/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-Persistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct09.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 09:11:11,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 09:11:11,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 09:11:11,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 09:11:11,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 09:11:11,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 09:11:11,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 09:11:11,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-Persistent-NoLbe.epf [2021-07-14 09:11:11,519 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 09:11:11,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 09:11:11,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 09:11:11,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 09:11:11,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 09:11:11,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 09:11:11,522 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 09:11:11,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 09:11:11,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 09:11:11,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 09:11:11,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 09:11:11,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 09:11:11,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 09:11:11,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 09:11:11,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 09:11:11,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 09:11:11,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 09:11:11,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 09:11:11,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 09:11:11,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 09:11:11,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 09:11:11,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 09:11:11,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 09:11:11,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 09:11:11,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 09:11:11,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 09:11:11,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 09:11:11,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 09:11:11,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 09:11:11,525 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 09:11:11,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 09:11:11,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 09:11:11,526 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-07-14 09:11:11,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 09:11:11,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 09:11:11,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 09:11:11,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 09:11:11,800 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 09:11:11,801 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 09:11:11,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct09.bpl [2021-07-14 09:11:11,802 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct09.bpl' [2021-07-14 09:11:11,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 09:11:11,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 09:11:11,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 09:11:11,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 09:11:11,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 09:11:11,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:11" (1/1) ... [2021-07-14 09:11:11,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:11" (1/1) ... [2021-07-14 09:11:11,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 09:11:11,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 09:11:11,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 09:11:11,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 09:11:11,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:11" (1/1) ... [2021-07-14 09:11:11,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:11" (1/1) ... [2021-07-14 09:11:11,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:11" (1/1) ... [2021-07-14 09:11:11,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:11" (1/1) ... [2021-07-14 09:11:11,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:11" (1/1) ... [2021-07-14 09:11:11,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:11" (1/1) ... [2021-07-14 09:11:11,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:11" (1/1) ... [2021-07-14 09:11:11,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 09:11:11,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 09:11:11,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 09:11:11,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 09:11:11,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 09:11:11,906 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-14 09:11:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-14 09:11:11,907 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-14 09:11:11,907 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-14 09:11:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-14 09:11:11,907 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-14 09:11:11,907 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-14 09:11:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-14 09:11:11,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-14 09:11:11,908 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 09:11:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 09:11:11,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 09:11:11,909 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 09:11:12,182 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 09:11:12,182 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-14 09:11:12,183 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-14 09:11:12,183 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-14 09:11:12,184 INFO L202 PluginConnector]: Adding new model bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 09:11:12 BoogieIcfgContainer [2021-07-14 09:11:12,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 09:11:12,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 09:11:12,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 09:11:12,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 09:11:12,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:11" (1/2) ... [2021-07-14 09:11:12,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c79f125 and model type bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 09:11:12, skipping insertion in model container [2021-07-14 09:11:12,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 09:11:12" (2/2) ... [2021-07-14 09:11:12,189 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct09.bpl [2021-07-14 09:11:12,192 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 09:11:12,192 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 09:11:12,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 09:11:12,193 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 09:11:12,232 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-14 09:11:12,268 INFO L255 AbstractCegarLoop]: Starting to check reachability of 10 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 09:11:12,328 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 09:11:12,329 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 09:11:12,329 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 09:11:12,329 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 09:11:12,329 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 09:11:12,329 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 09:11:12,329 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 09:11:12,329 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 09:11:12,904 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-14 09:11:12,905 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 09:11:12,910 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 09:11:12,911 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 09:11:12,911 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 09:11:12,911 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 09:11:12,911 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 09:11:12,911 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 09:11:12,911 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 09:11:12,911 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-14 09:11:13,114 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:13,117 INFO L82 PathProgramCache]: Analyzing trace with hash 932714056, now seen corresponding path program 1 times [2021-07-14 09:11:13,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:13,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259809068] [2021-07-14 09:11:13,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:13,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 09:11:13,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:13,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259809068] [2021-07-14 09:11:13,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259809068] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 09:11:13,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 09:11:13,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-14 09:11:13,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989335843] [2021-07-14 09:11:13,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 09:11:13,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:13,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 09:11:13,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 09:11:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:13,204 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:13,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:13,205 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:13,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:13,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 09:11:13,296 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:13,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:13,302 INFO L82 PathProgramCache]: Analyzing trace with hash 166102217, now seen corresponding path program 1 times [2021-07-14 09:11:13,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:13,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403073732] [2021-07-14 