/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-NewStatesSleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized07.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 11:13:20,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 11:13:20,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 11:13:20,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-01 11:13:20,943 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-NewStatesSleep-NoLbe-Lockstep.epf [2021-07-01 11:13:20,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 11:13:20,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 11:13:20,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 11:13:20,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 11:13:20,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 11:13:20,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 11:13:20,959 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 11:13:20,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 11:13:20,960 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 11:13:20,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 11:13:20,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 11:13:20,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 11:13:20,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 11:13:20,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 11:13:20,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 11:13:20,960 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 11:13:20,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 11:13:20,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 11:13:20,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 11:13:20,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 11:13:20,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 11:13:20,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 11:13:20,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 11:13:20,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 11:13:20,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 11:13:20,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 11:13:20,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 11:13:20,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 11:13:20,962 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-01 11:13:20,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 11:13:20,962 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 11:13:20,962 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-01 11:13:20,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 11:13:20,962 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-01 11:13:20,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 11:13:21,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 11:13:21,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 11:13:21,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 11:13:21,246 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 11:13:21,247 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 11:13:21,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized07.bpl [2021-07-01 11:13:21,248 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized07.bpl' [2021-07-01 11:13:21,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 11:13:21,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 11:13:21,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 11:13:21,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 11:13:21,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 11:13:21,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:13:21" (1/1) ... [2021-07-01 11:13:21,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:13:21" (1/1) ... [2021-07-01 11:13:21,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 11:13:21,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 11:13:21,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 11:13:21,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 11:13:21,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:13:21" (1/1) ... [2021-07-01 11:13:21,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:13:21" (1/1) ... [2021-07-01 11:13:21,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:13:21" (1/1) ... [2021-07-01 11:13:21,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:13:21" (1/1) ... [2021-07-01 11:13:21,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:13:21" (1/1) ... [2021-07-01 11:13:21,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:13:21" (1/1) ... [2021-07-01 11:13:21,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:13:21" (1/1) ... [2021-07-01 11:13:21,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 11:13:21,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 11:13:21,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 11:13:21,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 11:13:21,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:13:21" (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 11:13:21,355 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 11:13:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 11:13:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 11:13:21,355 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 11:13:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 11:13:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 11:13:21,355 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 11:13:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 11:13:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 11:13:21,355 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 11:13:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 11:13:21,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 11:13:21,356 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 11:13:21,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 11:13:21,503 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 11:13:21,503 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-01 11:13:21,503 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 11:13:21,505 INFO L202 PluginConnector]: Adding new model bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:13:21 BoogieIcfgContainer [2021-07-01 11:13:21,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 11:13:21,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 11:13:21,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 11:13:21,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 11:13:21,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:13:21" (1/2) ... [2021-07-01 11:13:21,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312b950d and model type bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:13:21, skipping insertion in model container [2021-07-01 11:13:21,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:13:21" (2/2) ... [2021-07-01 11:13:21,509 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-customized07.bpl [2021-07-01 11:13:21,513 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 11:13:21,513 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 11:13:21,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 11:13:21,514 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 11:13:21,541 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 11:13:21,556 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 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 11:13:21,617 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 11:13:21,617 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 11:13:21,617 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 11:13:21,617 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 11:13:21,617 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 11:13:21,617 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 11:13:21,617 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 11:13:21,618 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 11:13:32,316 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 11:13:32,317 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 11:13:32,340 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 11:13:32,341 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 11:13:32,341 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 11:13:32,341 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 11:13:32,341 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 11:13:32,341 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 11:13:32,341 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 11:13:32,341 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 11:13:32,380 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:13:32,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:13:32,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1726200253, now seen corresponding path program 1 times [2021-07-01 11:13:32,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:13:32,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064568519] [2021-07-01 11:13:32,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:13:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:13:32,472 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 11:13:32,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:13:32,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064568519] [2021-07-01 11:13:32,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064568519] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 11:13:32,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 11:13:32,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 11:13:32,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620887551] [2021-07-01 11:13:32,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 11:13:32,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:13:32,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 11:13:32,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 11:13:32,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:13:32,488 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:13:32,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.0) 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 11:13:32,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:13:32,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:13:32,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 11:13:32,613 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:13:32,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:13:32,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2133900617, now seen corresponding path program 1 times [2021-07-01 11:13:32,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:13:32,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358310797] [2021-07-01 11:13:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:13:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:13:32,644 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 11:13:32,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:13:32,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358310797] [2021-07-01 11:13:32,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358310797] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 11:13:32,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 11:13:32,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 11:13:32,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356536303] [2021-07-01 11:13:32,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-01 11:13:32,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:13:32,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-01 11:13:32,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-01 11:13:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:13:32,648 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:13:32,649 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 11:13:32,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:13:32,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:13:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:13:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 11:13:33,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 11:13:33,109 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:13:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:13:33,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2037171386, now seen corresponding path program 1 times [2021-07-01 11:13:33,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:13:33,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378252795] [2021-07-01 11:13:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:13:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:13:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-01 11:13:33,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:13:33,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378252795] [2021-07-01 11:13:33,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378252795] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:13:33,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674437690] [2021-07-01 11:13:33,164 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 11:13:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:13:33,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-01 11:13:33,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 11:13:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-01 11:13:33,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674437690] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:13:33,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 11:13:33,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-07-01 11:13:33,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900246443] [2021-07-01 11:13:33,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-01 11:13:33,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:13:33,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-01 11:13:33,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-01 11:13:33,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:13:33,522 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:13:33,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 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) [2021-07-01 11:13:33,522 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:13:33,522 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 11:13:33,522 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:13:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:13:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 11:13:34,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 11:13:34,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 11:13:34,268 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:13:34,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:13:34,269 INFO L82 PathProgramCache]: Analyzing trace with hash -280604493, now seen corresponding path program 1 times [2021-07-01 11:13:34,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:13:34,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414926729] [2021-07-01 11:13:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:13:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:13:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-01 11:13:34,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:13:34,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414926729] [2021-07-01 11:13:34,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414926729] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:13:34,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900884849] [2021-07-01 11:13:34,317 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 11:13:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:13:34,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2021-07-01 11:13:34,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 11:13:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-01 11:13:34,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900884849] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:13:34,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 11:13:34,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-07-01 11:13:34,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799487680] [2021-07-01 11:13:34,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 11:13:34,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:13:34,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 11:13:34,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-01 11:13:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:13:34,470 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:13:34,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 11:13:34,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:13:34,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 11:13:34,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 11:13:34,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:13:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:13:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 11:13:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 11:13:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:13:35,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 11:13:35,416 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:13:35,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:13:35,417 INFO L82 PathProgramCache]: Analyzing trace with hash 939058770, now seen corresponding path program 1 times [2021-07-01 11:13:35,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:13:35,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471115216] [2021-07-01 11:13:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:13:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:13:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 57 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-07-01 11:13:35,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:13:35,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471115216] [2021-07-01 11:13:35,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471115216] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:13:35,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844202393] [2021-07-01 11:13:35,528 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 11:13:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:13:35,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 42 conjunts are in the unsatisfiable core [2021-07-01 11:13:35,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 11:13:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 57 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-07-01 11:13:35,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844202393] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:13:35,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 11:13:35,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-07-01 11:13:35,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728870957] [2021-07-01 11:13:35,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 11:13:35,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:13:35,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 11:13:35,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-07-01 11:13:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:13:35,755 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:13:35,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 11:13:35,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:13:35,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 11:13:35,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 11:13:35,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:13:35,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:13:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:13:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 11:13:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 11:13:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:13:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:13:38,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 11:13:38,631 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:13:38,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:13:38,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1644008520, now seen corresponding path program 1 times [2021-07-01 11:13:38,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:13:38,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363500743] [2021-07-01 11:13:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:13:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:13:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 46 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-07-01 11:13:38,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:13:38,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363500743] [2021-07-01 11:13:38,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363500743] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:13:38,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376692348] [2021-07-01 11:13:38,726 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 11:13:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:13:38,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 42 conjunts are in the unsatisfiable core [2021-07-01 11:13:38,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 11:13:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 46 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-07-01 11:13:38,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376692348] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:13:38,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 11:13:38,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-07-01 11:13:38,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962525816] [2021-07-01 11:13:38,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 11:13:38,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:13:38,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 11:13:38,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-07-01 11:13:38,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:13:38,920 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:13:38,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 11:13:38,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:13:38,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 11:13:38,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 11:13:38,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:13:38,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:13:38,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:14:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:14:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 11:14:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 11:14:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:14:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:14:23,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 11:14:23,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 11:14:23,566 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 11:14:23,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 11:14:23,566 INFO L82 PathProgramCache]: Analyzing trace with hash 915351068, now seen corresponding path program 1 times [2021-07-01 11:14:23,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 11:14:23,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877999749] [2021-07-01 11:14:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 11:14:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:14:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 69 proven. 30 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-07-01 11:14:23,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 11:14:23,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877999749] [2021-07-01 11:14:23,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877999749] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:14:23,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974688480] [2021-07-01 11:14:23,683 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 11:14:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 11:14:23,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 54 conjunts are in the unsatisfiable core [2021-07-01 11:14:23,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 11:14:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 69 proven. 30 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-07-01 11:14:23,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974688480] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 11:14:23,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 11:14:23,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-07-01 11:14:23,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671559964] [2021-07-01 11:14:23,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-01 11:14:23,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 11:14:23,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-01 11:14:23,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-07-01 11:14:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 11:14:23,911 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 11:14:23,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 11:14:23,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 11:14:23,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 11:14:23,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 11:14:23,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 11:14:23,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 11:14:23,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 11:14:23,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.