/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:53:47,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:53:47,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:53:47,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:53:47,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:53:47,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:53:47,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:53:47,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:53:47,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:53:47,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:53:47,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:53:47,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:53:47,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:53:47,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:53:47,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:53:47,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:53:47,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:53:47,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:53:47,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:53:47,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:53:47,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:53:47,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:53:47,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:53:47,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:53:48,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:53:48,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:53:48,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:53:48,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:53:48,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:53:48,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:53:48,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:53:48,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:53:48,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:53:48,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:53:48,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:53:48,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:53:48,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:53:48,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:53:48,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:53:48,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:53:48,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:53:48,015 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-VariableLbe.epf [2020-04-18 02:53:48,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:53:48,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:53:48,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:53:48,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:53:48,051 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:53:48,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:53:48,051 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:53:48,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:53:48,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:53:48,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:53:48,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:53:48,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:53:48,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:53:48,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:53:48,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:53:48,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:53:48,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:53:48,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:53:48,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:53:48,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:53:48,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:53:48,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:53:48,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:53:48,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:53:48,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:53:48,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:53:48,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:53:48,056 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:53:48,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:53:48,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:53:48,325 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:53:48,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:53:48,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:53:48,341 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:53:48,341 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:53:48,342 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i [2020-04-18 02:53:48,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674b7fb34/8ba13aa4fa904c48b479a2232d601242/FLAG11db789f2 [2020-04-18 02:53:48,984 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:53:48,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i [2020-04-18 02:53:49,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674b7fb34/8ba13aa4fa904c48b479a2232d601242/FLAG11db789f2 [2020-04-18 02:53:49,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674b7fb34/8ba13aa4fa904c48b479a2232d601242 [2020-04-18 02:53:49,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:53:49,281 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:53:49,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:53:49,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:53:49,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:53:49,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:53:49" (1/1) ... [2020-04-18 02:53:49,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33bbd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49, skipping insertion in model container [2020-04-18 02:53:49,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:53:49" (1/1) ... [2020-04-18 02:53:49,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:53:49,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:53:49,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:53:49,853 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:53:49,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:53:49,981 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:53:49,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49 WrapperNode [2020-04-18 02:53:49,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:53:49,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:53:49,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:53:49,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:53:49,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49" (1/1) ... [2020-04-18 02:53:50,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49" (1/1) ... [2020-04-18 02:53:50,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:53:50,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:53:50,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:53:50,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:53:50,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49" (1/1) ... [2020-04-18 02:53:50,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49" (1/1) ... [2020-04-18 02:53:50,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49" (1/1) ... [2020-04-18 02:53:50,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49" (1/1) ... [2020-04-18 02:53:50,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49" (1/1) ... [2020-04-18 02:53:50,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49" (1/1) ... [2020-04-18 02:53:50,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49" (1/1) ... [2020-04-18 02:53:50,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:53:50,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:53:50,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:53:50,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:53:50,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49" (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 [2020-04-18 02:53:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:53:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:53:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:53:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:53:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:53:50,135 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:53:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:53:50,136 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:53:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:53:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:53:50,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:53:50,138 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:53:50,489 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:53:50,490 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:53:50,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:53:50 BoogieIcfgContainer [2020-04-18 02:53:50,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:53:50,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:53:50,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:53:50,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:53:50,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:53:49" (1/3) ... [2020-04-18 02:53:50,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5822e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:53:50, skipping insertion in model container [2020-04-18 02:53:50,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:53:49" (2/3) ... [2020-04-18 02:53:50,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5822e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:53:50, skipping insertion in model container [2020-04-18 02:53:50,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:53:50" (3/3) ... [2020-04-18 02:53:50,504 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_tso.oepc.i [2020-04-18 02:53:50,515 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:53:50,516 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:53:50,523 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:53:50,524 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:53:50,547 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,547 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,548 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,548 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,548 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,549 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,549 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,549 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,550 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,550 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,550 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,550 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,554 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,555 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,555 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,555 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,560 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,560 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,561 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,561 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:53:50,575 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 02:53:50,591 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:53:50,591 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:53:50,592 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:53:50,592 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:53:50,592 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:53:50,592 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:53:50,592 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:53:50,593 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:53:50,607 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-04-18 02:53:50,609 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 02:53:50,650 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 02:53:50,651 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:53:50,656 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 02:53:50,658 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 02:53:50,679 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 02:53:50,679 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:53:50,681 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 02:53:50,683 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 02:53:50,684 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:53:51,776 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 02:53:52,082 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1294 [2020-04-18 02:53:52,082 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-04-18 02:53:52,089 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 02:53:52,107 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 02:53:52,109 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 02:53:52,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 02:53:52,118 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:52,119 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 02:53:52,120 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:52,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:52,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 1 times [2020-04-18 02:53:52,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:52,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076104138] [2020-04-18 02:53:52,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:53:52,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076104138] [2020-04-18 02:53:52,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:52,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:53:52,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283166211] [2020-04-18 02:53:52,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:53:52,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:52,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:53:52,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:52,414 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-04-18 02:53:52,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:52,479 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-04-18 02:53:52,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:53:52,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-04-18 02:53:52,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:52,493 INFO L225 Difference]: With dead ends: 63 [2020-04-18 02:53:52,493 INFO L226 Difference]: Without dead ends: 40 [2020-04-18 02:53:52,498 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 [2020-04-18 02:53:52,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-18 02:53:52,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-18 02:53:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-18 02:53:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-18 02:53:52,553 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 6 [2020-04-18 02:53:52,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:52,553 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-18 02:53:52,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:53:52,554 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-18 02:53:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:53:52,556 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:52,556 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:52,557 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:52,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:52,558 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 1 times [2020-04-18 02:53:52,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:52,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602615843] [2020-04-18 02:53:52,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:53:52,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602615843] [2020-04-18 02:53:52,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:52,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:53:52,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406087896] [2020-04-18 02:53:52,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:53:52,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:52,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:53:52,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:53:52,700 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-04-18 02:53:52,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:52,741 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-04-18 02:53:52,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:53:52,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 02:53:52,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:52,742 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:53:52,742 INFO L226 Difference]: Without dead ends: 28 [2020-04-18 02:53:52,743 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 [2020-04-18 02:53:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-04-18 02:53:52,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-04-18 02:53:52,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-04-18 02:53:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-04-18 02:53:52,748 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-04-18 02:53:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:52,749 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-04-18 02:53:52,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:53:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-18 02:53:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:53:52,750 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:52,750 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:52,750 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:52,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:52,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 1 times [2020-04-18 02:53:52,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:52,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495905266] [2020-04-18 02:53:52,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:53:52,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495905266] [2020-04-18 02:53:52,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:52,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:53:52,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128591799] [2020-04-18 02:53:52,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:53:52,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:52,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:53:52,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:52,809 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-04-18 02:53:52,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:52,827 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-04-18 02:53:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:53:52,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:53:52,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:52,828 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:53:52,829 INFO L226 Difference]: Without dead ends: 22 [2020-04-18 02:53:52,829 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 [2020-04-18 02:53:52,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-04-18 02:53:52,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-04-18 02:53:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-04-18 02:53:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-04-18 02:53:52,833 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 12 [2020-04-18 02:53:52,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:52,833 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-04-18 02:53:52,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:53:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-18 02:53:52,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:53:52,834 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:53:52,834 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:53:52,834 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:53:52,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:53:52,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1252547174, now seen corresponding path program 2 times [2020-04-18 02:53:52,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:53:52,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866916675] [2020-04-18 02:53:52,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:53:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:53:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:53:52,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866916675] [2020-04-18 02:53:52,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:53:52,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:53:52,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581815917] [2020-04-18 02:53:52,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:53:52,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:53:52,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:53:52,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:53:52,891 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 4 states. [2020-04-18 02:53:52,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:53:52,908 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-04-18 02:53:52,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:53:52,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:53:52,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:53:52,909 INFO L225 Difference]: With dead ends: 21 [2020-04-18 02:53:52,909 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:53:52,909 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 [2020-04-18 02:53:52,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:53:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:53:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:53:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:53:52,910 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 02:53:52,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:53:52,911 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:53:52,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:53:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:53:52,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:53:52,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:53:52 BasicIcfg [2020-04-18 02:53:52,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:53:52,918 INFO L168 Benchmark]: Toolchain (without parser) took 3657.77 ms. Allocated memory was 146.3 MB in the beginning and 244.3 MB in the end (delta: 98.0 MB). Free memory was 101.7 MB in the beginning and 169.8 MB in the end (delta: -68.1 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:52,919 INFO L168 Benchmark]: CDTParser took 1.44 ms. Allocated memory is still 146.3 MB. Free memory is still 121.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:53:52,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.09 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 99.9 MB in the beginning and 161.2 MB in the end (delta: -61.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:52,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.32 ms. Allocated memory is still 203.9 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:52,924 INFO L168 Benchmark]: Boogie Preprocessor took 27.56 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 158.3 MB in the end (delta: 946.8 kB). Peak memory consumption was 946.8 kB. Max. memory is 7.1 GB. [2020-04-18 02:53:52,930 INFO L168 Benchmark]: RCFGBuilder took 423.98 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 138.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:52,932 INFO L168 Benchmark]: TraceAbstraction took 2419.77 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 138.1 MB in the beginning and 169.8 MB in the end (delta: -31.8 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:53:52,944 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.44 ms. Allocated memory is still 146.3 MB. Free memory is still 121.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 700.09 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 99.9 MB in the beginning and 161.2 MB in the end (delta: -61.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.32 ms. Allocated memory is still 203.9 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.56 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 158.3 MB in the end (delta: 946.8 kB). Peak memory consumption was 946.8 kB. Max. memory is 7.1 GB. * RCFGBuilder took 423.98 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 138.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2419.77 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 138.1 MB in the beginning and 169.8 MB in the end (delta: -31.8 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 360 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1294 CheckedPairsTotal, 49 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 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 56 SDtfs, 47 SDslu, 68 SDs, 0 SdLazy, 43 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 817 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...