/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 14:03:23,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 14:03:23,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 14:03:23,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-10 14:03:23,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-10 14:03:23,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-10 14:03:23,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-10 14:03:23,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-10 14:03:23,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-10 14:03:23,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-10 14:03:23,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-10 14:03:23,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-10 14:03:23,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-10 14:03:23,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-10 14:03:23,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-10 14:03:23,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-10 14:03:23,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-10 14:03:23,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-10 14:03:23,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-10 14:03:23,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-10 14:03:23,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-10 14:03:23,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-10 14:03:23,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-10 14:03:23,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-10 14:03:23,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-10 14:03:23,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-10 14:03:23,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-10 14:03:23,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-10 14:03:23,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-10 14:03:23,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-10 14:03:23,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-10 14:03:23,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-10 14:03:23,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-10 14:03:23,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-10 14:03:23,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-10 14:03:23,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-10 14:03:23,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-10 14:03:23,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-10 14:03:23,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 14:03:23,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 14:03:23,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 14:03:23,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random42.epf [2021-07-10 14:03:23,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 14:03:23,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 14:03:23,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 14:03:23,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 14:03:23,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 14:03:23,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 14:03:23,890 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 14:03:23,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 14:03:23,890 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 14:03:23,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 14:03:23,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 14:03:23,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 14:03:23,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 14:03:23,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 14:03:23,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 14:03:23,892 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 14:03:23,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 14:03:23,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 14:03:23,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 14:03:23,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 14:03:23,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 14:03:23,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 14:03:23,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 14:03:23,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 14:03:23,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 14:03:23,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 14:03:23,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 14:03:23,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 14:03:23,894 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-07-10 14:03:23,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 14:03:23,895 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 14:03:23,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 14:03:23,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 14:03:23,895 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-10 14:03:23,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-10 14:03:23,896 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 14:03:24,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 14:03:24,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 14:03:24,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 14:03:24,251 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 14:03:24,252 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 14:03:24,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl [2021-07-10 14:03:24,253 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl' [2021-07-10 14:03:24,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 14:03:24,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 14:03:24,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 14:03:24,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 14:03:24,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 14:03:24,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:03:24" (1/1) ... [2021-07-10 14:03:24,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:03:24" (1/1) ... [2021-07-10 14:03:24,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 14:03:24,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 14:03:24,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 14:03:24,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 14:03:24,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:03:24" (1/1) ... [2021-07-10 14:03:24,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:03:24" (1/1) ... [2021-07-10 14:03:24,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:03:24" (1/1) ... [2021-07-10 14:03:24,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:03:24" (1/1) ... [2021-07-10 14:03:24,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:03:24" (1/1) ... [2021-07-10 14:03:24,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:03:24" (1/1) ... [2021-07-10 14:03:24,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:03:24" (1/1) ... [2021-07-10 14:03:24,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 14:03:24,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 14:03:24,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 14:03:24,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 14:03:24,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:03:24" (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 [2021-07-10 14:03:24,389 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 14:03:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 14:03:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 14:03:24,389 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 14:03:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 14:03:24,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 14:03:24,393 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 14:03:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 14:03:24,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 14:03:24,393 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 14:03:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 14:03:24,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 14:03:24,395 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 14:03:24,570 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 14:03:24,570 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 14:03:24,572 INFO L202 PluginConnector]: Adding new model misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:03:24 BoogieIcfgContainer [2021-07-10 14:03:24,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 14:03:24,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 14:03:24,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 14:03:24,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 14:03:24,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:03:24" (1/2) ... [2021-07-10 14:03:24,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a0a3c7 and model type misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 02:03:24, skipping insertion in model container [2021-07-10 14:03:24,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:03:24" (2/2) ... [2021-07-10 14:03:24,579 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-5.wvr.bpl [2021-07-10 14:03:24,584 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 14:03:24,584 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 14:03:24,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 14:03:24,594 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 14:03:24,646 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 14:03:24,686 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 [2021-07-10 14:03:24,735 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 14:03:24,735 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 14:03:24,735 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 14:03:24,735 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 14:03:24,736 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 14:03:24,736 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 14:03:24,736 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 14:03:24,736 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 14:03:24,884 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:03:24,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:03:24,889 INFO L82 PathProgramCache]: Analyzing trace with hash 204719306, now seen corresponding path program 1 times [2021-07-10 14:03:24,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:03:24,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161125845] [2021-07-10 14:03:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:03:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:03:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 14:03:25,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:03:25,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161125845] [2021-07-10 14:03:25,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161125845] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 14:03:25,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 14:03:25,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-10 14:03:25,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196692606] [2021-07-10 14:03:25,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-10 14:03:25,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:03:25,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-10 14:03:25,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-10 14:03:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:25,036 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:03:25,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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) [2021-07-10 14:03:25,038 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:25,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 14:03:25,119 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:03:25,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:03:25,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1692098842, now seen corresponding path program 1 times [2021-07-10 14:03:25,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:03:25,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777341170] [2021-07-10 14:03:25,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:03:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:03:25,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:03:25,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:03:25,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777341170] [2021-07-10 14:03:25,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777341170] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:03:25,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268461540] [2021-07-10 14:03:25,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:03:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:03:25,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-07-10 14:03:25,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:03:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:03:25,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268461540] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:03:25,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 14:03:25,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-07-10 14:03:25,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991743032] [2021-07-10 14:03:25,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 14:03:25,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:03:25,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 14:03:25,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-10 14:03:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:25,306 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:03:25,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 14:03:25,306 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:25,306 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:25,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:03:25,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:03:25,629 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:03:25,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:03:25,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2134997982, now seen corresponding path program 2 times [2021-07-10 14:03:25,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:03:25,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307096939] [2021-07-10 14:03:25,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:03:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:03:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:03:25,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:03:25,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307096939] [2021-07-10 14:03:25,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307096939] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:03:25,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149995880] [2021-07-10 14:03:25,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:03:25,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 14:03:25,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 14:03:25,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-10 14:03:25,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:03:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:03:25,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149995880] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:03:25,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 14:03:25,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-07-10 14:03:25,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798879151] [2021-07-10 14:03:25,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-10 14:03:25,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:03:25,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-10 14:03:25,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-10 14:03:25,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:25,782 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:03:25,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 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) [2021-07-10 14:03:25,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:25,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:03:25,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:03:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:03:26,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:03:26,113 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:03:26,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:03:26,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1441743766, now seen corresponding path program 3 times [2021-07-10 14:03:26,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:03:26,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093113700] [2021-07-10 14:03:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:03:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:03:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:03:26,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:03:26,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093113700] [2021-07-10 14:03:26,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093113700] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:03:26,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593846851] [2021-07-10 14:03:26,194 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 [2021-07-10 14:03:26,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-10 14:03:26,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 14:03:26,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 14:03:26,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:03:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:03:26,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593846851] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:03:26,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 14:03:26,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-07-10 14:03:26,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692653181] [2021-07-10 14:03:26,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-10 14:03:26,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:03:26,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-10 14:03:26,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-10 14:03:26,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:26,364 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:03:26,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 14:03:26,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:26,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:03:26,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:03:26,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:03:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:03:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 14:03:26,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:03:26,689 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:03:26,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:03:26,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1884642906, now seen corresponding path program 4 times [2021-07-10 14:03:26,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:03:26,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953328921] [2021-07-10 14:03:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:03:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:03:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:03:26,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:03:26,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953328921] [2021-07-10 14:03:26,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953328921] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:03:26,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810222186] [2021-07-10 14:03:26,805 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 [2021-07-10 14:03:26,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 14:03:26,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 14:03:26,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-07-10 14:03:26,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:03:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:03:27,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810222186] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:03:27,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 14:03:27,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-07-10 14:03:27,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315613634] [2021-07-10 14:03:27,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 14:03:27,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:03:27,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 14:03:27,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-07-10 14:03:27,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:27,052 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:03:27,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 14:03:27,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:27,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:03:27,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:03:27,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 14:03:27,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:03:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:03:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 14:03:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 14:03:27,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-07-10 14:03:27,401 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:03:27,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:03:27,402 INFO L82 PathProgramCache]: Analyzing trace with hash -48920558, now seen corresponding path program 5 times [2021-07-10 14:03:27,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:03:27,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954685678] [2021-07-10 14:03:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:03:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:03:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:03:27,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:03:27,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954685678] [2021-07-10 14:03:27,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954685678] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:03:27,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587637396] [2021-07-10 14:03:27,560 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 [2021-07-10 14:03:27,592 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-07-10 14:03:27,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 14:03:27,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-10 14:03:27,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:03:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:03:27,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587637396] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:03:27,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 14:03:27,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-07-10 14:03:27,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474356222] [2021-07-10 14:03:27,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-10 14:03:27,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:03:27,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-10 14:03:27,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-07-10 14:03:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:27,822 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:03:27,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 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) [2021-07-10 14:03:27,822 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:27,822 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:03:27,822 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:03:27,822 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 14:03:27,822 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 14:03:27,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:03:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:03:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 14:03:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 14:03:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 14:03:28,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:03:28,287 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:03:28,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:03:28,287 INFO L82 PathProgramCache]: Analyzing trace with hash -2135733934, now seen corresponding path program 6 times [2021-07-10 14:03:28,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:03:28,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343348822] [2021-07-10 14:03:28,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:03:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:03:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:03:28,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:03:28,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343348822] [2021-07-10 14:03:28,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343348822] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:03:28,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899640568] [2021-07-10 14:03:28,728 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 [2021-07-10 14:03:28,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-07-10 14:03:28,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 14:03:28,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-10 14:03:28,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:03:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:03:29,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899640568] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:03:29,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 14:03:29,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-07-10 14:03:29,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485976662] [2021-07-10 14:03:29,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-10 14:03:29,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:03:29,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-10 14:03:29,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-07-10 14:03:29,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:29,166 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:03:29,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 18 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) [2021-07-10 14:03:29,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:29,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:03:29,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:03:29,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 14:03:29,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-10 14:03:29,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 14:03:29,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:03:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 14:03:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:03:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:03:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 14:03:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 14:03:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 14:03:29,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 14:03:29,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:03:29,801 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:03:29,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:03:29,801 INFO L82 PathProgramCache]: Analyzing trace with hash -110321274, now seen corresponding path program 7 times [2021-07-10 14:03:29,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:03:29,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040434326] [2021-07-10 14:03:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:03:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:03:37,583 WARN L205 SmtUtils]: Spent 7.25 s on a formula simplification. DAG size of input: 92 DAG size of output: 20 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown