/usr/bin/java -Xmx16000000000 -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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/NonAtomicIncrement_2Threads_Loop.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 03:09:26,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 03:09:26,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 03:09:26,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 03:09:26,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 03:09:26,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 03:09:26,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 03:09:26,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 03:09:26,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 03:09:26,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 03:09:26,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 03:09:26,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 03:09:26,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 03:09:26,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 03:09:26,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 03:09:26,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 03:09:26,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 03:09:26,991 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-FA-NoLbe.epf [2021-06-05 03:09:27,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 03:09:27,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 03:09:27,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 03:09:27,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 03:09:27,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 03:09:27,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 03:09:27,029 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 03:09:27,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 03:09:27,030 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 03:09:27,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 03:09:27,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 03:09:27,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 03:09:27,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 03:09:27,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 03:09:27,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 03:09:27,031 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 03:09:27,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 03:09:27,032 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 03:09:27,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 03:09:27,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 03:09:27,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 03:09:27,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 03:09:27,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 03:09:27,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 03:09:27,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 03:09:27,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 03:09:27,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 03:09:27,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 03:09:27,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 03:09:27,034 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 03:09:27,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 03:09:27,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 03:09:27,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 03:09:27,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 03:09:27,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 03:09:27,381 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 03:09:27,382 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 03:09:27,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/NonAtomicIncrement_2Threads_Loop.bpl [2021-06-05 03:09:27,383 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/NonAtomicIncrement_2Threads_Loop.bpl' [2021-06-05 03:09:27,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 03:09:27,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 03:09:27,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 03:09:27,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 03:09:27,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 03:09:27,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:27" (1/1) ... [2021-06-05 03:09:27,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:27" (1/1) ... [2021-06-05 03:09:27,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 03:09:27,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 03:09:27,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 03:09:27,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 03:09:27,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:27" (1/1) ... [2021-06-05 03:09:27,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:27" (1/1) ... [2021-06-05 03:09:27,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:27" (1/1) ... [2021-06-05 03:09:27,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:27" (1/1) ... [2021-06-05 03:09:27,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:27" (1/1) ... [2021-06-05 03:09:27,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:27" (1/1) ... [2021-06-05 03:09:27,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:27" (1/1) ... [2021-06-05 03:09:27,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 03:09:27,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 03:09:27,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 03:09:27,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 03:09:27,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:27" (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 [2021-06-05 03:09:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure fistIncrementProcess [2021-06-05 03:09:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure fistIncrementProcess [2021-06-05 03:09:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 03:09:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 03:09:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrementProcess [2021-06-05 03:09:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrementProcess [2021-06-05 03:09:27,540 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 03:09:27,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 03:09:27,701 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 03:09:27,703 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:09:27 BoogieIcfgContainer [2021-06-05 03:09:27,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 03:09:27,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 03:09:27,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 03:09:27,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 03:09:27,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:09:27" (1/2) ... [2021-06-05 03:09:27,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db37f97 and model type NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:09:27, skipping insertion in model container [2021-06-05 03:09:27,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:09:27" (2/2) ... [2021-06-05 03:09:27,710 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads_Loop.bpl [2021-06-05 03:09:27,718 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 03:09:27,719 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 03:09:27,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 03:09:27,720 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 03:09:27,767 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,768 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,768 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,768 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,768 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,768 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,769 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,769 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,769 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,769 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,770 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,770 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,770 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,770 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,770 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,771 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,771 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,771 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,771 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,771 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,772 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,772 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,772 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,772 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,773 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,773 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,773 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,773 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,775 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,775 WARN L313 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,788 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,789 WARN L313 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:09:27,794 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-05 03:09:27,813 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 03:09:27,830 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:09:27,830 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:09:27,830 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:09:27,830 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:09:27,831 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:09:27,831 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:09:27,831 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:09:27,831 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:09:27,839 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 74 flow [2021-06-05 03:09:27,859 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 76 states, 74 states have (on average 1.9864864864864864) internal successors, (147), 75 states have internal predecessors, (147), 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) [2021-06-05 03:09:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.9864864864864864) internal successors, (147), 75 states have internal predecessors, (147), 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) [2021-06-05 03:09:27,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:09:27,867 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:27,868 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:27,868 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:27,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:27,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1220513213, now seen corresponding path program 1 times [2021-06-05 03:09:27,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:27,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893494384] [2021-06-05 03:09:27,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:27,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:27,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893494384] [2021-06-05 03:09:27,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893494384] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:09:27,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:09:27,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:09:27,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250544886] [2021-06-05 03:09:27,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:09:27,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:27,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:09:27,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:09:27,996 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.9864864864864864) internal successors, (147), 75 states have internal predecessors, (147), 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) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-06-05 03:09:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:28,024 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2021-06-05 03:09:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:09:28,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Word has length 12 [2021-06-05 03:09:28,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:28,034 INFO L225 Difference]: With dead ends: 112 [2021-06-05 03:09:28,034 INFO L226 Difference]: Without dead ends: 110 [2021-06-05 03:09:28,036 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:09:28,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-06-05 03:09:28,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 83. [2021-06-05 03:09:28,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.9878048780487805) internal successors, (163), 82 states have internal predecessors, (163), 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) [2021-06-05 03:09:28,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 163 transitions. [2021-06-05 03:09:28,070 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 163 transitions. Word has length 12 [2021-06-05 03:09:28,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:28,071 INFO L482 AbstractCegarLoop]: Abstraction has 83 states and 163 transitions. [2021-06-05 03:09:28,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-06-05 03:09:28,071 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 163 transitions. [2021-06-05 03:09:28,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 03:09:28,072 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:28,072 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:28,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 03:09:28,073 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:28,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:28,073 INFO L82 PathProgramCache]: Analyzing trace with hash 494030054, now seen corresponding path program 1 times [2021-06-05 03:09:28,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:28,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009312161] [2021-06-05 03:09:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:28,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:28,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009312161] [2021-06-05 03:09:28,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009312161] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:28,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617332670] [2021-06-05 03:09:28,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:09:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:28,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-06-05 03:09:28,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:09:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:09:28,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617332670] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:09:28,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 03:09:28,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-06-05 03:09:28,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444032466] [2021-06-05 03:09:28,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:09:28,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:28,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:09:28,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 03:09:28,207 INFO L87 Difference]: Start difference. First operand 83 states and 163 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-06-05 03:09:28,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:28,222 INFO L93 Difference]: Finished difference Result 119 states and 235 transitions. [2021-06-05 03:09:28,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:09:28,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) Word has length 16 [2021-06-05 03:09:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:28,225 INFO L225 Difference]: With dead ends: 119 [2021-06-05 03:09:28,225 INFO L226 Difference]: Without dead ends: 119 [2021-06-05 03:09:28,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 03:09:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-06-05 03:09:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 92. [2021-06-05 03:09:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.989010989010989) internal successors, (181), 91 states have internal predecessors, (181), 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) [2021-06-05 03:09:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 181 transitions. [2021-06-05 03:09:28,242 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 181 transitions. Word has length 16 [2021-06-05 03:09:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:28,242 INFO L482 AbstractCegarLoop]: Abstraction has 92 states and 181 transitions. [2021-06-05 03:09:28,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-06-05 03:09:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 181 transitions. [2021-06-05 03:09:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 03:09:28,244 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:28,244 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:28,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-06-05 03:09:28,468 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:28,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:28,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1490798487, now seen corresponding path program 1 times [2021-06-05 03:09:28,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:28,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369327840] [2021-06-05 03:09:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:28,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:09:28,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:28,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369327840] [2021-06-05 03:09:28,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369327840] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:28,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668676583] [2021-06-05 03:09:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:09:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:28,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-06-05 03:09:28,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:09:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:09:28,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668676583] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:28,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:09:28,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-06-05 03:09:28,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310821995] [2021-06-05 03:09:28,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 03:09:28,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:28,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 03:09:28,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 03:09:28,652 INFO L87 Difference]: Start difference. First operand 92 states and 181 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-06-05 03:09:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:28,681 INFO L93 Difference]: Finished difference Result 162 states and 321 transitions. [2021-06-05 03:09:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 03:09:28,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) Word has length 20 [2021-06-05 03:09:28,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:28,684 INFO L225 Difference]: With dead ends: 162 [2021-06-05 03:09:28,684 INFO L226 Difference]: Without dead ends: 162 [2021-06-05 03:09:28,685 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 03:09:28,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-06-05 03:09:28,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 132. [2021-06-05 03:09:28,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.9923664122137406) internal successors, (261), 131 states have internal predecessors, (261), 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) [2021-06-05 03:09:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 261 transitions. [2021-06-05 03:09:28,702 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 261 transitions. Word has length 20 [2021-06-05 03:09:28,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:28,702 INFO L482 AbstractCegarLoop]: Abstraction has 132 states and 261 transitions. [2021-06-05 03:09:28,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-06-05 03:09:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 261 transitions. [2021-06-05 03:09:28,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 03:09:28,703 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:28,704 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:28,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:09:28,916 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:28,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:28,917 INFO L82 PathProgramCache]: Analyzing trace with hash -336674260, now seen corresponding path program 2 times [2021-06-05 03:09:28,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:28,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403520606] [2021-06-05 03:09:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-05 03:09:28,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:28,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403520606] [2021-06-05 03:09:28,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403520606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:28,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045828033] [2021-06-05 03:09:28,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:09:28,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:09:28,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:09:28,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 03:09:28,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:09:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:09:29,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045828033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:29,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:09:29,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-06-05 03:09:29,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63027207] [2021-06-05 03:09:29,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:09:29,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:29,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:09:29,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:09:29,046 INFO L87 Difference]: Start difference. First operand 132 states and 261 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:29,168 INFO L93 Difference]: Finished difference Result 291 states and 579 transitions. [2021-06-05 03:09:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 03:09:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 03:09:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:29,173 INFO L225 Difference]: With dead ends: 291 [2021-06-05 03:09:29,174 INFO L226 Difference]: Without dead ends: 291 [2021-06-05 03:09:29,174 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 65.6ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-06-05 03:09:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-06-05 03:09:29,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 240. [2021-06-05 03:09:29,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.99581589958159) internal successors, (477), 239 states have internal predecessors, (477), 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) [2021-06-05 03:09:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 477 transitions. [2021-06-05 03:09:29,242 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 477 transitions. Word has length 24 [2021-06-05 03:09:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:29,243 INFO L482 AbstractCegarLoop]: Abstraction has 240 states and 477 transitions. [2021-06-05 03:09:29,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 477 transitions. [2021-06-05 03:09:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-06-05 03:09:29,257 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:29,257 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:29,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:09:29,477 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:29,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1232424590, now seen corresponding path program 3 times [2021-06-05 03:09:29,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:29,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669817178] [2021-06-05 03:09:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-06-05 03:09:29,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:29,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669817178] [2021-06-05 03:09:29,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669817178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:29,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218853041] [2021-06-05 03:09:29,535 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 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 [2021-06-05 03:09:29,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 03:09:29,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:09:29,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 03:09:29,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:09:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-06-05 03:09:29,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218853041] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:29,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:09:29,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-06-05 03:09:29,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627445198] [2021-06-05 03:09:29,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 03:09:29,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:29,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 03:09:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-05 03:09:29,667 INFO L87 Difference]: Start difference. First operand 240 states and 477 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:29,689 INFO L93 Difference]: Finished difference Result 308 states and 613 transitions. [2021-06-05 03:09:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 03:09:29,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-06-05 03:09:29,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:29,697 INFO L225 Difference]: With dead ends: 308 [2021-06-05 03:09:29,697 INFO L226 Difference]: Without dead ends: 308 [2021-06-05 03:09:29,697 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-05 03:09:29,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-06-05 03:09:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-06-05 03:09:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.996742671009772) internal successors, (613), 307 states have internal predecessors, (613), 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) [2021-06-05 03:09:29,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 613 transitions. [2021-06-05 03:09:29,710 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 613 transitions. Word has length 32 [2021-06-05 03:09:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:29,711 INFO L482 AbstractCegarLoop]: Abstraction has 308 states and 613 transitions. [2021-06-05 03:09:29,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 613 transitions. [2021-06-05 03:09:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 03:09:29,713 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:29,713 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:29,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:09:29,935 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:29,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:29,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2099214069, now seen corresponding path program 4 times [2021-06-05 03:09:29,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:29,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693004970] [2021-06-05 03:09:29,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:30,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:30,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693004970] [2021-06-05 03:09:30,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693004970] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:09:30,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:09:30,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-05 03:09:30,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508279485] [2021-06-05 03:09:30,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 03:09:30,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:30,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 03:09:30,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-05 03:09:30,114 INFO L87 Difference]: Start difference. First operand 308 states and 613 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:30,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:30,431 INFO L93 Difference]: Finished difference Result 1129 states and 2254 transitions. [2021-06-05 03:09:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 03:09:30,432 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 03:09:30,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:30,435 INFO L225 Difference]: With dead ends: 1129 [2021-06-05 03:09:30,435 INFO L226 Difference]: Without dead ends: 572 [2021-06-05 03:09:30,435 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 235.6ms TimeCoverageRelationStatistics Valid=278, Invalid=534, Unknown=0, NotChecked=0, Total=812 [2021-06-05 03:09:30,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-06-05 03:09:30,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 365. [2021-06-05 03:09:30,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.9752747252747254) internal successors, (719), 364 states have internal predecessors, (719), 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) [2021-06-05 03:09:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 719 transitions. [2021-06-05 03:09:30,449 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 719 transitions. Word has length 36 [2021-06-05 03:09:30,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:30,449 INFO L482 AbstractCegarLoop]: Abstraction has 365 states and 719 transitions. [2021-06-05 03:09:30,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:30,449 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 719 transitions. [2021-06-05 03:09:30,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 03:09:30,457 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:30,457 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:30,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 03:09:30,457 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:30,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:30,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1439417367, now seen corresponding path program 5 times [2021-06-05 03:09:30,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:30,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206131813] [2021-06-05 03:09:30,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:30,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:30,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206131813] [2021-06-05 03:09:30,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206131813] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:30,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092880374] [2021-06-05 03:09:30,608 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 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 [2021-06-05 03:09:30,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 03:09:30,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:09:30,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 03:09:30,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:09:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:30,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092880374] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:30,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:09:30,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-05 03:09:30,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766233559] [2021-06-05 03:09:30,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 03:09:30,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:30,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 03:09:30,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 03:09:30,764 INFO L87 Difference]: Start difference. First operand 365 states and 719 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:31,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:31,018 INFO L93 Difference]: Finished difference Result 1051 states and 2075 transitions. [2021-06-05 03:09:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 03:09:31,019 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 03:09:31,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:31,021 INFO L225 Difference]: With dead ends: 1051 [2021-06-05 03:09:31,021 INFO L226 Difference]: Without dead ends: 491 [2021-06-05 03:09:31,022 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 196.2ms TimeCoverageRelationStatistics Valid=208, Invalid=392, Unknown=0, NotChecked=0, Total=600 [2021-06-05 03:09:31,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-06-05 03:09:31,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 331. [2021-06-05 03:09:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.9545454545454546) internal successors, (645), 330 states have internal predecessors, (645), 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) [2021-06-05 03:09:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 645 transitions. [2021-06-05 03:09:31,031 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 645 transitions. Word has length 36 [2021-06-05 03:09:31,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:31,031 INFO L482 AbstractCegarLoop]: Abstraction has 331 states and 645 transitions. [2021-06-05 03:09:31,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 645 transitions. [2021-06-05 03:09:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 03:09:31,032 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:31,032 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:31,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-05 03:09:31,254 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:31,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:31,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1486001743, now seen corresponding path program 6 times [2021-06-05 03:09:31,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:31,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176628482] [2021-06-05 03:09:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:31,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:31,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176628482] [2021-06-05 03:09:31,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176628482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:31,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273285582] [2021-06-05 03:09:31,358 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 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 [2021-06-05 03:09:31,384 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 03:09:31,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:09:31,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 03:09:31,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:09:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:31,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273285582] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:31,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:09:31,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-05 03:09:31,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724968709] [2021-06-05 03:09:31,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 03:09:31,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:31,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 03:09:31,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 03:09:31,474 INFO L87 Difference]: Start difference. First operand 331 states and 645 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:31,712 INFO L93 Difference]: Finished difference Result 1357 states and 2666 transitions. [2021-06-05 03:09:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 03:09:31,713 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 03:09:31,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:31,718 INFO L225 Difference]: With dead ends: 1357 [2021-06-05 03:09:31,718 INFO L226 Difference]: Without dead ends: 1011 [2021-06-05 03:09:31,718 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 174.4ms TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2021-06-05 03:09:31,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-06-05 03:09:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 550. [2021-06-05 03:09:31,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 1.97632058287796) internal successors, (1085), 549 states have internal predecessors, (1085), 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) [2021-06-05 03:09:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1085 transitions. [2021-06-05 03:09:31,736 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1085 transitions. Word has length 36 [2021-06-05 03:09:31,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:31,739 INFO L482 AbstractCegarLoop]: Abstraction has 550 states and 1085 transitions. [2021-06-05 03:09:31,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1085 transitions. [2021-06-05 03:09:31,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 03:09:31,740 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:31,740 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:31,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:09:31,957 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:31,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:31,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1592559793, now seen corresponding path program 7 times [2021-06-05 03:09:31,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:31,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634878760] [2021-06-05 03:09:31,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:32,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:32,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634878760] [2021-06-05 03:09:32,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634878760] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:32,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202276078] [2021-06-05 03:09:32,057 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 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 [2021-06-05 03:09:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:32,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 03:09:32,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:09:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:32,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202276078] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:32,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:09:32,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-06-05 03:09:32,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897277799] [2021-06-05 03:09:32,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 03:09:32,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:32,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 03:09:32,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 03:09:32,188 INFO L87 Difference]: Start difference. First operand 550 states and 1085 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:32,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:32,372 INFO L93 Difference]: Finished difference Result 976 states and 1894 transitions. [2021-06-05 03:09:32,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 03:09:32,373 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 03:09:32,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:32,376 INFO L225 Difference]: With dead ends: 976 [2021-06-05 03:09:32,377 INFO L226 Difference]: Without dead ends: 782 [2021-06-05 03:09:32,377 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 124.2ms TimeCoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2021-06-05 03:09:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-06-05 03:09:32,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 488. [2021-06-05 03:09:32,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.9548254620123204) internal successors, (952), 487 states have internal predecessors, (952), 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) [2021-06-05 03:09:32,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 952 transitions. [2021-06-05 03:09:32,392 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 952 transitions. Word has length 36 [2021-06-05 03:09:32,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:32,392 INFO L482 AbstractCegarLoop]: Abstraction has 488 states and 952 transitions. [2021-06-05 03:09:32,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 952 transitions. [2021-06-05 03:09:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 03:09:32,394 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:32,394 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:32,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:09:32,613 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:32,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:32,613 INFO L82 PathProgramCache]: Analyzing trace with hash -205248591, now seen corresponding path program 8 times [2021-06-05 03:09:32,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:32,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233523543] [2021-06-05 03:09:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-05 03:09:32,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:32,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233523543] [2021-06-05 03:09:32,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233523543] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:32,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403845614] [2021-06-05 03:09:32,696 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 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 [2021-06-05 03:09:32,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:09:32,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:09:32,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 03:09:32,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:09:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-05 03:09:32,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403845614] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:32,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:09:32,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-06-05 03:09:32,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024211393] [2021-06-05 03:09:32,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:09:32,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:32,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:09:32,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:09:32,824 INFO L87 Difference]: Start difference. First operand 488 states and 952 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:32,926 INFO L93 Difference]: Finished difference Result 728 states and 1403 transitions. [2021-06-05 03:09:32,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:09:32,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 03:09:32,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:32,928 INFO L225 Difference]: With dead ends: 728 [2021-06-05 03:09:32,928 INFO L226 Difference]: Without dead ends: 451 [2021-06-05 03:09:32,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-06-05 03:09:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-06-05 03:09:32,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 297. [2021-06-05 03:09:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.929054054054054) internal successors, (571), 296 states have internal predecessors, (571), 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) [2021-06-05 03:09:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 571 transitions. [2021-06-05 03:09:32,938 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 571 transitions. Word has length 36 [2021-06-05 03:09:32,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:32,939 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 571 transitions. [2021-06-05 03:09:32,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:32,939 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 571 transitions. [2021-06-05 03:09:32,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 03:09:32,939 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:32,940 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:33,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-05 03:09:33,164 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:33,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:33,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1580118603, now seen corresponding path program 9 times [2021-06-05 03:09:33,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:33,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771270709] [2021-06-05 03:09:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:33,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:33,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771270709] [2021-06-05 03:09:33,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771270709] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:33,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263407767] [2021-06-05 03:09:33,249 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 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 [2021-06-05 03:09:33,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 03:09:33,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:09:33,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 03:09:33,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:09:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:33,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263407767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:33,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:09:33,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-05 03:09:33,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484916850] [2021-06-05 03:09:33,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 03:09:33,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:33,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 03:09:33,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 03:09:33,358 INFO L87 Difference]: Start difference. First operand 297 states and 571 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:33,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:33,544 INFO L93 Difference]: Finished difference Result 982 states and 1931 transitions. [2021-06-05 03:09:33,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 03:09:33,544 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 03:09:33,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:33,547 INFO L225 Difference]: With dead ends: 982 [2021-06-05 03:09:33,547 INFO L226 Difference]: Without dead ends: 495 [2021-06-05 03:09:33,548 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 148.9ms TimeCoverageRelationStatistics Valid=192, Invalid=360, Unknown=0, NotChecked=0, Total=552 [2021-06-05 03:09:33,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-06-05 03:09:33,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 318. [2021-06-05 03:09:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.9369085173501577) internal successors, (614), 317 states have internal predecessors, (614), 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) [2021-06-05 03:09:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 614 transitions. [2021-06-05 03:09:33,556 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 614 transitions. Word has length 36 [2021-06-05 03:09:33,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:33,556 INFO L482 AbstractCegarLoop]: Abstraction has 318 states and 614 transitions. [2021-06-05 03:09:33,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:33,556 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 614 transitions. [2021-06-05 03:09:33,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 03:09:33,557 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:33,557 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:33,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:09:33,781 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:33,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:33,781 INFO L82 PathProgramCache]: Analyzing trace with hash -186879887, now seen corresponding path program 10 times [2021-06-05 03:09:33,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:33,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930200385] [2021-06-05 03:09:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:33,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:33,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930200385] [2021-06-05 03:09:33,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930200385] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:33,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136276875] [2021-06-05 03:09:33,861 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 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 [2021-06-05 03:09:33,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 03:09:33,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:09:33,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 03:09:33,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:09:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:33,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136276875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:33,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:09:33,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-05 03:09:33,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695988960] [2021-06-05 03:09:33,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 03:09:33,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:33,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 03:09:33,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 03:09:33,965 INFO L87 Difference]: Start difference. First operand 318 states and 614 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:34,153 INFO L93 Difference]: Finished difference Result 960 states and 1883 transitions. [2021-06-05 03:09:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 03:09:34,154 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 03:09:34,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:34,156 INFO L225 Difference]: With dead ends: 960 [2021-06-05 03:09:34,156 INFO L226 Difference]: Without dead ends: 395 [2021-06-05 03:09:34,156 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 141.9ms TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2021-06-05 03:09:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-06-05 03:09:34,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 274. [2021-06-05 03:09:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.9267399267399268) internal successors, (526), 273 states have internal predecessors, (526), 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) [2021-06-05 03:09:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 526 transitions. [2021-06-05 03:09:34,162 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 526 transitions. Word has length 36 [2021-06-05 03:09:34,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:34,162 INFO L482 AbstractCegarLoop]: Abstraction has 274 states and 526 transitions. [2021-06-05 03:09:34,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:34,163 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 526 transitions. [2021-06-05 03:09:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 03:09:34,163 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:34,163 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:34,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:09:34,386 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:34,387 INFO L82 PathProgramCache]: Analyzing trace with hash -460149865, now seen corresponding path program 11 times [2021-06-05 03:09:34,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:34,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177010665] [2021-06-05 03:09:34,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:34,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:34,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177010665] [2021-06-05 03:09:34,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177010665] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:34,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596287316] [2021-06-05 03:09:34,476 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 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 [2021-06-05 03:09:34,510 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 03:09:34,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:09:34,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 03:09:34,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:09:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:34,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596287316] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:34,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:09:34,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-06-05 03:09:34,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248197861] [2021-06-05 03:09:34,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 03:09:34,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:34,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 03:09:34,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 03:09:34,587 INFO L87 Difference]: Start difference. First operand 274 states and 526 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:34,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:34,791 INFO L93 Difference]: Finished difference Result 896 states and 1759 transitions. [2021-06-05 03:09:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 03:09:34,792 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 03:09:34,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:34,793 INFO L225 Difference]: With dead ends: 896 [2021-06-05 03:09:34,793 INFO L226 Difference]: Without dead ends: 413 [2021-06-05 03:09:34,794 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 165.2ms TimeCoverageRelationStatistics Valid=209, Invalid=391, Unknown=0, NotChecked=0, Total=600 [2021-06-05 03:09:34,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-06-05 03:09:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 256. [2021-06-05 03:09:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.8823529411764706) internal successors, (480), 255 states have internal predecessors, (480), 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) [2021-06-05 03:09:34,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 480 transitions. [2021-06-05 03:09:34,801 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 480 transitions. Word has length 36 [2021-06-05 03:09:34,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:34,801 INFO L482 AbstractCegarLoop]: Abstraction has 256 states and 480 transitions. [2021-06-05 03:09:34,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:34,801 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 480 transitions. [2021-06-05 03:09:34,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 03:09:34,802 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:09:34,802 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:09:35,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-06-05 03:09:35,017 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:09:35,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:09:35,017 INFO L82 PathProgramCache]: Analyzing trace with hash 859444205, now seen corresponding path program 12 times [2021-06-05 03:09:35,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:09:35,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970282884] [2021-06-05 03:09:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:09:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:09:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:35,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:09:35,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970282884] [2021-06-05 03:09:35,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970282884] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:35,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013024105] [2021-06-05 03:09:35,145 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 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 [2021-06-05 03:09:35,204 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 03:09:35,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:09:35,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 03:09:35,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:09:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:09:35,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013024105] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:09:35,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:09:35,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-06-05 03:09:35,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109351979] [2021-06-05 03:09:35,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 03:09:35,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:09:35,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 03:09:35,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 03:09:35,296 INFO L87 Difference]: Start difference. First operand 256 states and 480 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:35,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:09:35,558 INFO L93 Difference]: Finished difference Result 413 states and 770 transitions. [2021-06-05 03:09:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 03:09:35,558 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 03:09:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:09:35,559 INFO L225 Difference]: With dead ends: 413 [2021-06-05 03:09:35,559 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 03:09:35,559 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 250.1ms TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2021-06-05 03:09:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 03:09:35,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 03:09:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-06-05 03:09:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 03:09:35,560 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-06-05 03:09:35,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:09:35,560 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 03:09:35,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:09:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 03:09:35,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 03:09:35,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 03:09:35,762 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 03:09:35,764 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 03:09:35 BasicIcfg [2021-06-05 03:09:35,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 03:09:35,764 INFO L168 Benchmark]: Toolchain (without parser) took 8346.95 ms. Allocated memory was 358.6 MB in the beginning and 432.0 MB in the end (delta: 73.4 MB). Free memory was 337.8 MB in the beginning and 322.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 91.9 MB. Max. memory is 16.0 GB. [2021-06-05 03:09:35,764 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 358.6 MB. Free memory was 338.9 MB in the beginning and 338.8 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:09:35,765 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.53 ms. Allocated memory is still 358.6 MB. Free memory was 337.8 MB in the beginning and 336.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 03:09:35,765 INFO L168 Benchmark]: Boogie Preprocessor took 16.75 ms. Allocated memory is still 358.6 MB. Free memory was 336.3 MB in the beginning and 335.4 MB in the end (delta: 946.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 03:09:35,765 INFO L168 Benchmark]: RCFGBuilder took 238.86 ms. Allocated memory is still 358.6 MB. Free memory was 335.3 MB in the beginning and 325.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-05 03:09:35,765 INFO L168 Benchmark]: TraceAbstraction took 8059.06 ms. Allocated memory was 358.6 MB in the beginning and 432.0 MB in the end (delta: 73.4 MB). Free memory was 324.9 MB in the beginning and 322.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 77.3 MB. Max. memory is 16.0 GB. [2021-06-05 03:09:35,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 358.6 MB. Free memory was 338.9 MB in the beginning and 338.8 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.53 ms. Allocated memory is still 358.6 MB. Free memory was 337.8 MB in the beginning and 336.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.75 ms. Allocated memory is still 358.6 MB. Free memory was 336.3 MB in the beginning and 335.4 MB in the end (delta: 946.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 238.86 ms. Allocated memory is still 358.6 MB. Free memory was 335.3 MB in the beginning and 325.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8059.06 ms. Allocated memory was 358.6 MB in the beginning and 432.0 MB in the end (delta: 73.4 MB). Free memory was 324.9 MB in the beginning and 322.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 77.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 39 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7933.3ms, OverallIterations: 14, TraceHistogramMax: 3, EmptinessCheckTime: 40.6ms, AutomataDifference: 2234.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 842 SDtfs, 2082 SDslu, 2576 SDs, 0 SdLazy, 1286 SolverSat, 270 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 706.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 589 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1635.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=550occurred in iteration=8, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 223.0ms AutomataMinimizationTime, 14 MinimizatonAttempts, 1866 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 85.3ms SsaConstructionTime, 240.4ms SatisfiabilityAnalysisTime, 2024.5ms InterpolantComputationTime, 808 NumberOfCodeBlocks, 804 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 782 ConstructedInterpolants, 0 QuantifiedInterpolants, 2080 SizeOfPredicates, 72 NumberOfNonLiveVariables, 658 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 26 InterpolantComputations, 3 PerfectInterpolantSequences, 480/572 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...