09:11:13,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-07-14 09:11:13,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:13,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403073732] [2021-07-14 09:11:13,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403073732] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 09:11:13,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 09:11:13,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 09:11:13,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612545254] [2021-07-14 09:11:13,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 09:11:13,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:13,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 09:11:13,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 09:11:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:13,359 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:13,359 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) [2021-07-14 09:11:13,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:13,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:13,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:13,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:13,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 09:11:13,805 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:13,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:13,806 INFO L82 PathProgramCache]: Analyzing trace with hash 2124264124, now seen corresponding path program 1 times [2021-07-14 09:11:13,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:13,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870504994] [2021-07-14 09:11:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-07-14 09:11:13,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:13,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870504994] [2021-07-14 09:11:13,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870504994] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 09:11:13,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 09:11:13,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-14 09:11:13,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432865042] [2021-07-14 09:11:13,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 09:11:13,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:13,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 09:11:13,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-14 09:11:13,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:13,948 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:13,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:13,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:13,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:13,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:14,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:14,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 09:11:14,203 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:14,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:14,204 INFO L82 PathProgramCache]: Analyzing trace with hash -720037576, now seen corresponding path program 1 times [2021-07-14 09:11:14,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:14,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327664617] [2021-07-14 09:11:14,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-07-14 09:11:14,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:14,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327664617] [2021-07-14 09:11:14,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327664617] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:14,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838282339] [2021-07-14 09:11:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:14,399 WARN L261 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 79 conjunts are in the unsatisfiable core [2021-07-14 09:11:14,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:11:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-07-14 09:11:14,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838282339] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:14,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:11:14,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-07-14 09:11:14,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483823343] [2021-07-14 09:11:14,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 09:11:14,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:14,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 09:11:14,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-07-14 09:11:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:14,569 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:14,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:14,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:14,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:14,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:14,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:14,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:14,950 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:14,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:14,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1119958559, now seen corresponding path program 1 times [2021-07-14 09:11:14,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:14,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549635250] [2021-07-14 09:11:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 171 proven. 34 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-07-14 09:11:15,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:15,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549635250] [2021-07-14 09:11:15,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549635250] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:15,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737803118] [2021-07-14 09:11:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:15,158 WARN L261 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 114 conjunts are in the unsatisfiable core [2021-07-14 09:11:15,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:11:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 17 proven. 188 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-07-14 09:11:15,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737803118] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:15,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:11:15,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-07-14 09:11:15,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21841643] [2021-07-14 09:11:15,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-14 09:11:15,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:15,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-14 09:11:15,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-07-14 09:11:15,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:15,344 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:15,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:15,345 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:15,345 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:15,345 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:15,345 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:15,345 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:15,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:15,859 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:15,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:15,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1854466927, now seen corresponding path program 1 times [2021-07-14 09:11:15,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:15,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787517583] [2021-07-14 09:11:15,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 406 proven. 104 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-07-14 09:11:16,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:16,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787517583] [2021-07-14 09:11:16,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787517583] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:16,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982571544] [2021-07-14 09:11:16,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:16,146 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 154 conjunts are in the unsatisfiable core [2021-07-14 09:11:16,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:11:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 22 proven. 488 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-07-14 09:11:16,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982571544] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:16,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:11:16,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-07-14 09:11:16,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065112408] [2021-07-14 09:11:16,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-14 09:11:16,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:16,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-14 09:11:16,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-07-14 09:11:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:16,413 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:16,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 14 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:16,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:16,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:16,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:16,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:16,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:16,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:11:17,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-14 09:11:17,357 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:17,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2003999547, now seen corresponding path program 1 times [2021-07-14 09:11:17,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:17,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402316919] [2021-07-14 09:11:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2057 backedges. 1161 proven. 