/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-NewStatesSleepPersistentFixedOrder-NoLbe-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-17 12:46:04,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-17 12:46:04,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-17 12:46:04,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-17 12:46:04,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-17 12:46:04,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-17 12:46:04,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-17 12:46:04,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-17 12:46:04,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-17 12:46:04,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-17 12:46:04,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-17 12:46:04,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-17 12:46:04,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-17 12:46:04,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-17 12:46:04,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-17 12:46:04,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-17 12:46:04,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-17 12:46:04,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-17 12:46:04,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-17 12:46:04,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-17 12:46:04,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-17 12:46:04,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-17 12:46:04,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-17 12:46:04,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-17 12:46:04,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... 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[2021-06-17 12:46:04,106 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-NewStatesSleepPersistentFixedOrder-NoLbe-Random42.epf [2021-06-17 12:46:04,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-17 12:46:04,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-17 12:46:04,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-17 12:46:04,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-17 12:46:04,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-17 12:46:04,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-17 12:46:04,153 INFO L138 SettingsManager]: * Use SBE=true [2021-06-17 12:46:04,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-17 12:46:04,153 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-17 12:46:04,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-17 12:46:04,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-17 12:46:04,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-17 12:46:04,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-17 12:46:04,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-17 12:46:04,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-17 12:46:04,154 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-17 12:46:04,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-17 12:46:04,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-17 12:46:04,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-17 12:46:04,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-17 12:46:04,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-17 12:46:04,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-17 12:46:04,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-17 12:46:04,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 12:46:04,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-17 12:46:04,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-17 12:46:04,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-17 12:46:04,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-17 12:46:04,156 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-17 12:46:04,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-17 12:46:04,156 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-17 12:46:04,156 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-17 12:46:04,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-17 12:46:04,156 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-17 12:46:04,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-17 12:46:04,156 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-17 12:46:04,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-17 12:46:04,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-17 12:46:04,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-17 12:46:04,422 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-17 12:46:04,423 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-17 12:46:04,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl [2021-06-17 12:46:04,423 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl' [2021-06-17 12:46:04,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-17 12:46:04,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-17 12:46:04,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-17 12:46:04,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-17 12:46:04,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-17 12:46:04,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:46:04" (1/1) ... [2021-06-17 12:46:04,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:46:04" (1/1) ... [2021-06-17 12:46:04,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-17 12:46:04,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-17 12:46:04,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-17 12:46:04,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-17 12:46:04,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:46:04" (1/1) ... [2021-06-17 12:46:04,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:46:04" (1/1) ... [2021-06-17 12:46:04,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:46:04" (1/1) ... [2021-06-17 12:46:04,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:46:04" (1/1) ... [2021-06-17 12:46:04,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:46:04" (1/1) ... [2021-06-17 12:46:04,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:46:04" (1/1) ... [2021-06-17 12:46:04,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:46:04" (1/1) ... [2021-06-17 12:46:04,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-17 12:46:04,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-17 12:46:04,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-17 12:46:04,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-17 12:46:04,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:46:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 12:46:04,540 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-06-17 12:46:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-06-17 12:46:04,540 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-06-17 12:46:04,540 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-06-17 12:46:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-06-17 12:46:04,541 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-06-17 12:46:04,541 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-17 12:46:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-17 12:46:04,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-17 12:46:04,541 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-06-17 12:46:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-06-17 12:46:04,541 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-06-17 12:46:04,542 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-17 12:46:04,665 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-17 12:46:04,665 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-06-17 12:46:04,666 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 12:46:04 BoogieIcfgContainer [2021-06-17 12:46:04,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-17 12:46:04,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-17 12:46:04,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-17 12:46:04,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-17 12:46:04,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:46:04" (1/2) ... [2021-06-17 12:46:04,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26aee40 and model type Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.06 12:46:04, skipping insertion in model container [2021-06-17 12:46:04,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 12:46:04" (2/2) ... [2021-06-17 12:46:04,671 INFO L111 eAbstractionObserver]: Analyzing ICFG Fischer.bpl [2021-06-17 12:46:04,674 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-17 12:46:04,675 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-17 12:46:04,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-17 12:46:04,675 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-17 12:46:04,696 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,697 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,697 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,697 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,698 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,698 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,698 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,698 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,699 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,699 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,700 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,700 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,700 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,700 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,701 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,701 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,705 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,706 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-17 12:46:04,707 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-17 12:46:04,721 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-17 12:46:04,757 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 12:46:04,757 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 12:46:04,757 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 12:46:04,757 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 12:46:04,758 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 12:46:04,758 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 12:46:04,758 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 12:46:04,758 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == Process2Thread1of1ForFork2======== [2021-06-17 12:46:04,864 INFO L430 AbstractCegarLoop]: === Iteration 1 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:04,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:04,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1226378712, now seen corresponding path program 1 times [2021-06-17 12:46:04,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:04,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208146053] [2021-06-17 12:46:04,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 12:46:04,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:04,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208146053] [2021-06-17 12:46:04,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208146053] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 12:46:04,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 12:46:04,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-17 12:46:04,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294972867] [2021-06-17 12:46:04,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-17 12:46:04,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:05,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-17 12:46:05,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-17 12:46:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,003 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:05,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:05,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-17 12:46:05,061 INFO L430 AbstractCegarLoop]: === Iteration 2 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:05,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:05,064 INFO L82 PathProgramCache]: Analyzing trace with hash 419790827, now seen corresponding path program 1 times [2021-06-17 12:46:05,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:05,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984023344] [2021-06-17 12:46:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 12:46:05,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:05,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984023344] [2021-06-17 12:46:05,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984023344] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 12:46:05,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 12:46:05,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-17 12:46:05,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249110031] [2021-06-17 12:46:05,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-17 12:46:05,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:05,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-17 12:46:05,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-17 12:46:05,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,122 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:05,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:05,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-17 12:46:05,310 INFO L430 AbstractCegarLoop]: === Iteration 3 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:05,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:05,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1935312842, now seen corresponding path program 1 times [2021-06-17 12:46:05,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:05,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586025764] [2021-06-17 12:46:05,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-06-17 12:46:05,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:05,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586025764] [2021-06-17 12:46:05,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586025764] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 12:46:05,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 12:46:05,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-17 12:46:05,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95908902] [2021-06-17 12:46:05,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-17 12:46:05,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:05,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-17 12:46:05,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-17 12:46:05,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,354 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:05,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:05,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-17 12:46:05,594 INFO L430 AbstractCegarLoop]: === Iteration 4 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:05,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:05,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1389990317, now seen corresponding path program 1 times [2021-06-17 12:46:05,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:05,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076004841] [2021-06-17 12:46:05,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-06-17 12:46:05,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:05,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076004841] [2021-06-17 12:46:05,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076004841] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 12:46:05,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 12:46:05,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-17 12:46:05,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435567335] [2021-06-17 12:46:05,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-17 12:46:05,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:05,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-17 12:46:05,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-17 12:46:05,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,657 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:05,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:05,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-17 12:46:05,781 INFO L430 AbstractCegarLoop]: === Iteration 5 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:05,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:05,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1117268270, now seen corresponding path program 2 times [2021-06-17 12:46:05,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:05,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484884800] [2021-06-17 12:46:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-06-17 12:46:05,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:05,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484884800] [2021-06-17 12:46:05,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484884800] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 12:46:05,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 12:46:05,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-17 12:46:05,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556078864] [2021-06-17 12:46:05,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-17 12:46:05,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:05,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-17 12:46:05,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-17 12:46:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,803 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:05,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:05,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:05,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-17 12:46:05,970 INFO L430 AbstractCegarLoop]: === Iteration 6 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:05,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:05,971 INFO L82 PathProgramCache]: Analyzing trace with hash 242707077, now seen corresponding path program 3 times [2021-06-17 12:46:05,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:05,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164293597] [2021-06-17 12:46:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-06-17 12:46:06,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:06,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164293597] [2021-06-17 12:46:06,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164293597] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 12:46:06,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 12:46:06,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-17 12:46:06,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955740453] [2021-06-17 12:46:06,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-17 12:46:06,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:06,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-17 12:46:06,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-17 12:46:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:06,044 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:06,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:06,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:06,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-17 12:46:06,172 INFO L430 AbstractCegarLoop]: === Iteration 7 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:06,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:06,173 INFO L82 PathProgramCache]: Analyzing trace with hash 128582089, now seen corresponding path program 4 times [2021-06-17 12:46:06,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:06,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50576522] [2021-06-17 12:46:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-06-17 12:46:06,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:06,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50576522] [2021-06-17 12:46:06,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50576522] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 12:46:06,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 12:46:06,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-17 12:46:06,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567198387] [2021-06-17 12:46:06,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-17 12:46:06,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:06,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-17 12:46:06,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-17 12:46:06,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:06,225 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:06,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:06,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:06,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,226 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,226 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:06,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-17 12:46:06,397 INFO L430 AbstractCegarLoop]: === Iteration 8 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:06,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:06,397 INFO L82 PathProgramCache]: Analyzing trace with hash 595706385, now seen corresponding path program 5 times [2021-06-17 12:46:06,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:06,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280842635] [2021-06-17 12:46:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-06-17 12:46:06,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:06,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280842635] [2021-06-17 12:46:06,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280842635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:06,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005020430] [2021-06-17 12:46:06,516 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:06,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-17 12:46:06,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 12:46:06,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-17 12:46:06,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 124 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-17 12:46:06,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005020430] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:06,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:06,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2021-06-17 12:46:06,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848647391] [2021-06-17 12:46:06,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-17 12:46:06,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:06,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-17 12:46:06,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-06-17 12:46:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:06,785 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:06,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 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) [2021-06-17 12:46:06,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:06,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:06,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:06,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-17 12:46:08,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:08,317 INFO L430 AbstractCegarLoop]: === Iteration 9 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:08,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:08,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1225383172, now seen corresponding path program 6 times [2021-06-17 12:46:08,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:08,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076451950] [2021-06-17 12:46:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 194 proven. 1 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-06-17 12:46:08,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:08,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076451950] [2021-06-17 12:46:08,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076451950] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:08,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631825385] [2021-06-17 12:46:08,357 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:08,387 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-17 12:46:08,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 12:46:08,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-17 12:46:08,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-06-17 12:46:08,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631825385] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:08,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:08,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8] total 9 [2021-06-17 12:46:08,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124403531] [2021-06-17 12:46:08,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-17 12:46:08,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:08,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-17 12:46:08,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-17 12:46:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:08,573 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:08,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:08,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:08,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:08,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:08,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:08,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:08,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:08,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:08,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2021-06-17 12:46:08,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:09,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:09,598 INFO L430 AbstractCegarLoop]: === Iteration 10 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:09,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:09,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2025959491, now seen corresponding path program 7 times [2021-06-17 12:46:09,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:09,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703907115] [2021-06-17 12:46:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 93 proven. 198 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-06-17 12:46:09,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:09,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703907115] [2021-06-17 12:46:09,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703907115] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:09,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765018239] [2021-06-17 12:46:09,655 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:09,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-17 12:46:09,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 277 proven. 91 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-06-17 12:46:09,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765018239] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:09,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:09,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 11 [2021-06-17 12:46:09,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867146926] [2021-06-17 12:46:09,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-17 12:46:09,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-17 12:46:09,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-06-17 12:46:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:09,889 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:09,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:09,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:09,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:09,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:09,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:09,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:09,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:09,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:09,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:09,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:09,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:11,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:11,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-17 12:46:11,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:11,446 INFO L430 AbstractCegarLoop]: === Iteration 11 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:11,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:11,446 INFO L82 PathProgramCache]: Analyzing trace with hash -322092041, now seen corresponding path program 8 times [2021-06-17 12:46:11,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:11,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596970994] [2021-06-17 12:46:11,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 337 proven. 130 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2021-06-17 12:46:11,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:11,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596970994] [2021-06-17 12:46:11,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596970994] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:11,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508721422] [2021-06-17 12:46:11,511 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 [2021-06-17 12:46:11,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-17 12:46:11,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 12:46:11,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-17 12:46:11,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 159 proven. 6 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-06-17 12:46:11,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508721422] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:11,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:11,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 13 [2021-06-17 12:46:11,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969413642] [2021-06-17 12:46:11,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-17 12:46:11,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:11,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-17 12:46:11,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-06-17 12:46:11,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:11,786 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:11,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:11,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:11,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:11,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:11,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:11,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:11,787 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:11,787 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:11,787 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:11,787 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:11,787 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2021-06-17 12:46:11,787 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:12,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:12,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-06-17 12:46:12,898 INFO L430 AbstractCegarLoop]: === Iteration 12 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:12,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:12,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1743742485, now seen corresponding path program 9 times [2021-06-17 12:46:12,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:12,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129722000] [2021-06-17 12:46:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 575 proven. 327 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2021-06-17 12:46:12,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:12,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129722000] [2021-06-17 12:46:12,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129722000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:12,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950308673] [2021-06-17 12:46:12,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:13,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-17 12:46:13,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 12:46:13,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-17 12:46:13,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 328 proven. 398 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2021-06-17 12:46:13,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950308673] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:13,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:13,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-17 12:46:13,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161717182] [2021-06-17 12:46:13,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-17 12:46:13,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:13,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-17 12:46:13,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-06-17 12:46:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:13,259 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:13,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:13,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:13,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:13,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:13,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:13,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:13,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:13,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:13,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:13,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:13,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:13,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:13,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:14,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:14,673 INFO L430 AbstractCegarLoop]: === Iteration 13 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash -651820985, now seen corresponding path program 10 times [2021-06-17 12:46:14,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:14,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428574155] [2021-06-17 12:46:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 797 proven. 191 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2021-06-17 12:46:14,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:14,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428574155] [2021-06-17 12:46:14,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428574155] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:14,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651847404] [2021-06-17 12:46:14,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2021-06-17 12:46:14,852 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-17 12:46:14,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 12:46:14,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-17 12:46:14,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 797 proven. 191 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2021-06-17 12:46:15,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651847404] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:15,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:15,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-06-17 12:46:15,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134455113] [2021-06-17 12:46:15,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-17 12:46:15,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:15,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-17 12:46:15,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-17 12:46:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:15,047 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:15,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:15,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:15,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:15,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:15,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:15,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:15,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:15,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:15,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:15,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:15,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:15,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:15,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:15,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:16,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-17 12:46:16,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:16,411 INFO L430 AbstractCegarLoop]: === Iteration 14 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:16,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:16,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1327934885, now seen corresponding path program 11 times [2021-06-17 12:46:16,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:16,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836495022] [2021-06-17 12:46:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 289 proven. 484 refuted. 0 times theorem prover too weak. 1091 trivial. 0 not checked. [2021-06-17 12:46:16,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:16,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836495022] [2021-06-17 12:46:16,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836495022] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:16,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587468665] [2021-06-17 12:46:16,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2021-06-17 12:46:16,569 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-17 12:46:16,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 12:46:16,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-17 12:46:16,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 978 proven. 302 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-06-17 12:46:16,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587468665] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:16,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:16,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 15 [2021-06-17 12:46:16,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513446220] [2021-06-17 12:46:16,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-17 12:46:16,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:16,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-17 12:46:16,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-17 12:46:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:16,772 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:16,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:16,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:16,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:16,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:16,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:16,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:16,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:16,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:16,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:16,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:16,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:16,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:16,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:16,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-06-17 12:46:16,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-17 12:46:19,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-17 12:46:19,085 INFO L430 AbstractCegarLoop]: === Iteration 15 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:19,086 INFO L82 PathProgramCache]: Analyzing trace with hash 442459413, now seen corresponding path program 12 times [2021-06-17 12:46:19,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:19,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862814634] [2021-06-17 12:46:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 1285 proven. 233 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2021-06-17 12:46:19,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:19,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862814634] [2021-06-17 12:46:19,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862814634] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:19,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755213506] [2021-06-17 12:46:19,182 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:19,237 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-17 12:46:19,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 12:46:19,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-17 12:46:19,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 1057 proven. 772 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-06-17 12:46:19,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755213506] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:19,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:19,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 15 [2021-06-17 12:46:19,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871662413] [2021-06-17 12:46:19,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-17 12:46:19,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:19,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-17 12:46:19,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-06-17 12:46:19,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:19,480 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:19,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:19,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:19,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-17 12:46:19,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:20,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-17 12:46:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 12:46:20,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-17 12:46:20,792 INFO L430 AbstractCegarLoop]: === Iteration 16 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:20,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:20,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1297633634, now seen corresponding path program 13 times [2021-06-17 12:46:20,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:20,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749690941] [2021-06-17 12:46:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 1542 proven. 212 refuted. 0 times theorem prover too weak. 1249 trivial. 0 not checked. [2021-06-17 12:46:20,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:20,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749690941] [2021-06-17 12:46:20,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749690941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:20,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91377705] [2021-06-17 12:46:20,870 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:20,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-17 12:46:20,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 592 proven. 23 refuted. 0 times theorem prover too weak. 2388 trivial. 0 not checked. [2021-06-17 12:46:21,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91377705] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:21,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:21,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 16 [2021-06-17 12:46:21,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931354166] [2021-06-17 12:46:21,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-17 12:46:21,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:21,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-17 12:46:21,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-17 12:46:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:21,145 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:21,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-17 12:46:21,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-17 12:46:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 12:46:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-17 12:46:22,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-17 12:46:22,212 INFO L430 AbstractCegarLoop]: === Iteration 17 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:22,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:22,212 INFO L82 PathProgramCache]: Analyzing trace with hash -133993150, now seen corresponding path program 14 times [2021-06-17 12:46:22,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:22,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108421253] [2021-06-17 12:46:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3313 backedges. 1695 proven. 187 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-06-17 12:46:22,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:22,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108421253] [2021-06-17 12:46:22,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108421253] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:22,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208728911] [2021-06-17 12:46:22,266 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 [2021-06-17 12:46:22,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-17 12:46:22,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 12:46:22,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-17 12:46:22,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3313 backedges. 1238 proven. 101 refuted. 0 times theorem prover too weak. 1974 trivial. 0 not checked. [2021-06-17 12:46:22,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208728911] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:22,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:22,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 15 [2021-06-17 12:46:22,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092204856] [2021-06-17 12:46:22,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-17 12:46:22,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:22,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-17 12:46:22,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-06-17 12:46:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:22,536 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:22,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 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) [2021-06-17 12:46:22,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-17 12:46:22,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-17 12:46:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 12:46:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-17 12:46:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-17 12:46:24,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-17 12:46:24,159 INFO L430 AbstractCegarLoop]: === Iteration 18 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1747382956, now seen corresponding path program 15 times [2021-06-17 12:46:24,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:24,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627346315] [2021-06-17 12:46:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 679 proven. 1404 refuted. 0 times theorem prover too weak. 1391 trivial. 0 not checked. [2021-06-17 12:46:24,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:24,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627346315] [2021-06-17 12:46:24,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627346315] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:24,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055361502] [2021-06-17 12:46:24,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:24,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-17 12:46:24,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 12:46:24,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-17 12:46:24,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 950 proven. 1144 refuted. 0 times theorem prover too weak. 1380 trivial. 0 not checked. [2021-06-17 12:46:24,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055361502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:24,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:24,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-06-17 12:46:24,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915381638] [2021-06-17 12:46:24,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-17 12:46:24,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:24,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-17 12:46:24,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2021-06-17 12:46:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:24,639 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:24,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:24,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-17 12:46:24,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-17 12:46:24,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-17 12:46:24,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2021-06-17 12:46:24,640 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:25,864 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-17 12:46:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 12:46:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-17 12:46:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-17 12:46:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-06-17 12:46:27,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-17 12:46:27,665 INFO L430 AbstractCegarLoop]: === Iteration 19 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:27,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:27,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1650768401, now seen corresponding path program 16 times [2021-06-17 12:46:27,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:27,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491801785] [2021-06-17 12:46:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4248 backedges. 2165 proven. 256 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2021-06-17 12:46:27,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:27,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491801785] [2021-06-17 12:46:27,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491801785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:27,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517101437] [2021-06-17 12:46:27,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:27,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-17 12:46:27,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 12:46:27,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-17 12:46:27,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4248 backedges. 2155 proven. 480 refuted. 0 times theorem prover too weak. 1613 trivial. 0 not checked. [2021-06-17 12:46:28,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517101437] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:28,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:28,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16] total 20 [2021-06-17 12:46:28,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440038234] [2021-06-17 12:46:28,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-17 12:46:28,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:28,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-17 12:46:28,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-06-17 12:46:28,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:28,074 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:28,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 6.0) internal successors, (120), 20 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 92 states. [2021-06-17 12:46:28,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-06-17 12:46:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-06-17 12:46:32,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:32,538 INFO L430 AbstractCegarLoop]: === Iteration 20 === [Process2Err0ASSERT_VIOLATIONASSERT]=== [2021-06-17 12:46:32,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 12:46:32,539 INFO L82 PathProgramCache]: Analyzing trace with hash 75574358, now seen corresponding path program 17 times [2021-06-17 12:46:32,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 12:46:32,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305965990] [2021-06-17 12:46:32,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 12:46:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 12:46:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4524 backedges. 2304 proven. 221 refuted. 0 times theorem prover too weak. 1999 trivial. 0 not checked. [2021-06-17 12:46:32,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 12:46:32,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305965990] [2021-06-17 12:46:32,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305965990] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:32,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445938669] [2021-06-17 12:46:32,573 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 12:46:32,655 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-06-17 12:46:32,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 12:46:32,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-17 12:46:32,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 12:46:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4524 backedges. 791 proven. 1184 refuted. 0 times theorem prover too weak. 2549 trivial. 0 not checked. [2021-06-17 12:46:32,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445938669] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 12:46:32,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 12:46:32,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 16] total 18 [2021-06-17 12:46:32,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821957812] [2021-06-17 12:46:32,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-17 12:46:32,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 12:46:32,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-17 12:46:32,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-17 12:46:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:32,962 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 12:46:32,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 12:46:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 12:46:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 12:46:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 12:46:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-17 12:46:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-06-17 12:46:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-17 12:46:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2021-06-17 12:46:32,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 52 states. [2021-06-17 12:46:32,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-17 12:46:32,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-17 12:46:32,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-17 12:46:32,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2021-06-17 12:46:32,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 92 states. [2021-06-17 12:46:32,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 128 states. [2021-06-17 12:46:32,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.