/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-DelaySleepPersistentFixedOrder-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect09.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 12:35:21,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 12:35:21,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 12:35:21,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-01 12:35:21,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-01 12:35:21,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-01 12:35:21,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-01 12:35:21,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-01 12:35:21,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-01 12:35:21,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-01 12:35:21,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-01 12:35:21,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-01 12:35:21,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 12:35:21,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 12:35:21,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 12:35:21,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 12:35:21,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 12:35:21,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 12:35:21,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 12:35:21,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 12:35:21,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 12:35:21,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 12:35:21,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 12:35:21,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 12:35:21,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-01 12:35:21,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 12:35:21,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 12:35:21,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 12:35:21,790 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-DelaySleepPersistentFixedOrder-NoLbe.epf [2021-07-01 12:35:21,809 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 12:35:21,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 12:35:21,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 12:35:21,810 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 12:35:21,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 12:35:21,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 12:35:21,811 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 12:35:21,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 12:35:21,812 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 12:35:21,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 12:35:21,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 12:35:21,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 12:35:21,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 12:35:21,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 12:35:21,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 12:35:21,813 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 12:35:21,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 12:35:21,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 12:35:21,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 12:35:21,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 12:35:21,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 12:35:21,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 12:35:21,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 12:35:21,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 12:35:21,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 12:35:21,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 12:35:21,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 12:35:21,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 12:35:21,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 12:35:21,814 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 12:35:21,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-01 12:35:21,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 12:35:21,815 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_DELAY_SET_FIXEDORDER [2021-07-01 12:35:21,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 12:35:22,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 12:35:22,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 12:35:22,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 12:35:22,154 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 12:35:22,155 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 12:35:22,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect09.bpl [2021-07-01 12:35:22,156 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect09.bpl' [2021-07-01 12:35:22,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 12:35:22,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 12:35:22,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 12:35:22,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 12:35:22,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 12:35:22,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:35:22" (1/1) ... [2021-07-01 12:35:22,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:35:22" (1/1) ... [2021-07-01 12:35:22,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 12:35:22,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 12:35:22,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 12:35:22,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 12:35:22,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:35:22" (1/1) ... [2021-07-01 12:35:22,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:35:22" (1/1) ... [2021-07-01 12:35:22,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:35:22" (1/1) ... [2021-07-01 12:35:22,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:35:22" (1/1) ... [2021-07-01 12:35:22,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:35:22" (1/1) ... [2021-07-01 12:35:22,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:35:22" (1/1) ... [2021-07-01 12:35:22,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:35:22" (1/1) ... [2021-07-01 12:35:22,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 12:35:22,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 12:35:22,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 12:35:22,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 12:35:22,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:35:22" (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 [2021-07-01 12:35:22,287 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 12:35:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 12:35:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 12:35:22,287 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 12:35:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 12:35:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 12:35:22,288 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 12:35:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 12:35:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 12:35:22,288 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 12:35:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 12:35:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 12:35:22,289 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-01 12:35:22,445 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 12:35:22,445 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 12:35:22,447 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:35:22 BoogieIcfgContainer [2021-07-01 12:35:22,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 12:35:22,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 12:35:22,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 12:35:22,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 12:35:22,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:35:22" (1/2) ... [2021-07-01 12:35:22,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12807c5c and model type bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:35:22, skipping insertion in model container [2021-07-01 12:35:22,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:35:22" (2/2) ... [2021-07-01 12:35:22,453 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-incorrect09.bpl [2021-07-01 12:35:22,457 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 12:35:22,457 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 12:35:22,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 12:35:22,458 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 12:35:22,492 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 12:35:22,510 INFO L255 AbstractCegarLoop]: Starting to check reachability of 10 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 [2021-07-01 12:35:22,646 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 12:35:22,646 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 12:35:22,646 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 12:35:22,647 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 12:35:22,647 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 12:35:22,649 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 12:35:22,650 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 12:35:22,650 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 12:35:22,816 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 12:35:22,817 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-07-01 12:35:22,840 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 12:35:22,840 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 12:35:22,840 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 12:35:22,840 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 12:35:22,841 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 12:35:22,841 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 12:35:22,841 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 12:35:22,841 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-01 12:35:22,959 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:35:22,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:35:22,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1369755528, now seen corresponding path program 1 times [2021-07-01 12:35:22,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:35:22,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231505531] [2021-07-01 12:35:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:35:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:35:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 12:35:23,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:35:23,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231505531] [2021-07-01 12:35:23,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231505531] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 12:35:23,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 12:35:23,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 12:35:23,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108036974] [2021-07-01 12:35:23,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 12:35:23,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:35:23,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 12:35:23,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 12:35:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:35:23,068 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:35:23,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-07-01 12:35:23,070 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:35:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:35:23,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 12:35:23,097 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:35:23,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:35:23,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1145624261, now seen corresponding path program 1 times [2021-07-01 12:35:23,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:35:23,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857328633] [2021-07-01 12:35:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:35:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:35:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 12:35:23,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:35:23,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857328633] [2021-07-01 12:35:23,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857328633] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 12:35:23,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 12:35:23,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 12:35:23,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756072540] [2021-07-01 12:35:23,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 12:35:23,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:35:23,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 12:35:23,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 12:35:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:35:23,112 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:35:23,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-07-01 12:35:23,112 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:35:23,112 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:35:25,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:35:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:35:25,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 12:35:25,076 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:35:25,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:35:25,077 INFO L82 PathProgramCache]: Analyzing trace with hash -670297389, now seen corresponding path program 1 times [2021-07-01 12:35:25,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:35:25,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451263658] [2021-07-01 12:35:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:35:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:35:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-01 12:35:25,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:35:25,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451263658] [2021-07-01 12:35:25,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451263658] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:35:25,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956714815] [2021-07-01 12:35:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-07-01 12:35:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:35:25,240 WARN L261 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 24 conjunts are in the unsatisfiable core [2021-07-01 12:35:25,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:35:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-01 12:35:25,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956714815] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:35:25,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:35:25,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-07-01 12:35:25,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514297253] [2021-07-01 12:35:25,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-01 12:35:25,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:35:25,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-01 12:35:25,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-07-01 12:35:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:35:25,436 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:35:25,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 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) [2021-07-01 12:35:25,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:35:25,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:35:25,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.