/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-Persistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 09:01:39,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 09:01:39,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 09:01:39,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-14 09:01:39,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-14 09:01:39,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-14 09:01:39,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-14 09:01:39,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-14 09:01:39,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-14 09:01:39,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-14 09:01:39,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-14 09:01:39,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-14 09:01:39,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 09:01:39,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 09:01:39,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 09:01:39,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 09:01:39,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 09:01:39,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 09:01:39,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 09:01:39,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 09:01:39,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 09:01:39,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 09:01:39,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 09:01:39,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 09:01:39,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-14 09:01:39,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-14 09:01:39,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-14 09:01:39,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-14 09:01:39,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-14 09:01:39,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-14 09:01:39,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-14 09:01:39,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-14 09:01:39,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-14 09:01:39,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-14 09:01:39,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-14 09:01:39,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-14 09:01:39,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-14 09:01:39,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-14 09:01:39,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 09:01:39,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 09:01:39,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 09:01:39,456 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-Persistent-NoLbe.epf [2021-07-14 09:01:39,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 09:01:39,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 09:01:39,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 09:01:39,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 09:01:39,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 09:01:39,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 09:01:39,494 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 09:01:39,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 09:01:39,494 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 09:01:39,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 09:01:39,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 09:01:39,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 09:01:39,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 09:01:39,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 09:01:39,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 09:01:39,495 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 09:01:39,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 09:01:39,496 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 09:01:39,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 09:01:39,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 09:01:39,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 09:01:39,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 09:01:39,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 09:01:39,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 09:01:39,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 09:01:39,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 09:01:39,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 09:01:39,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 09:01:39,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 09:01:39,497 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 09:01:39,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 09:01:39,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 09:01:39,498 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-07-14 09:01:39,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 09:01:39,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 09:01:39,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 09:01:39,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 09:01:39,798 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 09:01:39,804 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 09:01:39,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl [2021-07-14 09:01:39,805 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl' [2021-07-14 09:01:39,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 09:01:39,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 09:01:39,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 09:01:39,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 09:01:39,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 09:01:39,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:01:39" (1/1) ... [2021-07-14 09:01:39,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:01:39" (1/1) ... [2021-07-14 09:01:39,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 09:01:39,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 09:01:39,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 09:01:39,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 09:01:39,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:01:39" (1/1) ... [2021-07-14 09:01:39,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:01:39" (1/1) ... [2021-07-14 09:01:39,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:01:39" (1/1) ... [2021-07-14 09:01:39,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:01:39" (1/1) ... [2021-07-14 09:01:39,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:01:39" (1/1) ... [2021-07-14 09:01:39,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:01:39" (1/1) ... [2021-07-14 09:01:39,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:01:39" (1/1) ... [2021-07-14 09:01:39,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 09:01:39,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 09:01:39,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 09:01:39,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 09:01:39,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:01:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 09:01:39,959 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 09:01:39,960 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 09:01:39,960 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 09:01:39,960 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 09:01:39,960 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 09:01:39,960 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 09:01:39,960 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 09:01:39,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 09:01:39,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 09:01:39,961 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 09:01:39,961 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 09:01:39,961 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 09:01:39,962 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 09:01:40,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 09:01:40,202 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 09:01:40,204 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 09:01:40 BoogieIcfgContainer [2021-07-14 09:01:40,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 09:01:40,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 09:01:40,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 09:01:40,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 09:01:40,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:01:39" (1/2) ... [2021-07-14 09:01:40,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21deb03d and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 09:01:40, skipping insertion in model container [2021-07-14 09:01:40,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 09:01:40" (2/2) ... [2021-07-14 09:01:40,209 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl [2021-07-14 09:01:40,221 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 09:01:40,222 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 09:01:40,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 09:01:40,222 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 09:01:40,260 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 09:01:40,275 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 09:01:40,319 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 09:01:40,320 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 09:01:40,320 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 09:01:40,320 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 09:01:40,320 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 09:01:40,320 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 09:01:40,320 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 09:01:40,320 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 09:01:40,496 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:01:40,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:01:40,500 INFO L82 PathProgramCache]: Analyzing trace with hash -173970191, now seen corresponding path program 1 times [2021-07-14 09:01:40,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:01:40,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521576726] [2021-07-14 09:01:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:01:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:01:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 09:01:40,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:01:40,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521576726] [2021-07-14 09:01:40,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521576726] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 09:01:40,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 09:01:40,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 09:01:40,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161192960] [2021-07-14 09:01:40,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 09:01:40,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:01:40,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 09:01:40,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 09:01:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:40,636 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:01:40,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:01:40,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:40,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 09:01:40,687 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:01:40,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:01:40,690 INFO L82 PathProgramCache]: Analyzing trace with hash -256226487, now seen corresponding path program 2 times [2021-07-14 09:01:40,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:01:40,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664859968] [2021-07-14 09:01:40,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:01:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:01:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 09:01:40,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:01:40,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664859968] [2021-07-14 09:01:40,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664859968] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 09:01:40,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 09:01:40,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 09:01:40,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457149237] [2021-07-14 09:01:40,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 09:01:40,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:01:40,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 09:01:40,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 09:01:40,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:40,747 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:01:40,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:01:40,748 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:40,749 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:40,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:40,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 09:01:40,799 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:01:40,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:01:40,799 INFO L82 PathProgramCache]: Analyzing trace with hash -2107613593, now seen corresponding path program 3 times [2021-07-14 09:01:40,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:01:40,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625617166] [2021-07-14 09:01:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:01:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:01:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 09:01:40,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:01:40,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625617166] [2021-07-14 09:01:40,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625617166] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:01:40,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233700293] [2021-07-14 09:01:40,966 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:01:41,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-14 09:01:41,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 09:01:41,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-14 09:01:41,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:01:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 09:01:41,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233700293] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:01:41,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:01:41,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-07-14 09:01:41,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384524127] [2021-07-14 09:01:41,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 09:01:41,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:01:41,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 09:01:41,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-07-14 09:01:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:41,252 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:01:41,252 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) [2021-07-14 09:01:41,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:41,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:41,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:01:41,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:01:41,654 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:01:41,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:01:41,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1278428005, now seen corresponding path program 4 times [2021-07-14 09:01:41,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:01:41,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728853065] [2021-07-14 09:01:41,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:01:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:01:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-14 09:01:41,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:01:41,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728853065] [2021-07-14 09:01:41,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728853065] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:01:41,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986730715] [2021-07-14 09:01:41,803 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:01:41,847 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 09:01:41,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 09:01:41,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 09:01:41,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:01:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-14 09:01:41,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986730715] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:01:41,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:01:41,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-07-14 09:01:41,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439448506] [2021-07-14 09:01:41,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-14 09:01:41,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:01:41,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-14 09:01:41,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-07-14 09:01:41,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:41,997 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:01:41,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:01:41,997 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:41,997 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:41,997 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:01:41,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:01:42,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:01:42,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:01:42,353 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:01:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:01:42,353 INFO L82 PathProgramCache]: Analyzing trace with hash 139900759, now seen corresponding path program 5 times [2021-07-14 09:01:42,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:01:42,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114711310] [2021-07-14 09:01:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:01:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:01:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 43 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 09:01:42,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:01:42,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114711310] [2021-07-14 09:01:42,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114711310] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:01:42,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911986432] [2021-07-14 09:01:42,525 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:01:42,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-07-14 09:01:42,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 09:01:42,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-14 09:01:42,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:01:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-14 09:01:42,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911986432] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:01:42,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:01:42,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 19 [2021-07-14 09:01:42,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761452640] [2021-07-14 09:01:42,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-14 09:01:42,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:01:42,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-14 09:01:42,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-07-14 09:01:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:42,789 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:01:42,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:01:42,789 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:42,789 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:42,789 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:01:42,789 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:01:42,789 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:01:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:01:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 09:01:43,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:01:43,470 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:01:43,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:01:43,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1126269443, now seen corresponding path program 6 times [2021-07-14 09:01:43,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:01:43,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127916203] [2021-07-14 09:01:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:01:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:01:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-07-14 09:01:43,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:01:43,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127916203] [2021-07-14 09:01:43,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127916203] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 09:01:43,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 09:01:43,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 09:01:43,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236435372] [2021-07-14 09:01:43,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 09:01:43,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:01:43,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 09:01:43,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-14 09:01:43,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:43,502 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:01:43,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:01:43,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:43,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:43,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:01:43,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:01:43,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 09:01:43,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:01:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:01:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 09:01:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:43,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-14 09:01:43,527 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:01:43,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:01:43,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1762998683, now seen corresponding path program 7 times [2021-07-14 09:01:43,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:01:43,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263936225] [2021-07-14 09:01:43,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:01:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:01:44,462 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2021-07-14 09:01:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 2 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 09:01:44,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:01:44,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263936225] [2021-07-14 09:01:44,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263936225] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:01:44,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486634450] [2021-07-14 09:01:44,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:01:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:01:44,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 28 conjunts are in the unsatisfiable core [2021-07-14 09:01:44,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:01:46,090 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2021-07-14 09:01:46,505 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-07-14 09:01:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 09:01:47,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486634450] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:01:47,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:01:47,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 40 [2021-07-14 09:01:47,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290381232] [2021-07-14 09:01:47,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-07-14 09:01:47,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:01:47,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-07-14 09:01:47,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1470, Unknown=0, NotChecked=0, Total=1640 [2021-07-14 09:01:47,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:47,278 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:01:47,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 40 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:01:47,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:47,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:47,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:01:47,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:01:47,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 09:01:47,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:47,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:01:47,886 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2021-07-14 09:01:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:01:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:01:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:01:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 09:01:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:01:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-14 09:01:48,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-07-14 09:01:48,317 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:01:48,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:01:48,317 INFO L82 PathProgramCache]: Analyzing trace with hash 2136452505, now seen corresponding path program 8 times [2021-07-14 09:01:48,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:01:48,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650770110] [2021-07-14 09:01:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:01:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:01:49,344 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 45 [2021-07-14 09:01:49,589 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 44 [2021-07-14 09:01:49,856 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 42 [2021-07-14 09:01:50,205 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 38 [2021-07-14 09:01:51,389 WARN L205 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 126 DAG size of output: 49 [2021-07-14 09:01:53,247 WARN L205 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 127 DAG size of output: 57 [2021-07-14 09:01:53,848 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 36 [2021-07-14 09:01:54,384 WARN L205 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 63 [2021-07-14 09:01:55,755 WARN L205 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 168 DAG size of output: 55 [2021-07-14 09:01:59,519 WARN L205 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 131 DAG size of output: 125 [2021-07-14 09:01:59,748 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 27 [2021-07-14 09:02:01,459 WARN L205 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 134 DAG size of output: 149 [2021-07-14 09:02:04,140 WARN L205 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 124 DAG size of output: 158 [2021-07-14 09:02:06,337 WARN L205 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 127 DAG size of output: 109 [2021-07-14 09:02:06,513 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 25 [2021-07-14 09:02:09,252 WARN L205 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 130 DAG size of output: 100 [2021-07-14 09:02:09,447 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 15 [2021-07-14 09:02:12,064 WARN L205 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 130 DAG size of output: 100 [2021-07-14 09:02:12,257 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 17 [2021-07-14 09:02:16,944 WARN L205 SmtUtils]: Spent 4.68 s on a formula simplification. DAG size of input: 140 DAG size of output: 76 [2021-07-14 09:02:23,168 WARN L205 SmtUtils]: Spent 6.19 s on a formula simplification. DAG size of input: 139 DAG size of output: 77 [2021-07-14 09:02:27,931 WARN L205 SmtUtils]: Spent 4.64 s on a formula simplification. DAG size of input: 141 DAG size of output: 79 [2021-07-14 09:02:28,659 WARN L205 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-07-14 09:02:29,465 WARN L205 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2021-07-14 09:02:30,305 WARN L205 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2021-07-14 09:02:30,723 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2021-07-14 09:02:31,047 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 47 [2021-07-14 09:02:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 4 proven. 277 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-14 09:02:31,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:02:31,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650770110] [2021-07-14 09:02:31,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650770110] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:02:31,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886344152] [2021-07-14 09:02:31,297 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:02:31,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 09:02:31,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 09:02:31,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 47 conjunts are in the unsatisfiable core [2021-07-14 09:02:31,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:02:32,852 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2021-07-14 09:02:33,201 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2021-07-14 09:02:33,474 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-07-14 09:02:33,729 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-07-14 09:02:34,307 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 119 [2021-07-14 09:02:35,263 WARN L205 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 133 [2021-07-14 09:02:36,363 WARN L205 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 146 [2021-07-14 09:02:36,812 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-07-14 09:02:37,689 WARN L205 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 156 [2021-07-14 09:02:38,166 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-07-14 09:02:38,688 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-07-14 09:02:39,436 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2021-07-14 09:02:41,374 WARN L205 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 251 DAG size of output: 157 [2021-07-14 09:02:41,959 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-07-14 09:02:42,476 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-07-14 09:02:43,454 WARN L205 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 150 [2021-07-14 09:02:44,216 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-07-14 09:02:44,831 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-07-14 09:02:45,884 WARN L205 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 149 [2021-07-14 09:02:46,765 WARN L205 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 125 [2021-07-14 09:02:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 09:02:47,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886344152] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:02:47,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:02:47,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 37] total 64 [2021-07-14 09:02:47,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296437736] [2021-07-14 09:02:47,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-07-14 09:02:47,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:02:47,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-07-14 09:02:47,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=3823, Unknown=0, NotChecked=0, Total=4160 [2021-07-14 09:02:47,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:02:47,040 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:02:47,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.1846153846153844) internal successors, (142), 64 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:02:47,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:02:47,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:02:47,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:02:47,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:02:47,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 09:02:47,041 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:02:47,041 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-07-14 09:02:47,041 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:02:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:02:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:02:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:02:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:02:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 09:02:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:02:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-14 09:02:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-14 09:02:49,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-07-14 09:02:49,386 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:02:49,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:02:49,386 INFO L82 PathProgramCache]: Analyzing trace with hash -655788203, now seen corresponding path program 9 times [2021-07-14 09:02:49,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:02:49,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588168422] [2021-07-14 09:02:49,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:02:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:02:50,697 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 79 [2021-07-14 09:02:50,938 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 80 [2021-07-14 09:02:51,323 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-07-14 09:02:51,972 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 96 [2021-07-14 09:02:52,236 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 80 [2021-07-14 09:02:52,507 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 27 [2021-07-14 09:02:52,740 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 30 [2021-07-14 09:02:52,958 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 30 [2021-07-14 09:02:53,218 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 34 [2021-07-14 09:02:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 4 proven. 372 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-07-14 09:02:54,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:02:54,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588168422] [2021-07-14 09:02:54,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588168422] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:02:54,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670496545] [2021-07-14 09:02:54,364 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:02:54,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-07-14 09:02:54,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 09:02:54,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 52 conjunts are in the unsatisfiable core [2021-07-14 09:02:54,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:02:55,971 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-07-14 09:02:56,330 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 88 [2021-07-14 09:02:56,814 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-07-14 09:02:57,068 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-07-14 09:02:57,546 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 116 [2021-07-14 09:02:58,182 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 136 [2021-07-14 09:02:58,621 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-07-14 09:02:59,017 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-07-14 09:02:59,514 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-07-14 09:02:59,945 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-07-14 09:03:00,377 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-07-14 09:03:00,994 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2021-07-14 09:03:02,180 WARN L205 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 182 [2021-07-14 09:03:03,503 WARN L205 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 197 [2021-07-14 09:03:04,829 WARN L205 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 190 [2021-07-14 09:03:05,625 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2021-07-14 09:03:06,823 WARN L205 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 180 [2021-07-14 09:03:08,006 WARN L205 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 177 [2021-07-14 09:03:09,953 WARN L205 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2021-07-14 09:03:11,006 WARN L205 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2021-07-14 09:03:11,977 WARN L205 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-07-14 09:03:13,978 WARN L205 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 287 DAG size of output: 226 [2021-07-14 09:03:15,299 WARN L205 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 157 [2021-07-14 09:03:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 09:03:15,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670496545] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:03:15,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:03:15,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 42] total 70 [2021-07-14 09:03:15,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241040894] [2021-07-14 09:03:15,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-07-14 09:03:15,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:03:15,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-07-14 09:03:15,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=4642, Unknown=0, NotChecked=0, Total=4970 [2021-07-14 09:03:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:03:15,718 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:03:15,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 70 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:03:15,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:03:15,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:03:15,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:03:15,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:03:15,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 09:03:15,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:03:15,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-07-14 09:03:15,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-07-14 09:03:15,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:03:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:03:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:03:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 09:03:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:03:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 09:03:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 09:03:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-14 09:03:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-14 09:03:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-14 09:03:21,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:03:21,146 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:03:21,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:03:21,146 INFO L82 PathProgramCache]: Analyzing trace with hash 367561825, now seen corresponding path program 10 times [2021-07-14 09:03:21,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:03:21,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955432249] [2021-07-14 09:03:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:03:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:03:23,308 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 25 [2021-07-14 09:03:23,439 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2021-07-14 09:03:23,615 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2021-07-14 09:03:23,787 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2021-07-14 09:03:23,963 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2021-07-14 09:03:30,362 WARN L205 SmtUtils]: Spent 6.32 s on a formula simplification. DAG size of input: 91 DAG size of output: 52 [2021-07-14 09:16:04,878 WARN L205 SmtUtils]: Spent 12.57 m on a formula simplification. DAG size of input: 207 DAG size of output: 88 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown