/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 00:03:49,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 00:03:49,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 00:03:49,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 00:03:49,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 00:03:49,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 00:03:49,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 00:03:49,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 00:03:49,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 00:03:49,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 00:03:49,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 00:03:49,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 00:03:49,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 00:03:49,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 00:03:49,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 00:03:49,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 00:03:49,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 00:03:49,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 00:03:49,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 00:03:49,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 00:03:49,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 00:03:49,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 00:03:49,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 00:03:49,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 00:03:49,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 00:03:49,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 00:03:49,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 00:03:49,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 00:03:49,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 00:03:49,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 00:03:49,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 00:03:49,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 00:03:49,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 00:03:49,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 00:03:49,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 00:03:49,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 00:03:49,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-27 00:03:49,102 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 00:03:49,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 00:03:49,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 00:03:49,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 00:03:49,104 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 00:03:49,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 00:03:49,104 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 00:03:49,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 00:03:49,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 00:03:49,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 00:03:49,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 00:03:49,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 00:03:49,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 00:03:49,107 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 00:03:49,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 00:03:49,107 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 00:03:49,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 00:03:49,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 00:03:49,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 00:03:49,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 00:03:49,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 00:03:49,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 00:03:49,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 00:03:49,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 00:03:49,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 00:03:49,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 00:03:49,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 00:03:49,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 00:03:49,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-27 00:03:49,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 00:03:49,384 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 00:03:49,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 00:03:49,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 00:03:49,400 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 00:03:49,400 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 00:03:49,401 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2019-12-27 00:03:49,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6253a13f7/e1ea65d2d19140ff81f33e18a161f861/FLAG91fbcccba [2019-12-27 00:03:49,953 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 00:03:49,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2019-12-27 00:03:49,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6253a13f7/e1ea65d2d19140ff81f33e18a161f861/FLAG91fbcccba [2019-12-27 00:03:50,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6253a13f7/e1ea65d2d19140ff81f33e18a161f861 [2019-12-27 00:03:50,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 00:03:50,302 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 00:03:50,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 00:03:50,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 00:03:50,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 00:03:50,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 12:03:50" (1/1) ... [2019-12-27 00:03:50,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52190dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:50, skipping insertion in model container [2019-12-27 00:03:50,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 12:03:50" (1/1) ... [2019-12-27 00:03:50,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 00:03:50,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 00:03:50,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 00:03:50,922 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 00:03:51,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 00:03:51,108 INFO L208 MainTranslator]: Completed translation [2019-12-27 00:03:51,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:51 WrapperNode [2019-12-27 00:03:51,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 00:03:51,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 00:03:51,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 00:03:51,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 00:03:51,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:51" (1/1) ... [2019-12-27 00:03:51,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:51" (1/1) ... [2019-12-27 00:03:51,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 00:03:51,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 00:03:51,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 00:03:51,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 00:03:51,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:51" (1/1) ... [2019-12-27 00:03:51,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:51" (1/1) ... [2019-12-27 00:03:51,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:51" (1/1) ... [2019-12-27 00:03:51,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:51" (1/1) ... [2019-12-27 00:03:51,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:51" (1/1) ... [2019-12-27 00:03:51,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:51" (1/1) ... [2019-12-27 00:03:51,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:51" (1/1) ... [2019-12-27 00:03:51,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 00:03:51,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 00:03:51,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 00:03:51,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 00:03:51,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:51" (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 [2019-12-27 00:03:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 00:03:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 00:03:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 00:03:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 00:03:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 00:03:51,316 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 00:03:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 00:03:51,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 00:03:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 00:03:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 00:03:51,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 00:03:51,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 00:03:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 00:03:51,322 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 00:03:51,814 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 00:03:51,814 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 00:03:51,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 12:03:51 BoogieIcfgContainer [2019-12-27 00:03:51,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 00:03:51,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 00:03:51,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 00:03:51,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 00:03:51,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 12:03:50" (1/3) ... [2019-12-27 00:03:51,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3482acd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 12:03:51, skipping insertion in model container [2019-12-27 00:03:51,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:51" (2/3) ... [2019-12-27 00:03:51,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3482acd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 12:03:51, skipping insertion in model container [2019-12-27 00:03:51,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 12:03:51" (3/3) ... [2019-12-27 00:03:51,826 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2019-12-27 00:03:51,838 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 00:03:51,838 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 00:03:51,850 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 00:03:51,851 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 00:03:51,893 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,894 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,894 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,894 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,895 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,895 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,895 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,896 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,896 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,896 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,897 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,897 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,897 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,897 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,898 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,898 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,898 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,899 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,902 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,903 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,903 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,903 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,906 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,907 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,907 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,908 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,910 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,911 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,911 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,911 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:51,928 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 00:03:51,950 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 00:03:51,950 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 00:03:51,950 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 00:03:51,951 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 00:03:51,951 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 00:03:51,951 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 00:03:51,951 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 00:03:51,951 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 00:03:51,964 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-27 00:03:51,965 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-27 00:03:52,009 INFO L132 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-27 00:03:52,009 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 00:03:52,018 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 00:03:52,021 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-27 00:03:52,039 INFO L132 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-27 00:03:52,040 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 00:03:52,041 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 00:03:52,043 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 00:03:52,045 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 00:03:53,616 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-12-27 00:03:53,811 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-27 00:03:53,811 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-27 00:03:53,815 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-27 00:03:53,825 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-27 00:03:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-27 00:03:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 00:03:53,834 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:03:53,835 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:03:53,835 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:03:53,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:03:53,841 INFO L82 PathProgramCache]: Analyzing trace with hash -53140901, now seen corresponding path program 1 times [2019-12-27 00:03:53,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:03:53,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16323792] [2019-12-27 00:03:53,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:03:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:03:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:03:54,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16323792] [2019-12-27 00:03:54,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:03:54,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 00:03:54,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504214856] [2019-12-27 00:03:54,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 00:03:54,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:03:54,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 00:03:54,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 00:03:54,123 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-27 00:03:54,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:03:54,181 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-27 00:03:54,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 00:03:54,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 00:03:54,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:03:54,211 INFO L225 Difference]: With dead ends: 42 [2019-12-27 00:03:54,211 INFO L226 Difference]: Without dead ends: 34 [2019-12-27 00:03:54,213 INFO L631 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 [2019-12-27 00:03:54,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-27 00:03:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-27 00:03:54,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-27 00:03:54,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-27 00:03:54,259 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-27 00:03:54,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:03:54,260 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-27 00:03:54,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 00:03:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-27 00:03:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 00:03:54,263 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:03:54,264 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:03:54,264 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:03:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:03:54,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1649012318, now seen corresponding path program 1 times [2019-12-27 00:03:54,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:03:54,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587852800] [2019-12-27 00:03:54,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:03:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:03:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:03:54,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587852800] [2019-12-27 00:03:54,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:03:54,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 00:03:54,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481625277] [2019-12-27 00:03:54,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 00:03:54,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:03:54,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 00:03:54,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 00:03:54,372 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 3 states. [2019-12-27 00:03:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:03:54,380 INFO L93 Difference]: Finished difference Result 32 states and 59 transitions. [2019-12-27 00:03:54,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 00:03:54,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-27 00:03:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:03:54,382 INFO L225 Difference]: With dead ends: 32 [2019-12-27 00:03:54,382 INFO L226 Difference]: Without dead ends: 32 [2019-12-27 00:03:54,383 INFO L631 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 [2019-12-27 00:03:54,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-27 00:03:54,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-27 00:03:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-27 00:03:54,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 59 transitions. [2019-12-27 00:03:54,395 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 59 transitions. Word has length 9 [2019-12-27 00:03:54,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:03:54,395 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 59 transitions. [2019-12-27 00:03:54,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 00:03:54,395 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 59 transitions. [2019-12-27 00:03:54,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 00:03:54,397 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:03:54,397 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:03:54,397 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:03:54,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:03:54,399 INFO L82 PathProgramCache]: Analyzing trace with hash 420225671, now seen corresponding path program 1 times [2019-12-27 00:03:54,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:03:54,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306578991] [2019-12-27 00:03:54,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:03:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:03:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:03:54,592 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306578991] [2019-12-27 00:03:54,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:03:54,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 00:03:54,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369568843] [2019-12-27 00:03:54,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 00:03:54,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:03:54,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 00:03:54,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-27 00:03:54,594 INFO L87 Difference]: Start difference. First operand 32 states and 59 transitions. Second operand 6 states. [2019-12-27 00:03:54,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:03:54,677 INFO L93 Difference]: Finished difference Result 32 states and 57 transitions. [2019-12-27 00:03:54,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 00:03:54,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-27 00:03:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:03:54,678 INFO L225 Difference]: With dead ends: 32 [2019-12-27 00:03:54,679 INFO L226 Difference]: Without dead ends: 24 [2019-12-27 00:03:54,679 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-27 00:03:54,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-27 00:03:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-27 00:03:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-27 00:03:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2019-12-27 00:03:54,684 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 10 [2019-12-27 00:03:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:03:54,685 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2019-12-27 00:03:54,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 00:03:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2019-12-27 00:03:54,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 00:03:54,686 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:03:54,686 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:03:54,686 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:03:54,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:03:54,687 INFO L82 PathProgramCache]: Analyzing trace with hash 868107411, now seen corresponding path program 1 times [2019-12-27 00:03:54,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:03:54,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453205848] [2019-12-27 00:03:54,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:03:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:03:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:03:54,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453205848] [2019-12-27 00:03:54,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:03:54,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 00:03:54,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866390522] [2019-12-27 00:03:54,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 00:03:54,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:03:54,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 00:03:54,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 00:03:54,765 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 4 states. [2019-12-27 00:03:54,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:03:54,788 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2019-12-27 00:03:54,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 00:03:54,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 00:03:54,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:03:54,790 INFO L225 Difference]: With dead ends: 27 [2019-12-27 00:03:54,790 INFO L226 Difference]: Without dead ends: 16 [2019-12-27 00:03:54,790 INFO L631 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 [2019-12-27 00:03:54,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-27 00:03:54,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-27 00:03:54,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-27 00:03:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-27 00:03:54,793 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-12-27 00:03:54,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:03:54,793 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-27 00:03:54,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 00:03:54,793 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-27 00:03:54,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 00:03:54,795 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:03:54,796 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:03:54,796 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:03:54,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:03:54,796 INFO L82 PathProgramCache]: Analyzing trace with hash 144947967, now seen corresponding path program 2 times [2019-12-27 00:03:54,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:03:54,797 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892323073] [2019-12-27 00:03:54,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:03:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:03:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:03:54,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892323073] [2019-12-27 00:03:54,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:03:54,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 00:03:54,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254578241] [2019-12-27 00:03:54,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 00:03:54,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:03:54,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 00:03:54,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 00:03:54,850 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-27 00:03:54,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:03:54,878 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-12-27 00:03:54,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 00:03:54,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 00:03:54,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:03:54,884 INFO L225 Difference]: With dead ends: 18 [2019-12-27 00:03:54,884 INFO L226 Difference]: Without dead ends: 12 [2019-12-27 00:03:54,885 INFO L631 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 [2019-12-27 00:03:54,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-27 00:03:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-27 00:03:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-27 00:03:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-27 00:03:54,888 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-12-27 00:03:54,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:03:54,888 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-27 00:03:54,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 00:03:54,889 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-27 00:03:54,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 00:03:54,889 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:03:54,889 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:03:54,889 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:03:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:03:54,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1810889517, now seen corresponding path program 3 times [2019-12-27 00:03:54,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:03:54,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058903934] [2019-12-27 00:03:54,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:03:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:03:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:03:54,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058903934] [2019-12-27 00:03:54,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:03:54,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 00:03:54,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123212987] [2019-12-27 00:03:54,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 00:03:54,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:03:54,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 00:03:54,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 00:03:54,925 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 4 states. [2019-12-27 00:03:54,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:03:54,940 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-27 00:03:54,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 00:03:54,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 00:03:54,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:03:54,940 INFO L225 Difference]: With dead ends: 11 [2019-12-27 00:03:54,940 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 00:03:54,941 INFO L631 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 [2019-12-27 00:03:54,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 00:03:54,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 00:03:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 00:03:54,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 00:03:54,942 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 00:03:54,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:03:54,942 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 00:03:54,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 00:03:54,942 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 00:03:54,942 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 00:03:54,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 12:03:54 BasicIcfg [2019-12-27 00:03:54,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 00:03:54,949 INFO L168 Benchmark]: Toolchain (without parser) took 4646.92 ms. Allocated memory was 146.3 MB in the beginning and 244.3 MB in the end (delta: 98.0 MB). Free memory was 102.8 MB in the beginning and 114.1 MB in the end (delta: -11.3 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. [2019-12-27 00:03:54,949 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-27 00:03:54,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.92 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 102.4 MB in the beginning and 161.0 MB in the end (delta: -58.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-12-27 00:03:54,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.09 ms. Allocated memory is still 204.5 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 00:03:54,952 INFO L168 Benchmark]: Boogie Preprocessor took 50.10 ms. Allocated memory is still 204.5 MB. Free memory was 159.0 MB in the beginning and 158.1 MB in the end (delta: 976.5 kB). Peak memory consumption was 976.5 kB. Max. memory is 7.1 GB. [2019-12-27 00:03:54,953 INFO L168 Benchmark]: RCFGBuilder took 573.79 ms. Allocated memory is still 204.5 MB. Free memory was 157.1 MB in the beginning and 137.0 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-12-27 00:03:54,954 INFO L168 Benchmark]: TraceAbstraction took 3129.79 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 136.0 MB in the beginning and 114.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2019-12-27 00:03:54,958 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 806.92 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 102.4 MB in the beginning and 161.0 MB in the end (delta: -58.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 81.09 ms. Allocated memory is still 204.5 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.10 ms. Allocated memory is still 204.5 MB. Free memory was 159.0 MB in the beginning and 158.1 MB in the end (delta: 976.5 kB). Peak memory consumption was 976.5 kB. Max. memory is 7.1 GB. * RCFGBuilder took 573.79 ms. Allocated memory is still 204.5 MB. Free memory was 157.1 MB in the beginning and 137.0 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3129.79 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 136.0 MB in the beginning and 114.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 230 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 467 CheckedPairsTotal, 44 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 38 SDslu, 49 SDs, 0 SdLazy, 48 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1459 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...