361 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2021-07-14 09:11:17,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:17,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402316919] [2021-07-14 09:11:17,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402316919] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:17,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557002345] [2021-07-14 09:11:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:17,764 WARN L261 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 274 conjunts are in the unsatisfiable core [2021-07-14 09:11:17,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:11:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2057 backedges. 36 proven. 1486 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2021-07-14 09:11:18,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557002345] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:18,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:11:18,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-07-14 09:11:18,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004670642] [2021-07-14 09:11:18,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-14 09:11:18,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:18,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-14 09:11:18,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-07-14 09:11:18,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:18,113 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:18,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:18,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:18,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:18,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:18,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:18,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:18,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:11:18,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:11:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 09:11:21,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:21,150 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:21,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:21,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1192719091, now seen corresponding path program 1 times [2021-07-14 09:11:21,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:21,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136492324] [2021-07-14 09:11:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 3094 proven. 1244 refuted. 0 times theorem prover too weak. 1209 trivial. 0 not checked. [2021-07-14 09:11:21,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:21,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136492324] [2021-07-14 09:11:21,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136492324] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:21,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557859705] [2021-07-14 09:11:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:22,074 WARN L261 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 474 conjunts are in the unsatisfiable core [2021-07-14 09:11:22,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:11:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 59 proven. 4279 refuted. 0 times theorem prover too weak. 1209 trivial. 0 not checked. [2021-07-14 09:11:22,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557859705] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:22,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:11:22,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-07-14 09:11:22,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657671635] [2021-07-14 09:11:22,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-14 09:11:22,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:22,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-14 09:11:22,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-07-14 09:11:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:22,574 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:22,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 18 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:11:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 09:11:22,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:11:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 09:11:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 09:11:35,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:35,012 INFO L430 AbstractCegarLoop]: === Iteration 9 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:35,012 INFO L82 PathProgramCache]: Analyzing trace with hash 146958536, now seen corresponding path program 1 times [2021-07-14 09:11:35,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:35,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599713552] [2021-07-14 09:11:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 19409 backedges. 10993 proven. 4505 refuted. 0 times theorem prover too weak. 3911 trivial. 0 not checked. [2021-07-14 09:11:37,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:37,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599713552] [2021-07-14 09:11:37,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599713552] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:37,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876993385] [2021-07-14 09:11:37,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:37,882 WARN L261 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 919 conjunts are in the unsatisfiable core [2021-07-14 09:11:37,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:11:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 19409 backedges. 110 proven. 15388 refuted. 0 times theorem prover too weak. 3911 trivial. 0 not checked. [2021-07-14 09:11:38,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876993385] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:38,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:11:38,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-14 09:11:38,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744551802] [2021-07-14 09:11:38,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-14 09:11:38,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:38,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-14 09:11:38,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2021-07-14 09:11:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:38,803 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:38,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 20 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:38,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:38,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:38,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:38,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:38,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:38,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:11:38,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 09:11:38,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 09:11:38,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:12:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:12:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:12:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:12:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:12:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:12:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:12:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 09:12:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 09:12:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 09:12:52,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-07-14 09:12:52,016 INFO L430 AbstractCegarLoop]: === Iteration 10 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:12:52,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:12:52,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1096729208, now seen corresponding path program 1 times [2021-07-14 09:12:52,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:12:52,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498778128] [2021-07-14 09:12:52,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:12:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:13:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 70175 backedges. 38810 proven. 17655 refuted. 0 times theorem prover too weak. 13710 trivial. 0 not checked. [2021-07-14 09:13:05,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:13:05,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498778128] [2021-07-14 09:13:05,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498778128] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:13:05,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245898741] [2021-07-14 09:13:05,351 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 [2021-07-14 09:13:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:13:06,341 WARN L261 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 1779 conjunts are in the unsatisfiable core [2021-07-14 09:13:06,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:13:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 70175 backedges. 209 proven. 56256 refuted. 0 times theorem prover too weak. 13710 trivial. 0 not checked. [2021-07-14 09:13:07,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245898741] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:13:07,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:13:07,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-07-14 09:13:07,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871465096] [2021-07-14 09:13:07,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-07-14 09:13:07,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:13:07,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-07-14 09:13:07,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-07-14 09:13:07,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:13:07,997 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:13:07,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 9.347826086956522) internal successors, (215), 22 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:13:07,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:13:07,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:13:07,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:13:07,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:13:07,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:13:07,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:13:07,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 09:13:07,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 09:13:07,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-14 09:13:07,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.