/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/bluetooth06.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 20:31:13,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 20:31:13,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 20:31:13,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 20:31:13,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 20:31:13,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 20:31:13,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 20:31:13,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 20:31:13,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 20:31:13,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 20:31:13,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 20:31:13,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 20:31:13,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 20:31:13,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 20:31:13,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 20:31:13,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 20:31:13,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 20:31:13,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 20:31:13,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 20:31:13,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 20:31:13,246 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 [2021-06-24 20:31:13,276 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 20:31:13,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 20:31:13,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 20:31:13,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 20:31:13,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 20:31:13,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 20:31:13,279 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 20:31:13,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 20:31:13,279 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 20:31:13,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 20:31:13,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 20:31:13,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 20:31:13,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 20:31:13,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 20:31:13,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 20:31:13,281 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 20:31:13,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 20:31:13,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 20:31:13,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 20:31:13,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 20:31:13,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 20:31:13,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 20:31:13,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 20:31:13,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:31:13,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 20:31:13,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 20:31:13,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 20:31:13,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 20:31:13,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 20:31:13,283 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 20:31:13,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 20:31:13,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 20:31:13,283 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-06-24 20:31:13,284 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 20:31:13,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 20:31:13,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 20:31:13,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 20:31:13,576 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 20:31:13,593 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 20:31:13,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth06.bpl [2021-06-24 20:31:13,594 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth06.bpl' [2021-06-24 20:31:13,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 20:31:13,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 20:31:13,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 20:31:13,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 20:31:13,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 20:31:13,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:13" (1/1) ... [2021-06-24 20:31:13,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:13" (1/1) ... [2021-06-24 20:31:13,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 20:31:13,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 20:31:13,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 20:31:13,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 20:31:13,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:13" (1/1) ... [2021-06-24 20:31:13,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:13" (1/1) ... [2021-06-24 20:31:13,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:13" (1/1) ... [2021-06-24 20:31:13,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:13" (1/1) ... [2021-06-24 20:31:13,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:13" (1/1) ... [2021-06-24 20:31:13,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:13" (1/1) ... [2021-06-24 20:31:13,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:13" (1/1) ... [2021-06-24 20:31:13,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 20:31:13,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 20:31:13,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 20:31:13,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 20:31:13,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:31:13,810 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 20:31:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 20:31:13,810 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 20:31:13,810 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 20:31:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 20:31:13,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 20:31:13,811 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 20:31:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 20:31:13,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 20:31:13,812 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 20:31:13,964 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 20:31:13,964 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 20:31:13,965 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 20:31:13,966 INFO L202 PluginConnector]: Adding new model bluetooth06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:31:13 BoogieIcfgContainer [2021-06-24 20:31:13,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 20:31:13,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 20:31:13,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 20:31:13,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 20:31:13,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:13" (1/2) ... [2021-06-24 20:31:13,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e76f9ca and model type bluetooth06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:31:13, skipping insertion in model container [2021-06-24 20:31:13,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:31:13" (2/2) ... [2021-06-24 20:31:13,971 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth06.bpl [2021-06-24 20:31:13,974 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 20:31:13,975 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 20:31:13,975 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 20:31:13,975 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 20:31:14,003 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 20:31:14,018 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 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 20:31:14,064 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:31:14,064 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:31:14,064 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:31:14,064 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:31:14,064 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:31:14,064 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:31:14,064 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:31:14,064 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork6======== [2021-06-24 20:31:14,514 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:14,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:14,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1682967909, now seen corresponding path program 1 times [2021-06-24 20:31:14,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:14,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783357270] [2021-06-24 20:31:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:31:14,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:14,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783357270] [2021-06-24 20:31:14,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783357270] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:31:14,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:31:14,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:31:14,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890442614] [2021-06-24 20:31:14,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:31:14,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:14,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:31:14,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:31:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:14,640 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:14,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:14,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:14,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:14,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 20:31:14,739 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:14,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:14,743 INFO L82 PathProgramCache]: Analyzing trace with hash 189110552, now seen corresponding path program 1 times [2021-06-24 20:31:14,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:14,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253256247] [2021-06-24 20:31:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-24 20:31:14,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:14,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253256247] [2021-06-24 20:31:14,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253256247] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:31:14,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:31:14,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:31:14,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928153985] [2021-06-24 20:31:14,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:31:14,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:14,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:31:14,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:31:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:14,803 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:14,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:14,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:14,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:14,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:14,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 20:31:14,837 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:14,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:14,838 INFO L82 PathProgramCache]: Analyzing trace with hash 901725334, now seen corresponding path program 2 times [2021-06-24 20:31:14,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:14,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167747853] [2021-06-24 20:31:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-24 20:31:14,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:14,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167747853] [2021-06-24 20:31:14,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167747853] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:31:14,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:31:14,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 20:31:14,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877269389] [2021-06-24 20:31:14,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 20:31:14,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:14,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 20:31:14,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 20:31:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:14,962 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:14,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:14,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:14,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:14,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:15,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:15,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:15,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:15,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 20:31:15,087 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:15,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1548252636, now seen corresponding path program 1 times [2021-06-24 20:31:15,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:15,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242114335] [2021-06-24 20:31:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-06-24 20:31:15,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:15,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242114335] [2021-06-24 20:31:15,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242114335] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:15,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306301028] [2021-06-24 20:31:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:15,353 WARN L261 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 49 conjunts are in the unsatisfiable core [2021-06-24 20:31:15,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-06-24 20:31:15,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306301028] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:15,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:15,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-06-24 20:31:15,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417416253] [2021-06-24 20:31:15,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-24 20:31:15,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:15,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-24 20:31:15,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-24 20:31:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:15,683 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:15,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:15,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:15,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:15,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:15,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:15,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:15,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:16,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:16,156 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:16,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:16,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1572484196, now seen corresponding path program 1 times [2021-06-24 20:31:16,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:16,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546441848] [2021-06-24 20:31:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:16,260 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 75 proven. 27 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-06-24 20:31:16,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:16,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546441848] [2021-06-24 20:31:16,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546441848] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:16,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259790224] [2021-06-24 20:31:16,260 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 [2021-06-24 20:31:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:16,389 WARN L261 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 79 conjunts are in the unsatisfiable core [2021-06-24 20:31:16,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 10 proven. 92 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-06-24 20:31:16,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259790224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:16,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:16,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 20:31:16,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569053324] [2021-06-24 20:31:16,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 20:31:16,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:16,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 20:31:16,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 20:31:16,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:16,592 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:16,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:16,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:16,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:16,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:16,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:16,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:17,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:17,338 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:17,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:17,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1438406690, now seen corresponding path program 1 times [2021-06-24 20:31:17,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:17,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596238955] [2021-06-24 20:31:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 431 proven. 191 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-06-24 20:31:17,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:17,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596238955] [2021-06-24 20:31:17,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596238955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:17,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170732783] [2021-06-24 20:31:17,656 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 [2021-06-24 20:31:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:17,758 WARN L261 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 174 conjunts are in the unsatisfiable core [2021-06-24 20:31:17,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 23 proven. 599 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-06-24 20:31:18,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170732783] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:18,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:18,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 20:31:18,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162272661] [2021-06-24 20:31:18,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 20:31:18,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:18,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 20:31:18,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 20:31:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:18,063 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:18,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:18,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:18,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:18,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:18,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:18,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:18,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:20,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:31:20,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:20,677 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:20,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:20,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1616674352, now seen corresponding path program 1 times [2021-06-24 20:31:20,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:20,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708548974] [2021-06-24 20:31:20,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 2656 proven. 1231 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2021-06-24 20:31:21,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:21,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708548974] [2021-06-24 20:31:21,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708548974] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:21,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860420306] [2021-06-24 20:31:21,597 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 [2021-06-24 20:31:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:21,719 WARN L261 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 429 conjunts are in the unsatisfiable core [2021-06-24 20:31:21,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 57 proven. 3830 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2021-06-24 20:31:22,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860420306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:22,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:22,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-06-24 20:31:22,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143734091] [2021-06-24 20:31:22,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-24 20:31:22,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:22,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-24 20:31:22,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-06-24 20:31:22,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:22,573 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:22,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 16 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:31:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:31:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:31:35,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-24 20:31:35,481 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:35,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:35,482 INFO L82 PathProgramCache]: Analyzing trace with hash 231117355, now seen corresponding path program 1 times [2021-06-24 20:31:35,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:35,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975263389] [2021-06-24 20:31:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 42363 backedges. 21256 proven. 10144 refuted. 0 times theorem prover too weak. 10963 trivial. 0 not checked. [2021-06-24 20:31:40,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:40,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975263389] [2021-06-24 20:31:40,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975263389] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:40,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774910672] [2021-06-24 20:31:40,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:40,524 WARN L261 TraceCheckSpWp]: Trace formula consists of 1695 conjuncts, 1194 conjunts are in the unsatisfiable core [2021-06-24 20:31:40,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 42363 backedges. 159 proven. 31241 refuted. 0 times theorem prover too weak. 10963 trivial. 0 not checked. [2021-06-24 20:31:41,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774910672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:41,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:41,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-24 20:31:41,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138111999] [2021-06-24 20:31:41,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-24 20:31:41,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:41,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-24 20:31:41,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-06-24 20:31:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:41,587 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:41,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 8.68421052631579) internal successors, (165), 18 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:41,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:41,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:41,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:41,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:41,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:41,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:31:41,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:31:41,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:04,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:04,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:04,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:32:04,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:32:04,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:32:04,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:32:04,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:32:04,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-24 20:32:04,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:32:04,629 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork6 was SAFE (1/7) [2021-06-24 20:32:04,630 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 20:32:04,696 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:32:04,696 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:32:04,696 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:32:04,696 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:32:04,696 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:32:04,696 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:32:04,696 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:32:04,696 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 20:32:04,814 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/7) [2021-06-24 20:32:04,815 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 20:32:04,879 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:32:04,880 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:32:04,880 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:32:04,880 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:32:04,880 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:32:04,880 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:32:04,880 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:32:04,880 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork4======== [2021-06-24 20:32:04,981 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:32:04,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:32:04,982 INFO L82 PathProgramCache]: Analyzing trace with hash -968081341, now seen corresponding path program 1 times [2021-06-24 20:32:04,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:32:04,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354994752] [2021-06-24 20:32:04,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:32:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:32:04,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:32:04,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354994752] [2021-06-24 20:32:04,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354994752] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:32:04,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:32:04,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:32:04,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239018126] [2021-06-24 20:32:04,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:32:04,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:32:04,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:32:04,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:32:04,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:04,991 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:32:04,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:32:04,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-24 20:32:05,030 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:32:05,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:32:05,030 INFO L82 PathProgramCache]: Analyzing trace with hash -624591679, now seen corresponding path program 1 times [2021-06-24 20:32:05,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:32:05,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223305254] [2021-06-24 20:32:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:32:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-06-24 20:32:05,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:32:05,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223305254] [2021-06-24 20:32:05,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223305254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:32:05,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:32:05,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:32:05,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031578127] [2021-06-24 20:32:05,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:32:05,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:32:05,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:32:05,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:32:05,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:05,041 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:32:05,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:32:05,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-24 20:32:05,059 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:32:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:32:05,059 INFO L82 PathProgramCache]: Analyzing trace with hash -754744436, now seen corresponding path program 2 times [2021-06-24 20:32:05,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:32:05,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665913874] [2021-06-24 20:32:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:32:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-24 20:32:05,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:32:05,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665913874] [2021-06-24 20:32:05,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665913874] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:32:05,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:32:05,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 20:32:05,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415329426] [2021-06-24 20:32:05,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 20:32:05,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:32:05,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 20:32:05,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 20:32:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:05,091 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:32:05,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:32:05,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:05,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:32:05,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-24 20:32:05,138 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:32:05,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:32:05,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1866073132, now seen corresponding path program 1 times [2021-06-24 20:32:05,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:32:05,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838400465] [2021-06-24 20:32:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:32:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:05,180 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-06-24 20:32:05,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:32:05,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838400465] [2021-06-24 20:32:05,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838400465] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:32:05,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066759196] [2021-06-24 20:32:05,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:32:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:05,262 WARN L261 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 49 conjunts are in the unsatisfiable core [2021-06-24 20:32:05,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:32:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-06-24 20:32:05,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066759196] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:32:05,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:32:05,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-06-24 20:32:05,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733837245] [2021-06-24 20:32:05,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-24 20:32:05,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:32:05,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-24 20:32:05,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-24 20:32:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:05,352 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:32:05,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:32:05,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:32:05,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:05,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:32:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:32:05,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:32:05,732 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:32:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:32:05,733 INFO L82 PathProgramCache]: Analyzing trace with hash 973530275, now seen corresponding path program 1 times [2021-06-24 20:32:05,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:32:05,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825460332] [2021-06-24 20:32:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:32:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 100 proven. 45 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-06-24 20:32:05,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:32:05,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825460332] [2021-06-24 20:32:05,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825460332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:32:05,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259824298] [2021-06-24 20:32:05,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:32:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:05,877 WARN L261 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 84 conjunts are in the unsatisfiable core [2021-06-24 20:32:05,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:32:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 133 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-06-24 20:32:05,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259824298] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:32:05,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:32:05,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 20:32:05,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687551783] [2021-06-24 20:32:05,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 20:32:05,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:32:05,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 20:32:05,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 20:32:05,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:05,991 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:32:05,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:32:05,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:05,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:32:05,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:32:05,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:06,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:06,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:32:06,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:32:06,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:32:06,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:32:06,615 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:32:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:32:06,616 INFO L82 PathProgramCache]: Analyzing trace with hash 228521769, now seen corresponding path program 1 times [2021-06-24 20:32:06,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:32:06,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328475517] [2021-06-24 20:32:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:32:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 401 proven. 197 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-06-24 20:32:06,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:32:06,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328475517] [2021-06-24 20:32:06,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328475517] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:32:06,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112630621] [2021-06-24 20:32:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:32:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:06,837 WARN L261 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 164 conjunts are in the unsatisfiable core [2021-06-24 20:32:06,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:32:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 23 proven. 575 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-06-24 20:32:07,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112630621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:32:07,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:32:07,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 20:32:07,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059324601] [2021-06-24 20:32:07,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 20:32:07,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:32:07,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 20:32:07,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 20:32:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:07,140 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:32:07,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:32:07,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:07,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:07,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:32:07,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:32:07,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:32:07,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:32:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:32:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:32:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:32:09,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-24 20:32:09,539 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:32:09,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:32:09,540 INFO L82 PathProgramCache]: Analyzing trace with hash -980735879, now seen corresponding path program 1 times [2021-06-24 20:32:09,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:32:09,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793569505] [2021-06-24 20:32:09,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:32:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5188 backedges. 2598 proven. 1170 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2021-06-24 20:32:09,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:32:09,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793569505] [2021-06-24 20:32:09,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793569505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:32:09,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438705706] [2021-06-24 20:32:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:32:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:09,974 WARN L261 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 419 conjunts are in the unsatisfiable core [2021-06-24 20:32:09,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:32:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5188 backedges. 57 proven. 3711 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2021-06-24 20:32:10,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438705706] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:32:10,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:32:10,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-06-24 20:32:10,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12765118] [2021-06-24 20:32:10,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-24 20:32:10,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:32:10,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-24 20:32:10,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-06-24 20:32:10,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:10,466 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:32:10,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 7.470588235294118) internal successors, (127), 16 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:32:10,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:10,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:10,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:32:10,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:32:10,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:32:10,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:32:10,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:32:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:32:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:32:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:32:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:32:28,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-24 20:32:28,937 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:32:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:32:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1601116499, now seen corresponding path program 1 times [2021-06-24 20:32:28,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:32:28,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939473464] [2021-06-24 20:32:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:32:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:33,084 INFO L134 CoverageAnalysis]: Checked inductivity of 39587 backedges. 20124 proven. 9139 refuted. 0 times theorem prover too weak. 10324 trivial. 0 not checked. [2021-06-24 20:32:33,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:32:33,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939473464] [2021-06-24 20:32:33,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939473464] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:32:33,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031976714] [2021-06-24 20:32:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:32:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:32:33,362 WARN L261 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 1169 conjunts are in the unsatisfiable core [2021-06-24 20:32:33,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:32:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 39587 backedges. 157 proven. 29106 refuted. 0 times theorem prover too weak. 10324 trivial. 0 not checked. [2021-06-24 20:32:34,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031976714] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:32:34,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:32:34,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-24 20:32:34,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120734932] [2021-06-24 20:32:34,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-24 20:32:34,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:32:34,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-24 20:32:34,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-06-24 20:32:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:32:34,308 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:32:34,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 8.894736842105264) internal successors, (169), 18 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:32:34,308 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:34,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:32:34,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:32:34,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:32:34,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:32:34,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:32:34,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:32:34,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.