/usr/bin/java -Xmx16000000000 -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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 16:59:26,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 16:59:26,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 16:59:26,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 16:59:26,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 16:59:26,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 16:59:26,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 16:59:26,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 16:59:26,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 16:59:26,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 16:59:26,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 16:59:26,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 16:59:26,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 16:59:26,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 16:59:26,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 16:59:26,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 16:59:26,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 16:59:26,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 16:59:26,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 16:59:26,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 16:59:26,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 16:59:26,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 16:59:26,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 16:59:26,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 16:59:26,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 16:59:26,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 16:59:26,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 16:59:26,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 16:59:26,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 16:59:26,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 16:59:26,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 16:59:26,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 16:59:26,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 16:59:26,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 16:59:26,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 16:59:26,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 16:59:26,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 16:59:26,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 16:59:26,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 16:59:26,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 16:59:26,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 16:59:26,961 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 16:59:26,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 16:59:26,962 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 16:59:26,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 16:59:26,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 16:59:26,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 16:59:26,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 16:59:26,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 16:59:26,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 16:59:26,963 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 16:59:26,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 16:59:26,963 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 16:59:26,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 16:59:26,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 16:59:26,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 16:59:26,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 16:59:26,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 16:59:26,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 16:59:26,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 16:59:26,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 16:59:26,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 16:59:26,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 16:59:26,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 16:59:26,966 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 16:59:26,966 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 16:59:26,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 16:59:27,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 16:59:27,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 16:59:27,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 16:59:27,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 16:59:27,278 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 16:59:27,279 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2020-10-11 16:59:27,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/578575f5e/ef5df325467148dbbf98e1e1d61e71d8/FLAG1d567e1c8 [2020-10-11 16:59:27,882 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 16:59:27,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2020-10-11 16:59:27,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/578575f5e/ef5df325467148dbbf98e1e1d61e71d8/FLAG1d567e1c8 [2020-10-11 16:59:28,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/578575f5e/ef5df325467148dbbf98e1e1d61e71d8 [2020-10-11 16:59:28,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 16:59:28,185 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 16:59:28,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 16:59:28,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 16:59:28,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 16:59:28,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:59:28" (1/1) ... [2020-10-11 16:59:28,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bbe5a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28, skipping insertion in model container [2020-10-11 16:59:28,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:59:28" (1/1) ... [2020-10-11 16:59:28,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 16:59:28,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 16:59:28,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:59:28,797 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 16:59:28,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:59:28,924 INFO L208 MainTranslator]: Completed translation [2020-10-11 16:59:28,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28 WrapperNode [2020-10-11 16:59:28,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 16:59:28,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 16:59:28,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 16:59:28,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 16:59:28,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28" (1/1) ... [2020-10-11 16:59:28,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28" (1/1) ... [2020-10-11 16:59:28,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 16:59:28,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 16:59:28,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 16:59:28,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 16:59:28,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28" (1/1) ... [2020-10-11 16:59:28,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28" (1/1) ... [2020-10-11 16:59:28,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28" (1/1) ... [2020-10-11 16:59:28,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28" (1/1) ... [2020-10-11 16:59:28,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28" (1/1) ... [2020-10-11 16:59:28,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28" (1/1) ... [2020-10-11 16:59:28,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28" (1/1) ... [2020-10-11 16:59:29,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 16:59:29,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 16:59:29,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 16:59:29,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 16:59:29,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28" (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 [2020-10-11 16:59:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 16:59:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-11 16:59:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-11 16:59:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-11 16:59:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-11 16:59:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 16:59:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 16:59:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 16:59:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 16:59:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 16:59:29,074 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 16:59:29,390 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 16:59:29,390 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-11 16:59:29,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:59:29 BoogieIcfgContainer [2020-10-11 16:59:29,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 16:59:29,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 16:59:29,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 16:59:29,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 16:59:29,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:59:28" (1/3) ... [2020-10-11 16:59:29,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d24fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:59:29, skipping insertion in model container [2020-10-11 16:59:29,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:59:28" (2/3) ... [2020-10-11 16:59:29,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d24fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:59:29, skipping insertion in model container [2020-10-11 16:59:29,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:59:29" (3/3) ... [2020-10-11 16:59:29,402 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2020-10-11 16:59:29,415 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 16:59:29,424 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 16:59:29,425 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 16:59:29,456 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,456 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,456 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,457 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,459 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,459 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,461 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,462 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,463 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,466 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,467 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,472 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,472 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,473 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,473 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:59:29,497 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 16:59:29,519 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 16:59:29,520 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 16:59:29,520 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 16:59:29,520 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 16:59:29,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 16:59:29,520 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 16:59:29,521 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 16:59:29,521 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 16:59:29,535 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 87 transitions, 196 flow [2020-10-11 16:59:29,599 INFO L129 PetriNetUnfolder]: 21/87 cut-off events. [2020-10-11 16:59:29,599 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 16:59:29,608 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 87 events. 21/87 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2020-10-11 16:59:29,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 87 transitions, 196 flow [2020-10-11 16:59:29,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 75 transitions, 162 flow [2020-10-11 16:59:29,633 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2020-10-11 16:59:29,633 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 16:59:29,634 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:59:29,635 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:59:29,635 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:59:29,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:59:29,641 INFO L82 PathProgramCache]: Analyzing trace with hash -243768386, now seen corresponding path program 1 times [2020-10-11 16:59:29,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:59:29,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667679501] [2020-10-11 16:59:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:59:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:59:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:59:29,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667679501] [2020-10-11 16:59:29,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:59:29,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 16:59:29,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427816155] [2020-10-11 16:59:29,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 16:59:29,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:59:29,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 16:59:29,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 16:59:29,848 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 87 [2020-10-11 16:59:29,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 162 flow. Second operand 2 states. [2020-10-11 16:59:29,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:59:29,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 87 [2020-10-11 16:59:29,852 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:59:29,879 INFO L129 PetriNetUnfolder]: 10/67 cut-off events. [2020-10-11 16:59:29,879 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-11 16:59:29,880 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 10/67 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 10/65 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2020-10-11 16:59:29,882 INFO L132 encePairwiseOnDemand]: 77/87 looper letters, 0 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2020-10-11 16:59:29,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 142 flow [2020-10-11 16:59:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 16:59:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-11 16:59:29,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 164 transitions. [2020-10-11 16:59:29,896 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9425287356321839 [2020-10-11 16:59:29,897 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 164 transitions. [2020-10-11 16:59:29,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 164 transitions. [2020-10-11 16:59:29,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:59:29,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 164 transitions. [2020-10-11 16:59:29,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-11 16:59:29,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-11 16:59:29,910 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-11 16:59:29,912 INFO L185 Difference]: Start difference. First operand has 61 places, 75 transitions, 162 flow. Second operand 2 states and 164 transitions. [2020-10-11 16:59:29,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 142 flow [2020-10-11 16:59:29,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 16:59:29,922 INFO L241 Difference]: Finished difference. Result has 58 places, 65 transitions, 134 flow [2020-10-11 16:59:29,925 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=134, PETRI_PLACES=58, PETRI_TRANSITIONS=65} [2020-10-11 16:59:29,926 INFO L341 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2020-10-11 16:59:29,927 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 65 transitions, 134 flow [2020-10-11 16:59:29,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 16:59:29,927 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:59:29,927 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:59:29,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 16:59:29,928 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:59:29,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:59:29,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1499071740, now seen corresponding path program 1 times [2020-10-11 16:59:29,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:59:29,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720123905] [2020-10-11 16:59:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:59:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:59:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:59:30,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720123905] [2020-10-11 16:59:30,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:59:30,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:59:30,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928563971] [2020-10-11 16:59:30,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:59:30,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:59:30,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:59:30,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:59:30,080 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 87 [2020-10-11 16:59:30,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 65 transitions, 134 flow. Second operand 3 states. [2020-10-11 16:59:30,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:59:30,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 87 [2020-10-11 16:59:30,082 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:59:30,130 INFO L129 PetriNetUnfolder]: 14/102 cut-off events. [2020-10-11 16:59:30,130 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 16:59:30,132 INFO L80 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 102 events. 