/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:45:24,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:45:24,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:45:24,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:45:24,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:45:24,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:45:24,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:45:24,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:45:24,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:45:24,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:45:24,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:45:24,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:45:24,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:45:24,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:45:24,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:45:24,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:45:24,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:45:24,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:45:24,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:45:24,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:45:24,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:45:24,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:45:24,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:45:24,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:45:24,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:45:24,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:45:24,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:45:24,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:45:24,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:45:24,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:45:24,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:45:24,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:45:24,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:45:24,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:45:24,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:45:24,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:45:24,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:45:24,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:45:24,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:45:24,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:45:24,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:45:24,140 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-SemanticLbe.epf [2020-04-17 21:45:24,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:45:24,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:45:24,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:45:24,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:45:24,170 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:45:24,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:45:24,171 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:45:24,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:45:24,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:45:24,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:45:24,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:45:24,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:45:24,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:45:24,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:45:24,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:45:24,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:45:24,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:45:24,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:45:24,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:45:24,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:45:24,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:45:24,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:45:24,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:45:24,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:45:24,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:45:24,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:45:24,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:45:24,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:45:24,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:45:24,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:45:24,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:45:24,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:45:24,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:45:24,473 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:45:24,474 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-04-17 21:45:24,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65db5379/7bbe192de5d8415ab457d7fbcfc711e3/FLAG57662103f [2020-04-17 21:45:25,099 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:45:25,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-04-17 21:45:25,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65db5379/7bbe192de5d8415ab457d7fbcfc711e3/FLAG57662103f [2020-04-17 21:45:25,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65db5379/7bbe192de5d8415ab457d7fbcfc711e3 [2020-04-17 21:45:25,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:45:25,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:45:25,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:45:25,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:45:25,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:45:25,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:45:25" (1/1) ... [2020-04-17 21:45:25,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e69f865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:25, skipping insertion in model container [2020-04-17 21:45:25,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:45:25" (1/1) ... [2020-04-17 21:45:25,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:45:25,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:45:25,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:45:25,950 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:45:26,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:45:26,082 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:45:26,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:26 WrapperNode [2020-04-17 21:45:26,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:45:26,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:45:26,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:45:26,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:45:26,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:26" (1/1) ... [2020-04-17 21:45:26,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:26" (1/1) ... [2020-04-17 21:45:26,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:45:26,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:45:26,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:45:26,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:45:26,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:26" (1/1) ... [2020-04-17 21:45:26,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:26" (1/1) ... [2020-04-17 21:45:26,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:26" (1/1) ... [2020-04-17 21:45:26,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:26" (1/1) ... [2020-04-17 21:45:26,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:26" (1/1) ... [2020-04-17 21:45:26,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:26" (1/1) ... [2020-04-17 21:45:26,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:26" (1/1) ... [2020-04-17 21:45:26,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:45:26,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:45:26,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:45:26,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:45:26,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:26" (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 [2020-04-17 21:45:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:45:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:45:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:45:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:45:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:45:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:45:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:45:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:45:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:45:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:45:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:45:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:45:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:45:26,241 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 21:45:26,615 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:45:26,615 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:45:26,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:45:26 BoogieIcfgContainer [2020-04-17 21:45:26,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:45:26,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:45:26,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:45:26,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:45:26,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:45:25" (1/3) ... [2020-04-17 21:45:26,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe6ac8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:45:26, skipping insertion in model container [2020-04-17 21:45:26,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:45:26" (2/3) ... [2020-04-17 21:45:26,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe6ac8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:45:26, skipping insertion in model container [2020-04-17 21:45:26,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:45:26" (3/3) ... [2020-04-17 21:45:26,629 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-04-17 21:45:26,640 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:45:26,641 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:45:26,649 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:45:26,650 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:45:26,676 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,677 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,677 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,678 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,678 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,679 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,679 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,679 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,680 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,680 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,680 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,681 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,681 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,681 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,682 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,682 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,682 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,683 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,686 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,687 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,687 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,688 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,693 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,694 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,694 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,694 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,705 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,705 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,705 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,706 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:45:26,725 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:45:26,746 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:45:26,746 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:45:26,747 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:45:26,747 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:45:26,747 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:45:26,747 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:45:26,748 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:45:26,748 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:45:26,767 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-17 21:45:26,770 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 21:45:26,822 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 21:45:26,822 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:45:26,828 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:45:26,831 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 21:45:26,851 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 21:45:26,852 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:45:26,853 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:45:26,855 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 21:45:26,856 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:45:28,695 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-04-17 21:45:28,695 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 21:45:28,700 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 21:45:28,731 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 21:45:28,734 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 21:45:28,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:45:28,746 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:28,747 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:28,747 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:28,755 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-04-17 21:45:28,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:28,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891661849] [2020-04-17 21:45:28,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:29,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891661849] [2020-04-17 21:45:29,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:29,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:45:29,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460744368] [2020-04-17 21:45:29,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:45:29,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:29,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:45:29,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:29,053 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 21:45:29,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:29,103 INFO L93 Difference]: Finished difference Result 282 states and 804 transitions. [2020-04-17 21:45:29,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:45:29,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 21:45:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:29,122 INFO L225 Difference]: With dead ends: 282 [2020-04-17 21:45:29,122 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 21:45:29,124 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:29,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 21:45:29,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 21:45:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 21:45:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 596 transitions. [2020-04-17 21:45:29,189 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 596 transitions. Word has length 8 [2020-04-17 21:45:29,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:29,191 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 596 transitions. [2020-04-17 21:45:29,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:45:29,191 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 596 transitions. [2020-04-17 21:45:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:45:29,193 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:29,193 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:29,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:29,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:29,194 INFO L82 PathProgramCache]: Analyzing trace with hash -457725721, now seen corresponding path program 1 times [2020-04-17 21:45:29,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:29,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627168165] [2020-04-17 21:45:29,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:29,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627168165] [2020-04-17 21:45:29,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:29,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:45:29,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555981298] [2020-04-17 21:45:29,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:45:29,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:29,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:45:29,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:29,248 INFO L87 Difference]: Start difference. First operand 218 states and 596 transitions. Second operand 3 states. [2020-04-17 21:45:29,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:29,268 INFO L93 Difference]: Finished difference Result 250 states and 644 transitions. [2020-04-17 21:45:29,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:45:29,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 21:45:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:29,272 INFO L225 Difference]: With dead ends: 250 [2020-04-17 21:45:29,272 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 21:45:29,273 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 21:45:29,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 202. [2020-04-17 21:45:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-17 21:45:29,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 528 transitions. [2020-04-17 21:45:29,303 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 528 transitions. Word has length 10 [2020-04-17 21:45:29,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:29,303 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 528 transitions. [2020-04-17 21:45:29,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:45:29,304 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 528 transitions. [2020-04-17 21:45:29,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:45:29,308 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:29,308 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:29,308 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:29,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:29,309 INFO L82 PathProgramCache]: Analyzing trace with hash 42721384, now seen corresponding path program 1 times [2020-04-17 21:45:29,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:29,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917619852] [2020-04-17 21:45:29,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:29,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917619852] [2020-04-17 21:45:29,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:29,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:45:29,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816377496] [2020-04-17 21:45:29,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:45:29,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:29,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:45:29,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:29,383 INFO L87 Difference]: Start difference. First operand 202 states and 528 transitions. Second operand 3 states. [2020-04-17 21:45:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:29,400 INFO L93 Difference]: Finished difference Result 194 states and 502 transitions. [2020-04-17 21:45:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:45:29,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 21:45:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:29,405 INFO L225 Difference]: With dead ends: 194 [2020-04-17 21:45:29,405 INFO L226 Difference]: Without dead ends: 194 [2020-04-17 21:45:29,406 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-04-17 21:45:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-04-17 21:45:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-04-17 21:45:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 502 transitions. [2020-04-17 21:45:29,431 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 502 transitions. Word has length 10 [2020-04-17 21:45:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:29,431 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 502 transitions. [2020-04-17 21:45:29,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:45:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 502 transitions. [2020-04-17 21:45:29,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:45:29,436 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:29,436 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:29,436 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:29,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1703756569, now seen corresponding path program 1 times [2020-04-17 21:45:29,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:29,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283951857] [2020-04-17 21:45:29,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:29,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283951857] [2020-04-17 21:45:29,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:29,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:45:29,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339389551] [2020-04-17 21:45:29,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:45:29,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:29,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:45:29,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:45:29,516 INFO L87 Difference]: Start difference. First operand 194 states and 502 transitions. Second operand 4 states. [2020-04-17 21:45:29,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:29,543 INFO L93 Difference]: Finished difference Result 278 states and 696 transitions. [2020-04-17 21:45:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:45:29,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 21:45:29,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:29,545 INFO L225 Difference]: With dead ends: 278 [2020-04-17 21:45:29,545 INFO L226 Difference]: Without dead ends: 152 [2020-04-17 21:45:29,546 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:45:29,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-04-17 21:45:29,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-04-17 21:45:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-04-17 21:45:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 370 transitions. [2020-04-17 21:45:29,554 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 370 transitions. Word has length 11 [2020-04-17 21:45:29,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:29,555 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 370 transitions. [2020-04-17 21:45:29,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:45:29,555 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 370 transitions. [2020-04-17 21:45:29,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:45:29,556 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:29,556 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:29,556 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1324362317, now seen corresponding path program 2 times [2020-04-17 21:45:29,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:29,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797967177] [2020-04-17 21:45:29,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:29,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797967177] [2020-04-17 21:45:29,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:29,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:45:29,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357334818] [2020-04-17 21:45:29,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:45:29,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:29,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:45:29,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:29,593 INFO L87 Difference]: Start difference. First operand 152 states and 370 transitions. Second operand 3 states. [2020-04-17 21:45:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:29,602 INFO L93 Difference]: Finished difference Result 150 states and 363 transitions. [2020-04-17 21:45:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:45:29,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 21:45:29,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:29,604 INFO L225 Difference]: With dead ends: 150 [2020-04-17 21:45:29,604 INFO L226 Difference]: Without dead ends: 150 [2020-04-17 21:45:29,605 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:29,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-04-17 21:45:29,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-04-17 21:45:29,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-04-17 21:45:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 363 transitions. [2020-04-17 21:45:29,611 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 363 transitions. Word has length 11 [2020-04-17 21:45:29,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:29,612 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 363 transitions. [2020-04-17 21:45:29,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:45:29,612 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 363 transitions. [2020-04-17 21:45:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:45:29,613 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:29,614 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:29,614 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:29,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:29,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1243290927, now seen corresponding path program 1 times [2020-04-17 21:45:29,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:29,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672208515] [2020-04-17 21:45:29,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:29,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672208515] [2020-04-17 21:45:29,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:29,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:45:29,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889234012] [2020-04-17 21:45:29,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:45:29,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:29,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:45:29,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:45:29,670 INFO L87 Difference]: Start difference. First operand 150 states and 363 transitions. Second operand 4 states. [2020-04-17 21:45:29,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:29,698 INFO L93 Difference]: Finished difference Result 188 states and 448 transitions. [2020-04-17 21:45:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:45:29,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 21:45:29,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:29,700 INFO L225 Difference]: With dead ends: 188 [2020-04-17 21:45:29,716 INFO L226 Difference]: Without dead ends: 104 [2020-04-17 21:45:29,717 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:45:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-17 21:45:29,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-17 21:45:29,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-17 21:45:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-04-17 21:45:29,721 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-04-17 21:45:29,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:29,721 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-04-17 21:45:29,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:45:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-04-17 21:45:29,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:45:29,723 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:29,723 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:29,723 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:29,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:29,723 INFO L82 PathProgramCache]: Analyzing trace with hash -589742481, now seen corresponding path program 1 times [2020-04-17 21:45:29,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:29,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290221854] [2020-04-17 21:45:29,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:29,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290221854] [2020-04-17 21:45:29,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:29,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:45:29,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632353259] [2020-04-17 21:45:29,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:45:29,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:29,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:45:29,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:45:29,756 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-04-17 21:45:29,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:29,782 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-04-17 21:45:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:45:29,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:45:29,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:29,783 INFO L225 Difference]: With dead ends: 128 [2020-04-17 21:45:29,783 INFO L226 Difference]: Without dead ends: 68 [2020-04-17 21:45:29,784 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:45:29,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-17 21:45:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-17 21:45:29,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-17 21:45:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-17 21:45:29,791 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-04-17 21:45:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:29,791 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-17 21:45:29,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:45:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-17 21:45:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:45:29,792 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:29,792 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:29,793 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 2 times [2020-04-17 21:45:29,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:29,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092657345] [2020-04-17 21:45:29,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:29,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092657345] [2020-04-17 21:45:29,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:29,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:45:29,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136979972] [2020-04-17 21:45:29,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:45:29,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:29,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:45:29,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:45:29,890 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-04-17 21:45:29,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:29,929 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-04-17 21:45:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:45:29,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:45:29,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:29,930 INFO L225 Difference]: With dead ends: 81 [2020-04-17 21:45:29,931 INFO L226 Difference]: Without dead ends: 59 [2020-04-17 21:45:29,931 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:45:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-17 21:45:29,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-17 21:45:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-17 21:45:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-04-17 21:45:29,934 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-04-17 21:45:29,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:29,934 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-04-17 21:45:29,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:45:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-04-17 21:45:29,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:45:29,936 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:29,936 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:29,936 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:29,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:29,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-04-17 21:45:29,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:29,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577247025] [2020-04-17 21:45:29,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:30,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577247025] [2020-04-17 21:45:30,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:30,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:45:30,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346703370] [2020-04-17 21:45:30,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:45:30,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:30,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:45:30,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:45:30,020 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-04-17 21:45:30,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:30,069 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-04-17 21:45:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:45:30,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 21:45:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:30,070 INFO L225 Difference]: With dead ends: 60 [2020-04-17 21:45:30,071 INFO L226 Difference]: Without dead ends: 45 [2020-04-17 21:45:30,071 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:45:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-04-17 21:45:30,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-04-17 21:45:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-04-17 21:45:30,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-04-17 21:45:30,074 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-04-17 21:45:30,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:30,074 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-04-17 21:45:30,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:45:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-04-17 21:45:30,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 21:45:30,075 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:30,075 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:30,075 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:30,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:30,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-04-17 21:45:30,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:30,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892008133] [2020-04-17 21:45:30,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:30,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892008133] [2020-04-17 21:45:30,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:30,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:45:30,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31526003] [2020-04-17 21:45:30,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:45:30,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:30,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:45:30,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:45:30,171 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-04-17 21:45:30,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:30,229 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-04-17 21:45:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 21:45:30,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 21:45:30,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:30,231 INFO L225 Difference]: With dead ends: 42 [2020-04-17 21:45:30,231 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 21:45:30,231 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 21:45:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 21:45:30,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 21:45:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 21:45:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-17 21:45:30,233 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-17 21:45:30,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:30,234 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-17 21:45:30,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:45:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-17 21:45:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 21:45:30,235 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:45:30,235 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:45:30,235 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:45:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:45:30,236 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-04-17 21:45:30,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:45:30,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243838948] [2020-04-17 21:45:30,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:45:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:45:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:45:30,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243838948] [2020-04-17 21:45:30,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:45:30,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:45:30,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115059163] [2020-04-17 21:45:30,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:45:30,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:45:30,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:45:30,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:30,281 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-04-17 21:45:30,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:45:30,286 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-17 21:45:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:45:30,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 21:45:30,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:45:30,287 INFO L225 Difference]: With dead ends: 35 [2020-04-17 21:45:30,287 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:45:30,287 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:45:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:45:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:45:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:45:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:45:30,288 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 21:45:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:45:30,288 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:45:30,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:45:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:45:30,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:45:30,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:45:30 BasicIcfg [2020-04-17 21:45:30,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:45:30,298 INFO L168 Benchmark]: Toolchain (without parser) took 4895.75 ms. Allocated memory was 138.4 MB in the beginning and 250.1 MB in the end (delta: 111.7 MB). Free memory was 100.8 MB in the beginning and 153.7 MB in the end (delta: -52.8 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2020-04-17 21:45:30,299 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 21:45:30,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.00 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.9 MB in the beginning and 157.0 MB in the end (delta: -58.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-04-17 21:45:30,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.16 ms. Allocated memory is still 202.4 MB. Free memory was 157.0 MB in the beginning and 154.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 21:45:30,308 INFO L168 Benchmark]: Boogie Preprocessor took 27.18 ms. Allocated memory is still 202.4 MB. Free memory was 154.9 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 21:45:30,309 INFO L168 Benchmark]: RCFGBuilder took 459.31 ms. Allocated memory is still 202.4 MB. Free memory was 153.5 MB in the beginning and 131.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-17 21:45:30,314 INFO L168 Benchmark]: TraceAbstraction took 3673.88 ms. Allocated memory was 202.4 MB in the beginning and 250.1 MB in the end (delta: 47.7 MB). Free memory was 130.7 MB in the beginning and 153.7 MB in the end (delta: -22.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-04-17 21:45:30,323 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.00 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.9 MB in the beginning and 157.0 MB in the end (delta: -58.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.16 ms. Allocated memory is still 202.4 MB. Free memory was 157.0 MB in the beginning and 154.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.18 ms. Allocated memory is still 202.4 MB. Free memory was 154.9 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.31 ms. Allocated memory is still 202.4 MB. Free memory was 153.5 MB in the beginning and 131.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3673.88 ms. Allocated memory was 202.4 MB in the beginning and 250.1 MB in the end (delta: 47.7 MB). Free memory was 130.7 MB in the beginning and 153.7 MB in the end (delta: -22.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 199 SDtfs, 127 SDslu, 194 SDs, 0 SdLazy, 129 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 16 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 4185 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...