/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-None-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert08.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 09:41:39,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 09:41:39,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 09:41:39,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-01 09:41:39,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 09:41:39,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 09:41:39,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 09:41:39,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 09:41:39,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 09:41:39,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 09:41:39,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 09:41:39,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 09:41:39,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 09:41:39,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 09:41:39,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 09:41:39,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 09:41:39,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-01 09:41:39,405 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-None-NoLbe.epf [2021-07-01 09:41:39,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 09:41:39,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 09:41:39,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 09:41:39,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 09:41:39,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 09:41:39,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 09:41:39,447 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 09:41:39,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 09:41:39,448 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 09:41:39,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 09:41:39,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 09:41:39,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 09:41:39,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 09:41:39,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 09:41:39,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 09:41:39,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 09:41:39,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 09:41:39,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 09:41:39,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 09:41:39,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 09:41:39,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 09:41:39,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 09:41:39,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 09:41:39,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 09:41:39,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 09:41:39,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 09:41:39,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 09:41:39,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 09:41:39,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 09:41:39,465 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 09:41:39,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-01 09:41:39,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 09:41:39,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 09:41:39,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 09:41:39,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 09:41:39,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 09:41:39,774 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 09:41:39,775 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 09:41:39,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert08.bpl [2021-07-01 09:41:39,776 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert08.bpl' [2021-07-01 09:41:39,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 09:41:39,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 09:41:39,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 09:41:39,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 09:41:39,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 09:41:39,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:41:39" (1/1) ... [2021-07-01 09:41:39,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:41:39" (1/1) ... [2021-07-01 09:41:39,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 09:41:39,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 09:41:39,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 09:41:39,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 09:41:39,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:41:39" (1/1) ... [2021-07-01 09:41:39,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:41:39" (1/1) ... [2021-07-01 09:41:39,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:41:39" (1/1) ... [2021-07-01 09:41:39,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:41:39" (1/1) ... [2021-07-01 09:41:39,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:41:39" (1/1) ... [2021-07-01 09:41:39,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:41:39" (1/1) ... [2021-07-01 09:41:39,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:41:39" (1/1) ... [2021-07-01 09:41:39,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 09:41:39,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 09:41:39,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 09:41:39,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 09:41:39,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:41:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 09:41:39,908 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 09:41:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 09:41:39,909 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 09:41:39,909 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 09:41:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 09:41:39,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 09:41:39,909 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 09:41:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 09:41:39,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 09:41:39,910 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-01 09:41:40,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 09:41:40,154 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-01 09:41:40,155 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 09:41:40,156 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:41:40 BoogieIcfgContainer [2021-07-01 09:41:40,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 09:41:40,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 09:41:40,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 09:41:40,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 09:41:40,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:41:39" (1/2) ... [2021-07-01 09:41:40,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65954512 and model type bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 09:41:40, skipping insertion in model container [2021-07-01 09:41:40,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:41:40" (2/2) ... [2021-07-01 09:41:40,163 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert08.bpl [2021-07-01 09:41:40,167 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 09:41:40,167 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 09:41:40,168 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 09:41:40,168 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 09:41:40,207 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 09:41:40,227 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 [2021-07-01 09:41:40,283 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:41:40,284 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:41:40,284 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:41:40,284 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:41:40,284 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:41:40,284 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:41:40,284 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:41:40,284 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ServerThreadThread1of1ForFork0======== [2021-07-01 09:41:40,293 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 54 transitions, 153 flow [2021-07-01 09:43:32,572 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 131221 states, 98416 states have (on average 9.133281173792879) internal successors, (898861), 98416 states have internal predecessors, (898861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:43:32,586 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:32,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:32,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1324219015, now seen corresponding path program 1 times [2021-07-01 09:43:32,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:32,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504421127] [2021-07-01 09:43:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:43:32,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:32,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504421127] [2021-07-01 09:43:32,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504421127] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:43:32,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:43:32,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-01 09:43:32,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962432702] [2021-07-01 09:43:32,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-01 09:43:32,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:32,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-01 09:43:32,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-01 09:43:32,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:32,751 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:32,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:43:32,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:32,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 09:43:32,804 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:32,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:32,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1683543428, now seen corresponding path program 1 times [2021-07-01 09:43:32,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:32,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154178032] [2021-07-01 09:43:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:43:32,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:32,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154178032] [2021-07-01 09:43:32,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154178032] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:43:32,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:43:32,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 09:43:32,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708393865] [2021-07-01 09:43:32,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 09:43:32,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:32,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 09:43:32,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:43:32,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:32,860 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:32,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:43:32,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:32,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:33,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:33,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 09:43:33,475 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:33,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:33,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1439566722, now seen corresponding path program 1 times [2021-07-01 09:43:33,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:33,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110541958] [2021-07-01 09:43:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:43:33,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:33,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110541958] [2021-07-01 09:43:33,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110541958] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:43:33,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:43:33,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-01 09:43:33,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679109378] [2021-07-01 09:43:33,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 09:43:33,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:33,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 09:43:33,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-01 09:43:33,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:33,587 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:33,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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) [2021-07-01 09:43:33,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:33,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:33,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:33,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:33,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:33,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:33,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 09:43:33,638 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:33,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1438851552, now seen corresponding path program 2 times [2021-07-01 09:43:33,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:33,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969227090] [2021-07-01 09:43:33,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:43:33,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:33,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969227090] [2021-07-01 09:43:33,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969227090] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:43:33,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:43:33,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 09:43:33,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310727843] [2021-07-01 09:43:33,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 09:43:33,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:33,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 09:43:33,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-01 09:43:33,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:33,747 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:33,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 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) [2021-07-01 09:43:33,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:33,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:33,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:33,748 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:33,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:33,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:33,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-01 09:43:33,847 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:33,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:33,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1886238847, now seen corresponding path program 1 times [2021-07-01 09:43:33,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:33,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650748639] [2021-07-01 09:43:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:33,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-01 09:43:33,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:33,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650748639] [2021-07-01 09:43:33,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650748639] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:33,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618465980] [2021-07-01 09:43:33,981 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 [2021-07-01 09:43:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:34,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 21 conjunts are in the unsatisfiable core [2021-07-01 09:43:34,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 09:43:34,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-01 09:43:34,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618465980] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:34,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 09:43:34,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-07-01 09:43:34,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290944430] [2021-07-01 09:43:34,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 09:43:34,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:34,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 09:43:34,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-01 09:43:34,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:34,440 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:34,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:43:34,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:34,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:34,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:34,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:34,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:34,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 09:43:34,776 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:34,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:34,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1666029798, now seen corresponding path program 2 times [2021-07-01 09:43:34,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:34,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196600873] [2021-07-01 09:43:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-01 09:43:34,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:34,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196600873] [2021-07-01 09:43:34,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196600873] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:34,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142244123] [2021-07-01 09:43:34,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 09:43:34,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 09:43:34,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 09:43:34,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-01 09:43:34,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 09:43:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-01 09:43:35,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142244123] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:35,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 09:43:35,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-07-01 09:43:35,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366122734] [2021-07-01 09:43:35,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-01 09:43:35,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:35,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-01 09:43:35,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-07-01 09:43:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:35,177 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:35,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:43:35,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:35,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:35,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:35,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:35,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:35,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:35,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:35,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 09:43:35,653 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:35,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1897519935, now seen corresponding path program 1 times [2021-07-01 09:43:35,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:35,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135652453] [2021-07-01 09:43:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-07-01 09:43:35,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:35,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135652453] [2021-07-01 09:43:35,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135652453] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:35,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541250638] [2021-07-01 09:43:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 09:43:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:35,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2021-07-01 09:43:35,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 09:43:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-07-01 09:43:36,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541250638] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:36,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 09:43:36,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-07-01 09:43:36,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704283261] [2021-07-01 09:43:36,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 09:43:36,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:36,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 09:43:36,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-01 09:43:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:36,119 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:36,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:43:36,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:36,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:36,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:36,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:36,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:36,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:36,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:36,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:36,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 09:43:36,496 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:36,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:36,497 INFO L82 PathProgramCache]: Analyzing trace with hash 430078426, now seen corresponding path program 2 times [2021-07-01 09:43:36,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:36,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355109052] [2021-07-01 09:43:36,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-07-01 09:43:36,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:36,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355109052] [2021-07-01 09:43:36,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355109052] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:36,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186886980] [2021-07-01 09:43:36,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 09:43:36,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 09:43:36,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 09:43:36,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-01 09:43:36,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 09:43:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-07-01 09:43:36,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186886980] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:36,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 09:43:36,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-07-01 09:43:36,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715900609] [2021-07-01 09:43:36,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-01 09:43:36,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:36,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-01 09:43:36,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-07-01 09:43:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:36,802 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:36,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:43:36,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:36,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:36,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:36,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:36,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:36,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:36,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:36,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:37,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:37,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:37,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 09:43:37,509 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:37,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:37,509 INFO L82 PathProgramCache]: Analyzing trace with hash -470052142, now seen corresponding path program 1 times [2021-07-01 09:43:37,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:37,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418626464] [2021-07-01 09:43:37,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-01 09:43:37,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:37,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418626464] [2021-07-01 09:43:37,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418626464] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:37,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573984656] [2021-07-01 09:43:37,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 09:43:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:37,910 WARN L261 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 81 conjunts are in the unsatisfiable core [2021-07-01 09:43:37,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 09:43:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-01 09:43:38,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573984656] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:38,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 09:43:38,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-07-01 09:43:38,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151924840] [2021-07-01 09:43:38,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 09:43:38,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:38,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 09:43:38,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-07-01 09:43:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:38,053 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:38,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:43:38,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:38,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:38,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:38,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:38,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:38,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:38,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:38,054 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:38,054 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:38,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:38,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 09:43:38,485 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:38,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:38,486 INFO L82 PathProgramCache]: Analyzing trace with hash 317406883, now seen corresponding path program 2 times [2021-07-01 09:43:38,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:38,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517932531] [2021-07-01 09:43:38,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 61 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-07-01 09:43:38,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:38,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517932531] [2021-07-01 09:43:38,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517932531] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:38,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875726103] [2021-07-01 09:43:38,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 09:43:38,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 09:43:38,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 09:43:38,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 62 conjunts are in the unsatisfiable core [2021-07-01 09:43:38,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 09:43:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 61 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-07-01 09:43:39,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875726103] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:39,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 09:43:39,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-07-01 09:43:39,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984402924] [2021-07-01 09:43:39,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-01 09:43:39,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:39,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-01 09:43:39,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-07-01 09:43:39,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:39,096 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:39,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:43:39,096 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:39,096 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:39,096 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:39,096 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:39,096 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:39,096 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:39,096 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:39,096 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:39,096 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:39,096 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:43:40,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 09:43:40,585 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:40,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:40,585 INFO L82 PathProgramCache]: Analyzing trace with hash -751890688, now seen corresponding path program 1 times [2021-07-01 09:43:40,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:40,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532071857] [2021-07-01 09:43:40,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-07-01 09:43:40,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:40,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532071857] [2021-07-01 09:43:40,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532071857] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:40,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881396156] [2021-07-01 09:43:40,727 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 [2021-07-01 09:43:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:40,792 WARN L261 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 145 conjunts are in the unsatisfiable core [2021-07-01 09:43:40,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 09:43:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-07-01 09:43:40,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881396156] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:40,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 09:43:40,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-07-01 09:43:40,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766809502] [2021-07-01 09:43:40,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-01 09:43:40,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:40,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-01 09:43:40,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-01 09:43:40,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:40,971 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:40,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2021-07-01 09:43:40,971 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:40,971 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:40,971 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:40,971 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:40,971 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:40,971 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:40,972 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:40,972 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:40,972 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:40,972 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:43:40,972 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:43:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:41,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-07-01 09:43:41,619 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:41,619 INFO L82 PathProgramCache]: Analyzing trace with hash -970383307, now seen corresponding path program 2 times [2021-07-01 09:43:41,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:41,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614440244] [2021-07-01 09:43:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 183 proven. 66 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-07-01 09:43:41,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:41,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614440244] [2021-07-01 09:43:41,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614440244] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:41,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154116232] [2021-07-01 09:43:41,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2021-07-01 09:43:41,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 09:43:41,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 09:43:41,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 110 conjunts are in the unsatisfiable core [2021-07-01 09:43:41,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 09:43:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 183 proven. 66 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-07-01 09:43:42,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154116232] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:42,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 09:43:42,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-07-01 09:43:42,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971162143] [2021-07-01 09:43:42,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-01 09:43:42,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:42,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-01 09:43:42,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2021-07-01 09:43:42,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:42,156 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:42,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:43:42,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:42,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:42,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:42,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:42,156 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:42,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:42,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:42,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:42,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:42,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:43:42,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:42,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:47,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:43:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:47,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 09:43:48,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-07-01 09:43:48,166 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:48,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:48,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1565951197, now seen corresponding path program 1 times [2021-07-01 09:43:48,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:48,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747314977] [2021-07-01 09:43:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1015 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-07-01 09:43:48,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:48,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747314977] [2021-07-01 09:43:48,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747314977] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:48,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089017204] [2021-07-01 09:43:48,433 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 [2021-07-01 09:43:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:48,538 WARN L261 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 309 conjunts are in the unsatisfiable core [2021-07-01 09:43:48,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 09:43:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1015 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-07-01 09:43:48,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089017204] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:48,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 09:43:48,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-07-01 09:43:48,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577800054] [2021-07-01 09:43:48,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-01 09:43:48,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:48,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-01 09:43:48,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-07-01 09:43:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:48,856 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:48,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:43:48,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:48,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:48,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:48,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:48,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:48,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:48,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:48,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:48,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:48,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:43:48,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:48,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 09:43:48,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:49,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:43:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 09:43:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:43:49,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-07-01 09:43:49,777 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:43:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:43:49,778 INFO L82 PathProgramCache]: Analyzing trace with hash 331495724, now seen corresponding path program 2 times [2021-07-01 09:43:49,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:43:49,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088116870] [2021-07-01 09:43:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:43:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:43:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 723 proven. 309 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2021-07-01 09:43:50,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:43:50,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088116870] [2021-07-01 09:43:50,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088116870] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:50,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554001603] [2021-07-01 09:43:50,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2021-07-01 09:43:50,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 09:43:50,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 09:43:50,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 233 conjunts are in the unsatisfiable core [2021-07-01 09:43:50,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 09:43:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 723 proven. 309 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2021-07-01 09:43:51,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554001603] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:43:51,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 09:43:51,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-07-01 09:43:51,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342201130] [2021-07-01 09:43:51,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-01 09:43:51,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:43:51,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-01 09:43:51,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=105, Unknown=0, NotChecked=0, Total=182 [2021-07-01 09:43:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:43:51,031 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:43:51,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:43:51,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:44:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:44:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:44:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:44:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:44:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:44:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:44:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:44:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:44:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:44:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:44:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:44:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 09:44:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:44:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-01 09:44:16,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-07-01 09:44:16,298 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:44:16,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:44:16,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1491270079, now seen corresponding path program 1 times [2021-07-01 09:44:16,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:44:16,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873583211] [2021-07-01 09:44:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:44:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:44:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4666 backedges. 0 proven. 3586 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2021-07-01 09:44:16,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:44:16,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873583211] [2021-07-01 09:44:16,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873583211] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:44:16,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623949365] [2021-07-01 09:44:16,815 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 [2021-07-01 09:44:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:44:16,983 WARN L261 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 589 conjunts are in the unsatisfiable core [2021-07-01 09:44:16,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 09:44:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4666 backedges. 0 proven. 3586 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2021-07-01 09:44:17,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623949365] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:44:17,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 09:44:17,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-07-01 09:44:17,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912313778] [2021-07-01 09:44:17,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-01 09:44:17,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:44:17,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-01 09:44:17,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-07-01 09:44:17,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:44:17,451 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:44:17,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:44:17,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:44:17,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:44:17,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:44:17,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:44:17,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:44:17,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:44:17,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:44:17,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:44:17,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:44:17,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:44:17,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:44:17,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 09:44:17,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:44:17,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-01 09:44:17,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:44:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:44:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:44:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:44:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:44:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:44:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:44:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:44:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:44:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:44:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:44:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:44:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 09:44:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:44:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-01 09:44:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-01 09:44:19,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 09:44:19,069 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:44:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:44:19,069 INFO L82 PathProgramCache]: Analyzing trace with hash 866907664, now seen corresponding path program 2 times [2021-07-01 09:44:19,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:44:19,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610294443] [2021-07-01 09:44:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:44:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:44:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4672 backedges. 2473 proven. 1152 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2021-07-01 09:44:20,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:44:20,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610294443] [2021-07-01 09:44:20,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610294443] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:44:20,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906268572] [2021-07-01 09:44:20,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2021-07-01 09:44:20,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 09:44:20,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 09:44:20,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 443 conjunts are in the unsatisfiable core [2021-07-01 09:44:20,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 09:44:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4672 backedges. 2473 proven. 1152 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2021-07-01 09:44:21,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906268572] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 09:44:21,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 09:44:21,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-07-01 09:44:21,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569664962] [2021-07-01 09:44:21,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-01 09:44:21,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:44:21,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-01 09:44:21,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-07-01 09:44:21,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 09:44:21,612 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 09:44:21,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 7.0) internal successors, (98), 14 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-01 09:44:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-01 09:44:21,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.