14/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 235 event pairs, 1 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 115. Up to 8 conditions per place. [2020-10-11 16:59:30,133 INFO L132 encePairwiseOnDemand]: 82/87 looper letters, 3 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2020-10-11 16:59:30,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 148 flow [2020-10-11 16:59:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:59:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:59:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2020-10-11 16:59:30,137 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8582375478927203 [2020-10-11 16:59:30,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2020-10-11 16:59:30,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2020-10-11 16:59:30,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:59:30,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2020-10-11 16:59:30,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:59:30,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:59:30,143 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:59:30,143 INFO L185 Difference]: Start difference. First operand has 58 places, 65 transitions, 134 flow. Second operand 3 states and 224 transitions. [2020-10-11 16:59:30,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 148 flow [2020-10-11 16:59:30,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-11 16:59:30,148 INFO L241 Difference]: Finished difference. Result has 62 places, 66 transitions, 154 flow [2020-10-11 16:59:30,149 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2020-10-11 16:59:30,149 INFO L341 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2020-10-11 16:59:30,150 INFO L481 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 154 flow [2020-10-11 16:59:30,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:59:30,150 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:59:30,150 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:59:30,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 16:59:30,151 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:59:30,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:59:30,151 INFO L82 PathProgramCache]: Analyzing trace with hash 83321518, now seen corresponding path program 1 times [2020-10-11 16:59:30,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:59:30,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008942356] [2020-10-11 16:59:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:59:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:59:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:59:30,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008942356] [2020-10-11 16:59:30,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:59:30,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:59:30,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135230815] [2020-10-11 16:59:30,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:59:30,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:59:30,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:59:30,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:59:30,288 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 87 [2020-10-11 16:59:30,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 154 flow. Second operand 3 states. [2020-10-11 16:59:30,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:59:30,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 87 [2020-10-11 16:59:30,289 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:59:30,315 INFO L129 PetriNetUnfolder]: 16/113 cut-off events. [2020-10-11 16:59:30,315 INFO L130 PetriNetUnfolder]: For 16/19 co-relation queries the response was YES. [2020-10-11 16:59:30,316 INFO L80 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 113 events. 16/113 cut-off events. For 16/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 307 event pairs, 2 based on Foata normal form. 4/101 useless extension candidates. Maximal degree in co-relation 147. Up to 11 conditions per place. [2020-10-11 16:59:30,318 INFO L132 encePairwiseOnDemand]: 83/87 looper letters, 4 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2020-10-11 16:59:30,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 166 flow [2020-10-11 16:59:30,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:59:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:59:30,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2020-10-11 16:59:30,321 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8582375478927203 [2020-10-11 16:59:30,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2020-10-11 16:59:30,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2020-10-11 16:59:30,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:59:30,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2020-10-11 16:59:30,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:59:30,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:59:30,325 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:59:30,325 INFO L185 Difference]: Start difference. First operand has 62 places, 66 transitions, 154 flow. Second operand 3 states and 224 transitions. [2020-10-11 16:59:30,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 166 flow [2020-10-11 16:59:30,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 16:59:30,329 INFO L241 Difference]: Finished difference. Result has 63 places, 66 transitions, 158 flow [2020-10-11 16:59:30,329 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2020-10-11 16:59:30,330 INFO L341 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2020-10-11 16:59:30,330 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 158 flow [2020-10-11 16:59:30,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:59:30,330 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:59:30,330 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:59:30,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 16:59:30,331 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:59:30,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:59:30,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1070795303, now seen corresponding path program 1 times [2020-10-11 16:59:30,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:59:30,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784176998] [2020-10-11 16:59:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:59:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:59:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:59:30,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784176998] [2020-10-11 16:59:30,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:59:30,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:59:30,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261680037] [2020-10-11 16:59:30,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:59:30,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:59:30,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:59:30,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:59:30,506 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 87 [2020-10-11 16:59:30,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 158 flow. Second operand 3 states. [2020-10-11 16:59:30,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:59:30,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 87 [2020-10-11 16:59:30,507 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:59:30,549 INFO L129 PetriNetUnfolder]: 80/295 cut-off events. [2020-10-11 16:59:30,549 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-11 16:59:30,552 INFO L80 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 295 events. 80/295 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1325 event pairs, 19 based on Foata normal form. 13/265 useless extension candidates. Maximal degree in co-relation 421. Up to 69 conditions per place. [2020-10-11 16:59:30,554 INFO L132 encePairwiseOnDemand]: 76/87 looper letters, 10 selfloop transitions, 6 changer transitions 1/71 dead transitions. [2020-10-11 16:59:30,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 71 transitions, 202 flow [2020-10-11 16:59:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:59:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:59:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2020-10-11 16:59:30,556 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8314176245210728 [2020-10-11 16:59:30,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2020-10-11 16:59:30,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2020-10-11 16:59:30,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:59:30,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2020-10-11 16:59:30,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:59:30,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:59:30,559 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:59:30,559 INFO L185 Difference]: Start difference. First operand has 63 places, 66 transitions, 158 flow. Second operand 3 states and 217 transitions. [2020-10-11 16:59:30,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 71 transitions, 202 flow [2020-10-11 16:59:30,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 16:59:30,563 INFO L241 Difference]: Finished difference. Result has 66 places, 70 transitions, 206 flow [2020-10-11 16:59:30,564 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=66, PETRI_TRANSITIONS=70} [2020-10-11 16:59:30,564 INFO L341 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2020-10-11 16:59:30,564 INFO L481 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 206 flow [2020-10-11 16:59:30,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:59:30,565 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:59:30,565 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:59:30,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 16:59:30,565 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:59:30,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:59:30,566 INFO L82 PathProgramCache]: Analyzing trace with hash -400819671, now seen corresponding path program 2 times [2020-10-11 16:59:30,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:59:30,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786463092] [2020-10-11 16:59:30,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:59:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:59:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:59:30,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786463092] [2020-10-11 16:59:30,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:59:30,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:59:30,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446000795] [2020-10-11 16:59:30,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:59:30,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:59:30,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:59:30,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:59:30,677 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 87 [2020-10-11 16:59:30,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 206 flow. Second operand 3 states. [2020-10-11 16:59:30,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:59:30,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 87 [2020-10-11 16:59:30,678 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:59:30,726 INFO L129 PetriNetUnfolder]: 128/361 cut-off events. [2020-10-11 16:59:30,726 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2020-10-11 16:59:30,728 INFO L80 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 361 events. 128/361 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1588 event pairs, 24 based on Foata normal form. 23/352 useless extension candidates. Maximal degree in co-relation 630. Up to 75 conditions per place. [2020-10-11 16:59:30,729 INFO L132 encePairwiseOnDemand]: 76/87 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2020-10-11 16:59:30,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 238 flow [2020-10-11 16:59:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:59:30,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:59:30,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2020-10-11 16:59:30,731 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8314176245210728 [2020-10-11 16:59:30,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2020-10-11 16:59:30,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2020-10-11 16:59:30,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:59:30,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2020-10-11 16:59:30,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:59:30,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:59:30,733 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:59:30,733 INFO L185 Difference]: Start difference. First operand has 66 places, 70 transitions, 206 flow. Second operand 3 states and 217 transitions. [2020-10-11 16:59:30,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 238 flow [2020-10-11 16:59:30,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 220 flow, removed 2 selfloop flow, removed 3 redundant places. [2020-10-11 16:59:30,739 INFO L241 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2020-10-11 16:59:30,739 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2020-10-11 16:59:30,739 INFO L341 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2020-10-11 16:59:30,740 INFO L481 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2020-10-11 16:59:30,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:59:30,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 16:59:30,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 04:59:30 BasicIcfg [2020-10-11 16:59:30,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 16:59:30,749 INFO L168 Benchmark]: Toolchain (without parser) took 2563.58 ms. Allocated memory was 249.6 MB in the beginning and 357.0 MB in the end (delta: 107.5 MB). Free memory was 204.9 MB in the beginning and 270.0 MB in the end (delta: -65.1 MB). Peak memory consumption was 42.4 MB. Max. memory is 14.2 GB. [2020-10-11 16:59:30,750 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 16:59:30,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.53 ms. Allocated memory was 249.6 MB in the beginning and 308.8 MB in the end (delta: 59.2 MB). Free memory was 204.9 MB in the beginning and 266.8 MB in the end (delta: -61.9 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. [2020-10-11 16:59:30,752 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.20 ms. Allocated memory is still 308.8 MB. Free memory was 266.8 MB in the beginning and 264.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:59:30,752 INFO L168 Benchmark]: Boogie Preprocessor took 30.49 ms. Allocated memory is still 308.8 MB. Free memory was 264.3 MB in the beginning and 261.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:59:30,753 INFO L168 Benchmark]: RCFGBuilder took 389.50 ms. Allocated memory is still 308.8 MB. Free memory was 261.7 MB in the beginning and 239.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 16:59:30,754 INFO L168 Benchmark]: TraceAbstraction took 1352.91 ms. Allocated memory was 308.8 MB in the beginning and 357.0 MB in the end (delta: 48.2 MB). Free memory was 237.4 MB in the beginning and 270.0 MB in the end (delta: -32.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 14.2 GB. [2020-10-11 16:59:30,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 739.53 ms. Allocated memory was 249.6 MB in the beginning and 308.8 MB in the end (delta: 59.2 MB). Free memory was 204.9 MB in the beginning and 266.8 MB in the end (delta: -61.9 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.20 ms. Allocated memory is still 308.8 MB. Free memory was 266.8 MB in the beginning and 264.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.49 ms. Allocated memory is still 308.8 MB. Free memory was 264.3 MB in the beginning and 261.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 389.50 ms. Allocated memory is still 308.8 MB. Free memory was 261.7 MB in the beginning and 239.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1352.91 ms. Allocated memory was 308.8 MB in the beginning and 357.0 MB in the end (delta: 48.2 MB). Free memory was 237.4 MB in the beginning and 270.0 MB in the end (delta: -32.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 66 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 27 SDslu, 0 SDs, 0 SdLazy, 60 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 4300 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...