168 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 23:27:44,168 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 23:27:44,168 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 23:27:44,168 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 23:27:44,286 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:27:44,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:27:44,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1665803369, now seen corresponding path program 1 times [2021-06-13 23:27:44,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:27:44,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948324469] [2021-06-13 23:27:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:27:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:27:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-13 23:27:44,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:27:44,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948324469] [2021-06-13 23:27:44,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948324469] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:27:44,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631547286] [2021-06-13 23:27:44,527 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 [2021-06-13 23:27:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:27:44,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-13 23:27:44,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:27:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-13 23:27:44,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631547286] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:27:44,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:27:44,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-13 23:27:44,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175192787] [2021-06-13 23:27:44,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 23:27:44,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:27:44,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 23:27:44,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-13 23:27:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:27:44,786 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:27:44,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) 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) [2021-06-13 23:27:44,787 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:27:45,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 23:27:45,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-13 23:27:45,252 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:27:45,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:27:45,252 INFO L82 PathProgramCache]: Analyzing trace with hash -130638363, now seen corresponding path program 2 times [2021-06-13 23:27:45,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:27:45,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318727699] [2021-06-13 23:27:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:27:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:27:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-13 23:27:45,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:27:45,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318727699] [2021-06-13 23:27:45,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318727699] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:27:45,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896417796] [2021-06-13 23:27:45,337 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 [2021-06-13 23:27:45,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-13 23:27:45,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 23:27:45,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-13 23:27:45,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:27:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-13 23:27:45,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896417796] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:27:45,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:27:45,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-13 23:27:45,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110481567] [2021-06-13 23:27:45,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-13 23:27:45,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:27:45,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-13 23:27:45,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-13 23:27:45,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:27:45,592 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:27:45,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 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) [2021-06-13 23:27:45,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-13 23:27:45,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:27:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 23:27:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:27:46,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:27:46,081 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:27:46,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:27:46,082 INFO L82 PathProgramCache]: Analyzing trace with hash -15900973, now seen corresponding path program 3 times [2021-06-13 23:27:46,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:27:46,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440533280] [2021-06-13 23:27:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:27:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:27:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-13 23:27:46,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:27:46,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440533280] [2021-06-13 23:27:46,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440533280] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:27:46,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633054899] [2021-06-13 23:27:46,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:27:46,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-13 23:27:46,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 23:27:46,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-13 23:27:46,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:27:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-13 23:27:46,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633054899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:27:46,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:27:46,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-13 23:27:46,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753122879] [2021-06-13 23:27:46,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-13 23:27:46,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:27:46,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-13 23:27:46,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-13 23:27:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:27:46,459 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:27:46,459 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 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) [2021-06-13 23:27:46,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-13 23:27:46,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:27:46,462 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:27:46,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-13 23:27:46,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:27:46,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-13 23:27:47,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:27:47,205 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:27:47,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:27:47,205 INFO L82 PathProgramCache]: Analyzing trace with hash -572343591, now seen corresponding path program 4 times [2021-06-13 23:27:47,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:27:47,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251249021] [2021-06-13 23:27:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:27:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:27:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-13 23:27:47,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:27:47,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251249021] [2021-06-13 23:27:47,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251249021] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:27:47,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088927047] [2021-06-13 23:27:47,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:27:47,378 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-13 23:27:47,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 23:27:47,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-13 23:27:47,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:27:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 15 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-13 23:27:47,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088927047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:27:47,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:27:47,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21 [2021-06-13 23:27:47,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968476553] [2021-06-13 23:27:47,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-13 23:27:47,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:27:47,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-13 23:27:47,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-06-13 23:27:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:27:47,637 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:27:47,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 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) [2021-06-13 23:27:47,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-13 23:27:47,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:27:47,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-13 23:27:47,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:27:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-13 23:27:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:27:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-13 23:27:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-13 23:27:48,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:27:48,253 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:27:48,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:27:48,253 INFO L82 PathProgramCache]: Analyzing trace with hash 29660917, now seen corresponding path program 5 times [2021-06-13 23:27:48,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:27:48,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230047552] [2021-06-13 23:27:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:27:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:27:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-13 23:27:48,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:27:48,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230047552] [2021-06-13 23:27:48,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230047552] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:27:48,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224971710] [2021-06-13 23:27:48,391 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:27:48,453 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-13 23:27:48,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 23:27:48,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-13 23:27:48,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:27:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 20 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-13 23:27:48,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224971710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:27:48,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:27:48,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 21 [2021-06-13 23:27:48,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997039812] [2021-06-13 23:27:48,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-13 23:27:48,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:27:48,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-13 23:27:48,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-06-13 23:27:48,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:27:48,676 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:27:48,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 21 states have internal predecessors, (72), 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) [2021-06-13 23:27:48,676 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-13 23:27:48,676 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:27:48,676 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-06-13 23:27:48,676 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-13 23:27:48,676 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:27:49,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-13 23:27:49,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-13 23:27:49,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-13 23:27:49,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-13 23:27:49,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-13 23:27:49,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:27:49,665 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:27:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:27:49,665 INFO L82 PathProgramCache]: Analyzing trace with hash -769494133, now seen corresponding path program 6 times [2021-06-13 23:27:49,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:27:49,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988767823] [2021-06-13 23:27:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:27:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:27:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 12 proven. 172 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-13 23:27:50,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:27:50,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988767823] [2021-06-13 23:27:50,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988767823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:27:50,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221690350] [2021-06-13 23:27:50,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:27:51,004 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-13 23:27:51,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 23:27:51,006 WARN L261 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 102 conjunts are in the unsatisfiable core [2021-06-13 23:27:51,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:27:53,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 23:27:53,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 23:27:53,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 23:27:53,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 23:27:53,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 55 disjoint index pairs (out of 105 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 167 [2021-06-13 23:27:53,114 INFO L550 ElimStorePlain]: Start of recursive call 2: 11 dim-0 vars, End of recursive call: 11 dim-0 vars, and 1 xjuncts. [2021-06-13 23:27:53,137 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 23:27:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 23:27:53,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 23:27:53,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 23:27:53,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:27:53,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 23:27:53,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 55 disjoint index pairs (out of 105 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 117 [2021-06-13 23:27:53,186 INFO L550 ElimStorePlain]: Start of recursive call 3: 11 dim-0 vars, End of recursive call: 11 dim-0 vars, and 1 xjuncts. [2021-06-13 23:27:53,207 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 23:27:53,685 WARN L205 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2021-06-13 23:27:53,685 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 23:27:53,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 117 treesize of output 689 [2021-06-13 23:30:55,192 WARN L205 SmtUtils]: Spent 3.02 m on a formula simplification. DAG size of input: 479 DAG size of output: 443 [2021-06-13 23:37:58,278 WARN L205 SmtUtils]: Spent 7.05 m on a formula simplification. DAG size of input: 532 DAG size of output: 479 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown