/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/safe022_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:33:02,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:33:02,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:33:02,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:33:02,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:33:02,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:33:02,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:33:02,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:33:02,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:33:02,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:33:02,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:33:02,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:33:02,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:33:02,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:33:02,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:33:02,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:33:02,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:33:02,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:33:02,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:33:02,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:33:02,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:33:02,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:33:02,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:33:02,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:33:02,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:33:02,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:33:02,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:33:02,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:33:02,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:33:02,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:33:02,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:33:02,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:33:02,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:33:02,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:33:02,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:33:02,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:33:02,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:33:02,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:33:02,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:33:02,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:33:02,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:33:02,891 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 02:33:02,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:33:02,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:33:02,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:33:02,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:33:02,927 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:33:02,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:33:02,928 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:33:02,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:33:02,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:33:02,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:33:02,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:33:02,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:33:02,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:33:02,929 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:33:02,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:33:02,930 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:33:02,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:33:02,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:33:02,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:33:02,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:33:02,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:33:02,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:33:02,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:33:02,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:33:02,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:33:02,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:33:02,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:33:02,932 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:33:02,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:33:02,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:33:03,216 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:33:03,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:33:03,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:33:03,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:33:03,239 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:33:03,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2020-04-18 02:33:03,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d961a152/fcc037fe60534db182144fec2e10b58a/FLAG10bba7ce5 [2020-04-18 02:33:03,891 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:33:03,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2020-04-18 02:33:03,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d961a152/fcc037fe60534db182144fec2e10b58a/FLAG10bba7ce5 [2020-04-18 02:33:04,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d961a152/fcc037fe60534db182144fec2e10b58a [2020-04-18 02:33:04,237 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:33:04,259 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:33:04,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:33:04,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:33:04,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:33:04,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:33:04" (1/1) ... [2020-04-18 02:33:04,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5162adf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04, skipping insertion in model container [2020-04-18 02:33:04,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:33:04" (1/1) ... [2020-04-18 02:33:04,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:33:04,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:33:04,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:33:04,781 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:33:04,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:33:04,949 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:33:04,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04 WrapperNode [2020-04-18 02:33:04,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:33:04,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:33:04,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:33:04,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:33:04,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04" (1/1) ... [2020-04-18 02:33:05,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04" (1/1) ... [2020-04-18 02:33:05,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:33:05,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:33:05,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:33:05,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:33:05,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04" (1/1) ... [2020-04-18 02:33:05,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04" (1/1) ... [2020-04-18 02:33:05,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04" (1/1) ... [2020-04-18 02:33:05,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04" (1/1) ... [2020-04-18 02:33:05,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04" (1/1) ... [2020-04-18 02:33:05,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04" (1/1) ... [2020-04-18 02:33:05,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04" (1/1) ... [2020-04-18 02:33:05,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:33:05,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:33:05,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:33:05,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:33:05,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:33:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:33:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:33:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:33:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:33:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:33:05,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:33:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:33:05,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:33:05,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:33:05,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:33:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:33:05,151 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 02:33:05,516 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:33:05,516 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:33:05,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:33:05 BoogieIcfgContainer [2020-04-18 02:33:05,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:33:05,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:33:05,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:33:05,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:33:05,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:33:04" (1/3) ... [2020-04-18 02:33:05,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce24648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:33:05, skipping insertion in model container [2020-04-18 02:33:05,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:33:04" (2/3) ... [2020-04-18 02:33:05,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce24648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:33:05, skipping insertion in model container [2020-04-18 02:33:05,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:33:05" (3/3) ... [2020-04-18 02:33:05,534 INFO L109 eAbstractionObserver]: Analyzing ICFG safe022_tso.oepc.i [2020-04-18 02:33:05,545 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:33:05,546 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:33:05,553 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:33:05,554 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:33:05,577 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,577 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,577 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,578 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,578 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,578 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,579 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,579 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,579 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,579 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,580 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,580 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,584 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,584 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,585 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,585 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,591 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,591 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,591 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,592 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:33:05,606 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 02:33:05,627 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:33:05,627 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:33:05,627 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:33:05,628 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:33:05,628 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:33:05,628 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:33:05,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:33:05,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:33:05,644 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-04-18 02:33:05,646 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 02:33:05,686 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 02:33:05,686 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:33:05,691 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 32 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 02:33:05,694 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 02:33:05,713 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 02:33:05,713 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:33:05,714 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 32 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 02:33:05,716 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 02:33:05,717 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:33:07,248 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1165 [2020-04-18 02:33:07,249 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-04-18 02:33:07,253 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 02:33:07,266 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 02:33:07,268 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 02:33:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 02:33:07,276 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:33:07,277 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 02:33:07,277 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:33:07,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:33:07,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1988358065, now seen corresponding path program 1 times [2020-04-18 02:33:07,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:33:07,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504600453] [2020-04-18 02:33:07,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:33:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:33:07,539 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 02:33:07,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504600453] [2020-04-18 02:33:07,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:33:07,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:33:07,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796496318] [2020-04-18 02:33:07,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:33:07,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:33:07,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:33:07,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:33:07,576 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 02:33:07,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:33:07,624 INFO L93 Difference]: Finished difference Result 70 states and 149 transitions. [2020-04-18 02:33:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:33:07,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 02:33:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:33:07,656 INFO L225 Difference]: With dead ends: 70 [2020-04-18 02:33:07,659 INFO L226 Difference]: Without dead ends: 54 [2020-04-18 02:33:07,663 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:33:07,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-18 02:33:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-18 02:33:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-18 02:33:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2020-04-18 02:33:07,726 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2020-04-18 02:33:07,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:33:07,727 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2020-04-18 02:33:07,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:33:07,728 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2020-04-18 02:33:07,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 02:33:07,729 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:33:07,729 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:33:07,730 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:33:07,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:33:07,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1509525162, now seen corresponding path program 1 times [2020-04-18 02:33:07,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:33:07,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894415589] [2020-04-18 02:33:07,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:33:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:33:07,850 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 02:33:07,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894415589] [2020-04-18 02:33:07,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:33:07,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:33:07,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106651885] [2020-04-18 02:33:07,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:33:07,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:33:07,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:33:07,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:33:07,855 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand 4 states. [2020-04-18 02:33:07,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:33:07,890 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-04-18 02:33:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:33:07,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-04-18 02:33:07,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:33:07,892 INFO L225 Difference]: With dead ends: 60 [2020-04-18 02:33:07,892 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 02:33:07,893 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 02:33:07,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 02:33:07,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 02:33:07,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 02:33:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-04-18 02:33:07,901 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 7 [2020-04-18 02:33:07,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:33:07,901 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-04-18 02:33:07,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:33:07,901 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-04-18 02:33:07,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:33:07,903 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:33:07,903 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:33:07,903 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:33:07,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:33:07,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1014872071, now seen corresponding path program 1 times [2020-04-18 02:33:07,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:33:07,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371692941] [2020-04-18 02:33:07,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:33:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:33:07,986 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 02:33:07,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371692941] [2020-04-18 02:33:07,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:33:07,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:33:07,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905337162] [2020-04-18 02:33:07,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:33:07,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:33:07,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:33:07,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:33:07,990 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 4 states. [2020-04-18 02:33:08,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:33:08,019 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 02:33:08,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:33:08,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:33:08,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:33:08,021 INFO L225 Difference]: With dead ends: 39 [2020-04-18 02:33:08,021 INFO L226 Difference]: Without dead ends: 29 [2020-04-18 02:33:08,021 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 02:33:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-18 02:33:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-18 02:33:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-18 02:33:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-04-18 02:33:08,026 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-04-18 02:33:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:33:08,026 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-04-18 02:33:08,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:33:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-04-18 02:33:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:33:08,027 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:33:08,028 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:33:08,028 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:33:08,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:33:08,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1964607327, now seen corresponding path program 1 times [2020-04-18 02:33:08,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:33:08,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273616140] [2020-04-18 02:33:08,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:33:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:33:08,089 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 02:33:08,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273616140] [2020-04-18 02:33:08,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:33:08,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:33:08,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704331215] [2020-04-18 02:33:08,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:33:08,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:33:08,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:33:08,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:33:08,095 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 5 states. [2020-04-18 02:33:08,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:33:08,135 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-04-18 02:33:08,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:33:08,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 02:33:08,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:33:08,136 INFO L225 Difference]: With dead ends: 27 [2020-04-18 02:33:08,136 INFO L226 Difference]: Without dead ends: 22 [2020-04-18 02:33:08,137 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 02:33:08,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-04-18 02:33:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-04-18 02:33:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-04-18 02:33:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-04-18 02:33:08,140 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-04-18 02:33:08,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:33:08,140 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-04-18 02:33:08,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:33:08,141 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-18 02:33:08,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:33:08,141 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:33:08,141 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:33:08,142 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:33:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:33:08,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1799382783, now seen corresponding path program 1 times [2020-04-18 02:33:08,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:33:08,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181404583] [2020-04-18 02:33:08,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:33:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:33:08,186 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 02:33:08,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181404583] [2020-04-18 02:33:08,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:33:08,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:33:08,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857298521] [2020-04-18 02:33:08,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:33:08,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:33:08,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:33:08,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:33:08,191 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 4 states. [2020-04-18 02:33:08,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:33:08,207 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-04-18 02:33:08,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:33:08,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:33:08,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:33:08,208 INFO L225 Difference]: With dead ends: 21 [2020-04-18 02:33:08,208 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:33:08,208 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 02:33:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:33:08,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:33:08,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:33:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:33:08,209 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 02:33:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:33:08,210 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:33:08,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:33:08,210 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:33:08,210 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:33:08,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:33:08 BasicIcfg [2020-04-18 02:33:08,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:33:08,217 INFO L168 Benchmark]: Toolchain (without parser) took 3978.01 ms. Allocated memory was 146.8 MB in the beginning and 244.3 MB in the end (delta: 97.5 MB). Free memory was 102.1 MB in the beginning and 162.2 MB in the end (delta: -60.1 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:33:08,218 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 02:33:08,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.31 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 100.2 MB in the beginning and 160.3 MB in the end (delta: -60.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:33:08,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.82 ms. Allocated memory is still 203.9 MB. Free memory was 160.3 MB in the beginning and 158.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:33:08,221 INFO L168 Benchmark]: Boogie Preprocessor took 35.77 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:33:08,222 INFO L168 Benchmark]: RCFGBuilder took 449.98 ms. Allocated memory is still 203.9 MB. Free memory was 156.4 MB in the beginning and 136.9 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:33:08,223 INFO L168 Benchmark]: TraceAbstraction took 2687.77 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 136.3 MB in the beginning and 162.2 MB in the end (delta: -26.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:33:08,227 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 690.31 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 100.2 MB in the beginning and 160.3 MB in the end (delta: -60.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 82.82 ms. Allocated memory is still 203.9 MB. Free memory was 160.3 MB in the beginning and 158.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.77 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.98 ms. Allocated memory is still 203.9 MB. Free memory was 156.4 MB in the beginning and 136.9 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2687.77 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 136.3 MB in the beginning and 162.2 MB in the end (delta: -26.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 350 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1165 CheckedPairsTotal, 48 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: 2.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 60 SDtfs, 48 SDslu, 60 SDs, 0 SdLazy, 45 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 893 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...