/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-Persistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized09.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 12:18:28,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 12:18:28,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 12:18:28,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-01 12:18:28,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-01 12:18:28,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-01 12:18:28,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-01 12:18:28,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-01 12:18:28,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-01 12:18:28,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-01 12:18:28,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-01 12:18:28,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-01 12:18:28,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 12:18:28,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 12:18:28,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 12:18:28,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 12:18:28,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 12:18:28,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 12:18:28,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 12:18:28,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 12:18:28,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 12:18:28,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 12:18:28,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 12:18:28,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 12:18:28,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-01 12:18:28,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 12:18:28,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 12:18:28,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 12:18:28,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-Persistent-NoLbe.epf [2021-07-01 12:18:28,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 12:18:28,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 12:18:28,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 12:18:28,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 12:18:28,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 12:18:28,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 12:18:28,149 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 12:18:28,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 12:18:28,150 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 12:18:28,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 12:18:28,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 12:18:28,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 12:18:28,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 12:18:28,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 12:18:28,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 12:18:28,151 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 12:18:28,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 12:18:28,151 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 12:18:28,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 12:18:28,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 12:18:28,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 12:18:28,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 12:18:28,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 12:18:28,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 12:18:28,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 12:18:28,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 12:18:28,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 12:18:28,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 12:18:28,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 12:18:28,154 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 12:18:28,154 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-01 12:18:28,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 12:18:28,155 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-07-01 12:18:28,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 12:18:28,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 12:18:28,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 12:18:28,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 12:18:28,495 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 12:18:28,496 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 12:18:28,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized09.bpl [2021-07-01 12:18:28,497 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized09.bpl' [2021-07-01 12:18:28,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 12:18:28,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 12:18:28,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 12:18:28,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 12:18:28,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 12:18:28,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ... [2021-07-01 12:18:28,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ... [2021-07-01 12:18:28,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 12:18:28,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 12:18:28,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 12:18:28,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 12:18:28,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ... [2021-07-01 12:18:28,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ... [2021-07-01 12:18:28,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ... [2021-07-01 12:18:28,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ... [2021-07-01 12:18:28,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ... [2021-07-01 12:18:28,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ... [2021-07-01 12:18:28,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ... [2021-07-01 12:18:28,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 12:18:28,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 12:18:28,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 12:18:28,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 12:18:28,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (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 12:18:28,657 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 12:18:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 12:18:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 12:18:28,658 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 12:18:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 12:18:28,658 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 12:18:28,658 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 12:18:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 12:18:28,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 12:18:28,660 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 12:18:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 12:18:28,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 12:18:28,661 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 12:18:28,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 12:18:28,844 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 12:18:28,845 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-01 12:18:28,845 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 12:18:28,847 INFO L202 PluginConnector]: Adding new model bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:18:28 BoogieIcfgContainer [2021-07-01 12:18:28,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 12:18:28,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 12:18:28,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 12:18:28,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 12:18:28,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/2) ... [2021-07-01 12:18:28,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8ebd02 and model type bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:18:28, skipping insertion in model container [2021-07-01 12:18:28,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:18:28" (2/2) ... [2021-07-01 12:18:28,859 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-customized09.bpl [2021-07-01 12:18:28,864 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 12:18:28,864 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 12:18:28,865 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 12:18:28,865 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 12:18:28,932 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 12:18:28,967 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 12:18:29,041 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 12:18:29,041 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 12:18:29,042 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 12:18:29,042 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 12:18:29,043 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 12:18:29,043 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 12:18:29,043 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 12:18:29,043 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 12:18:29,610 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 12:18:29,612 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 12:18:29,630 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 12:18:29,630 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 12:18:29,631 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 12:18:29,631 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 12:18:29,631 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 12:18:29,631 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 12:18:29,631 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 12:18:29,631 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 12:18:29,902 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:18:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:18:29,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1116941240, now seen corresponding path program 1 times [2021-07-01 12:18:29,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:18:29,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997848649] [2021-07-01 12:18:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:18:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:18:30,021 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 12:18:30,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:18:30,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997848649] [2021-07-01 12:18:30,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997848649] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 12:18:30,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 12:18:30,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 12:18:30,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630967184] [2021-07-01 12:18:30,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-01 12:18:30,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:18:30,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-01 12:18:30,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-01 12:18:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:30,041 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:18:30,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 12:18:30,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 12:18:30,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 12:18:30,139 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:18:30,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:18:30,139 INFO L82 PathProgramCache]: Analyzing trace with hash 854426639, now seen corresponding path program 1 times [2021-07-01 12:18:30,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:18:30,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467447603] [2021-07-01 12:18:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:18:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:18:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-01 12:18:30,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:18:30,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467447603] [2021-07-01 12:18:30,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467447603] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 12:18:30,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 12:18:30,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 12:18:30,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255652572] [2021-07-01 12:18:30,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 12:18:30,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:18:30,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 12:18:30,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 12:18:30,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:30,180 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:18:30,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 12:18:30,180 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 12:18:30,180 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:33,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 12:18:33,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:18:33,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 12:18:33,251 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:18:33,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:18:33,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1994514152, now seen corresponding path program 1 times [2021-07-01 12:18:33,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:18:33,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052012002] [2021-07-01 12:18:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:18:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:18:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-07-01 12:18:33,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:18:33,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052012002] [2021-07-01 12:18:33,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052012002] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:18:33,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89867503] [2021-07-01 12:18:33,410 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 12:18:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:18:33,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-01 12:18:33,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:18:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-07-01 12:18:33,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89867503] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:18:33,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:18:33,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-07-01 12:18:33,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309049988] [2021-07-01 12:18:33,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-01 12:18:33,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:18:33,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-01 12:18:33,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-01 12:18:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:33,804 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:18:33,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 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) [2021-07-01 12:18:33,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 12:18:33,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:18:33,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 12:18:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:18:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:18:34,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:18:34,225 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:18:34,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:18:34,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2125132797, now seen corresponding path program 1 times [2021-07-01 12:18:34,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:18:34,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393634676] [2021-07-01 12:18:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:18:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:18:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 121 proven. 21 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-07-01 12:18:34,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:18:34,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393634676] [2021-07-01 12:18:34,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393634676] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:18:34,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195728383] [2021-07-01 12:18:34,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-07-01 12:18:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:18:34,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 39 conjunts are in the unsatisfiable core [2021-07-01 12:18:34,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:18:34,713 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 121 proven. 21 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-07-01 12:18:34,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195728383] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:18:34,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:18:34,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-07-01 12:18:34,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72923992] [2021-07-01 12:18:34,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 12:18:34,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:18:34,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 12:18:34,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-01 12:18:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:34,716 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:18:34,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 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) [2021-07-01 12:18:34,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 12:18:34,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:18:34,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:18:34,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 12:18:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:18:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:18:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:18:35,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:18:35,537 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:18:35,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:18:35,537 INFO L82 PathProgramCache]: Analyzing trace with hash 832322401, now seen corresponding path program 1 times [2021-07-01 12:18:35,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:18:35,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114045798] [2021-07-01 12:18:35,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:18:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:18:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 462 proven. 103 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-07-01 12:18:35,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:18:35,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114045798] [2021-07-01 12:18:35,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114045798] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:18:35,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529966521] [2021-07-01 12:18:35,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:18:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:18:35,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 67 conjunts are in the unsatisfiable core [2021-07-01 12:18:35,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:18:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 462 proven. 103 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-07-01 12:18:36,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529966521] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:18:36,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:18:36,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-07-01 12:18:36,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396921098] [2021-07-01 12:18:36,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 12:18:36,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:18:36,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 12:18:36,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-07-01 12:18:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:36,121 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:18:36,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 7.333333333333333) 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) [2021-07-01 12:18:36,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 12:18:36,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:18:36,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:18:36,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:18:36,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 12:18:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:18:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:18:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:18:38,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:18:38,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:18:38,962 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:18:38,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:18:38,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1314814938, now seen corresponding path program 1 times [2021-07-01 12:18:38,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:18:38,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898528868] [2021-07-01 12:18:38,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:18:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:18:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3338 backedges. 1894 proven. 550 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2021-07-01 12:18:39,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:18:39,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898528868] [2021-07-01 12:18:39,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898528868] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:18:39,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264992528] [2021-07-01 12:18:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-07-01 12:18:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:18:39,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 149 conjunts are in the unsatisfiable core [2021-07-01 12:18:39,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:18:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3338 backedges. 1894 proven. 550 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2021-07-01 12:18:39,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264992528] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:18:39,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:18:39,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-07-01 12:18:39,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560061980] [2021-07-01 12:18:39,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 12:18:39,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:18:39,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 12:18:39,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-07-01 12:18:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:39,985 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:18:39,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 12:18:39,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 12:18:39,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:18:39,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:18:39,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:18:39,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:18:39,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 12:18:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:18:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:18:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:18:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:18:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:18:55,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:18:55,154 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:18:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:18:55,154 INFO L82 PathProgramCache]: Analyzing trace with hash -356969350, now seen corresponding path program 1 times [2021-07-01 12:18:55,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:18:55,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734493396] [2021-07-01 12:18:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:18:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:18:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 38731 backedges. 16840 proven. 710 refuted. 0 times theorem prover too weak. 21181 trivial. 0 not checked. [2021-07-01 12:18:56,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:18:56,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734493396] [2021-07-01 12:18:56,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734493396] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:18:56,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360282671] [2021-07-01 12:18:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-07-01 12:18:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:18:56,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 1542 conjuncts, 545 conjunts are in the unsatisfiable core [2021-07-01 12:18:56,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:18:58,060 INFO L134 CoverageAnalysis]: Checked inductivity of 38731 backedges. 17379 proven. 11166 refuted. 0 times theorem prover too weak. 10186 trivial. 0 not checked. [2021-07-01 12:18:58,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360282671] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:18:58,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:18:58,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-07-01 12:18:58,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199087745] [2021-07-01 12:18:58,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-01 12:18:58,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:18:58,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-01 12:18:58,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-07-01 12:18:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:18:58,065 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:18:58,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 10 states have internal predecessors, (120), 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 12:18:58,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 12:18:58,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:18:58,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:18:58,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:18:58,066 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:18:58,066 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 12:18:58,066 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.