/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/bench/exp3x3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-17 13:06:19,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-17 13:06:19,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-17 13:06:19,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-17 13:06:19,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-17 13:06:19,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-17 13:06:19,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-17 13:06:19,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-17 13:06:19,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-17 13:06:19,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-17 13:06:19,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-17 13:06:19,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-17 13:06:19,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-17 13:06:19,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-17 13:06:19,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-17 13:06:19,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-17 13:06:19,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-17 13:06:19,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-17 13:06:19,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-17 13:06:19,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-17 13:06:19,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-17 13:06:19,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-17 13:06:19,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-17 13:06:19,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-17 13:06:19,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-17 13:06:19,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-17 13:06:19,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-17 13:06:19,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-17 13:06:19,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-17 13:06:19,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-17 13:06:19,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-17 13:06:19,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-17 13:06:19,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-17 13:06:19,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-17 13:06:19,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-17 13:06:19,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-17 13:06:19,702 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 [2021-06-17 13:06:19,717 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-17 13:06:19,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-17 13:06:19,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-17 13:06:19,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-17 13:06:19,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-17 13:06:19,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-17 13:06:19,718 INFO L138 SettingsManager]: * Use SBE=true [2021-06-17 13:06:19,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-17 13:06:19,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-17 13:06:19,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-17 13:06:19,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-17 13:06:19,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-17 13:06:19,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-17 13:06:19,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-17 13:06:19,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-17 13:06:19,719 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-17 13:06:19,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-17 13:06:19,719 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-17 13:06:19,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-17 13:06:19,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-17 13:06:19,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-17 13:06:19,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-17 13:06:19,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-17 13:06:19,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 13:06:19,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-17 13:06:19,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-17 13:06:19,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-17 13:06:19,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-17 13:06:19,721 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-17 13:06:19,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-17 13:06:19,721 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-17 13:06:19,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-17 13:06:19,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-17 13:06:19,721 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-17 13:06:19,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-17 13:06:19,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-17 13:06:20,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-17 13:06:20,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-17 13:06:20,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-17 13:06:20,036 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-17 13:06:20,036 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-17 13:06:20,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3.wvr.bpl [2021-06-17 13:06:20,037 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3.wvr.bpl' [2021-06-17 13:06:20,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-17 13:06:20,076 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-17 13:06:20,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-17 13:06:20,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-17 13:06:20,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-17 13:06:20,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:06:20" (1/1) ... [2021-06-17 13:06:20,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:06:20" (1/1) ... [2021-06-17 13:06:20,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-17 13:06:20,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-17 13:06:20,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-17 13:06:20,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-17 13:06:20,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:06:20" (1/1) ... [2021-06-17 13:06:20,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:06:20" (1/1) ... [2021-06-17 13:06:20,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:06:20" (1/1) ... [2021-06-17 13:06:20,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:06:20" (1/1) ... [2021-06-17 13:06:20,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:06:20" (1/1) ... [2021-06-17 13:06:20,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:06:20" (1/1) ... [2021-06-17 13:06:20,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:06:20" (1/1) ... [2021-06-17 13:06:20,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-17 13:06:20,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-17 13:06:20,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-17 13:06:20,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-17 13:06:20,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:06:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 13:06:20,198 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-17 13:06:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-17 13:06:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-17 13:06:20,198 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-17 13:06:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-17 13:06:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-17 13:06:20,198 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-17 13:06:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-17 13:06:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-17 13:06:20,199 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-17 13:06:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-17 13:06:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-17 13:06:20,199 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-17 13:06:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-17 13:06:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-17 13:06:20,200 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-17 13:06:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-17 13:06:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-17 13:06:20,201 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-17 13:06:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-17 13:06:20,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-17 13:06:20,213 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-17 13:06:20,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-17 13:06:20,378 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-17 13:06:20,379 INFO L202 PluginConnector]: Adding new model exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 01:06:20 BoogieIcfgContainer [2021-06-17 13:06:20,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-17 13:06:20,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-17 13:06:20,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-17 13:06:20,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-17 13:06:20,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:06:20" (1/2) ... [2021-06-17 13:06:20,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd37048 and model type exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.06 01:06:20, skipping insertion in model container [2021-06-17 13:06:20,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 01:06:20" (2/2) ... [2021-06-17 13:06:20,384 INFO L111 eAbstractionObserver]: Analyzing ICFG exp3x3.wvr.bpl [2021-06-17 13:06:20,388 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-17 13:06:20,388 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-17 13:06:20,389 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-17 13:06:20,389 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-17 13:06:20,433 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-06-17 13:06:20,448 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-17 13:06:20,485 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 13:06:20,486 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 13:06:20,486 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 13:06:20,486 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 13:06:20,486 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 13:06:20,486 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 13:06:20,486 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 13:06:20,486 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-17 13:06:20,678 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-17 13:06:20,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:06:20,682 INFO L82 PathProgramCache]: Analyzing trace with hash -612544782, now seen corresponding path program 1 times [2021-06-17 13:06:20,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:06:20,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923561993] [2021-06-17 13:06:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:06:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:06:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:06:20,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:06:20,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923561993] [2021-06-17 13:06:20,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923561993] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 13:06:20,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 13:06:20,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-17 13:06:20,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184512828] [2021-06-17 13:06:20,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-17 13:06:20,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 13:06:20,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-17 13:06:20,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-17 13:06:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:06:20,910 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 13:06:20,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 13:06:20,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:06:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:06:21,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-17 13:06:21,022 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-17 13:06:21,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:06:21,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1059002508, now seen corresponding path program 1 times [2021-06-17 13:06:21,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:06:21,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232705969] [2021-06-17 13:06:21,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:06:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:06:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:06:21,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:06:21,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232705969] [2021-06-17 13:06:21,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232705969] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 13:06:21,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 13:06:21,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-17 13:06:21,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814790221] [2021-06-17 13:06:21,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-17 13:06:21,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 13:06:21,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-17 13:06:21,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-17 13:06:21,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:06:21,093 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 13:06:21,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 13:06:21,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:06:21,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:06:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:06:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-17 13:06:21,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-17 13:06:21,157 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-17 13:06:21,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:06:21,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1475471068, now seen corresponding path program 1 times [2021-06-17 13:06:21,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:06:21,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934503713] [2021-06-17 13:06:21,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:06:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:06:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:06:21,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:06:21,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934503713] [2021-06-17 13:06:21,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934503713] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:06:21,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747244810] [2021-06-17 13:06:21,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:06:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:06:21,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-17 13:06:21,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 13:06:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:06:21,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747244810] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:06:21,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 13:06:21,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 4 [2021-06-17 13:06:21,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341305164] [2021-06-17 13:06:21,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-17 13:06:21,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 13:06:21,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-17 13:06:21,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-17 13:06:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:06:21,661 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 13:06:21,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 13:06:21,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:06:21,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-17 13:06:21,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:06:21,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:06:21,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-17 13:06:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:06:21,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:06:21,975 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-17 13:06:21,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:06:21,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1995595610, now seen corresponding path program 2 times [2021-06-17 13:06:21,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:06:21,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656651334] [2021-06-17 13:06:21,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:06:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:06:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:06:22,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:06:22,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656651334] [2021-06-17 13:06:22,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656651334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:06:22,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561056201] [2021-06-17 13:06:22,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:06:22,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-17 13:06:22,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 13:06:22,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-17 13:06:22,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 13:06:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:06:22,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561056201] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:06:22,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 13:06:22,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-06-17 13:06:22,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447310460] [2021-06-17 13:06:22,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-17 13:06:22,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 13:06:22,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-17 13:06:22,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-17 13:06:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:06:22,191 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 13:06:22,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 13:06:22,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:06:22,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-17 13:06:22,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:06:22,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:06:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:06:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-17 13:06:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:06:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 13:06:22,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:06:22,599 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-17 13:06:22,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:06:22,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1223705048, now seen corresponding path program 3 times [2021-06-17 13:06:22,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:06:22,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160842319] [2021-06-17 13:06:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:06:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:06:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:06:22,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:06:22,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160842319] [2021-06-17 13:06:22,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160842319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:06:22,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959195294] [2021-06-17 13:06:22,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:06:22,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-17 13:06:22,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 13:06:22,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-17 13:06:22,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 13:06:22,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:06:22,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959195294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:06:22,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 13:06:22,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 6 [2021-06-17 13:06:22,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308390243] [2021-06-17 13:06:22,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-17 13:06:22,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 13:06:22,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-17 13:06:22,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-17 13:06:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:06:22,889 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 13:06:22,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 13:06:22,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:06:22,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-17 13:06:22,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:06:22,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 13:06:22,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:06:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:06:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-17 13:06:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:06:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 13:06:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-17 13:06:23,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:06:23,192 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-17 13:06:23,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:06:23,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1981527210, now seen corresponding path program 4 times [2021-06-17 13:06:23,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:06:23,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987757153] [2021-06-17 13:06:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:06:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:06:23,238 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:06:23,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:06:23,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987757153] [2021-06-17 13:06:23,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987757153] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:06:23,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815062682] [2021-06-17 13:06:23,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:06:23,282 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-17 13:06:23,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 13:06:23,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-17 13:06:23,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 13:06:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:06:23,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815062682] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:06:23,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 13:06:23,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-17 13:06:23,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174656351] [2021-06-17 13:06:23,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-17 13:06:23,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 13:06:23,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-17 13:06:23,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-06-17 13:06:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:06:23,406 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 13:06:23,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 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) [2021-06-17 13:06:23,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:06:23,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-17 13:06:23,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:06:23,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 13:06:23,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-17 13:06:23,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:06:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:06:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-17 13:06:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:06:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 13:06:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-17 13:06:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-17 13:06:23,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-17 13:06:23,889 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-17 13:06:23,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:06:23,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1729568468, now seen corresponding path program 5 times [2021-06-17 13:06:23,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:06:23,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562602471] [2021-06-17 13:06:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:06:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:06:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:06:23,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:06:23,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562602471] [2021-06-17 13:06:23,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562602471] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:06:23,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346885814] [2021-06-17 13:06:23,954 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:06:23,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-17 13:06:23,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 13:06:23,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-17 13:06:23,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown