/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:02:40,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:02:40,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:02:40,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:02:40,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:02:40,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:02:40,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:02:40,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:02:40,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:02:40,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:02:40,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:02:40,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:02:40,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:02:40,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:02:40,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:02:40,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:02:40,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:02:40,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:02:40,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:02:41,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:02:41,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:02:41,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:02:41,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:02:41,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:02:41,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:02:41,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:02:41,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:02:41,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:02:41,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:02:41,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:02:41,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:02:41,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:02:41,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:02:41,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:02:41,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:02:41,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:02:41,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:02:41,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:02:41,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:02:41,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:02:41,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:02:41,018 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-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:02:41,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:02:41,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:02:41,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:02:41,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:02:41,042 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:02:41,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:02:41,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:02:41,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:02:41,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:02:41,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:02:41,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:02:41,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:02:41,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:02:41,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:02:41,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:02:41,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:02:41,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:02:41,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:02:41,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:02:41,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:02:41,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:02:41,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:02:41,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:02:41,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:02:41,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:02:41,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:02:41,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:02:41,047 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:02:41,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:02:41,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:02:41,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:02:41,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:02:41,373 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:02:41,373 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:02:41,374 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i [2020-10-16 05:02:41,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da4d3ce6/9d8e3695b4c04c8db9b0f6277f21f4ed/FLAGa650a09a8 [2020-10-16 05:02:41,989 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:02:41,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i [2020-10-16 05:02:42,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da4d3ce6/9d8e3695b4c04c8db9b0f6277f21f4ed/FLAGa650a09a8 [2020-10-16 05:02:42,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da4d3ce6/9d8e3695b4c04c8db9b0f6277f21f4ed [2020-10-16 05:02:42,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:02:42,303 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:02:42,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:02:42,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:02:42,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:02:42,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:02:42" (1/1) ... [2020-10-16 05:02:42,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e60d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:42, skipping insertion in model container [2020-10-16 05:02:42,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:02:42" (1/1) ... [2020-10-16 05:02:42,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:02:42,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:02:42,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:02:42,870 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:02:42,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:02:43,011 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:02:43,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:43 WrapperNode [2020-10-16 05:02:43,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:02:43,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:02:43,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:02:43,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:02:43,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:43" (1/1) ... [2020-10-16 05:02:43,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:43" (1/1) ... [2020-10-16 05:02:43,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:02:43,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:02:43,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:02:43,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:02:43,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:43" (1/1) ... [2020-10-16 05:02:43,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:43" (1/1) ... [2020-10-16 05:02:43,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:43" (1/1) ... [2020-10-16 05:02:43,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:43" (1/1) ... [2020-10-16 05:02:43,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:43" (1/1) ... [2020-10-16 05:02:43,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:43" (1/1) ... [2020-10-16 05:02:43,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:43" (1/1) ... [2020-10-16 05:02:43,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:02:43,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:02:43,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:02:43,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:02:43,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:02:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:02:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:02:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:02:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:02:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:02:43,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:02:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:02:43,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:02:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:02:43,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:02:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:02:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:02:43,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:02:43,155 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:02:43,497 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:02:43,498 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:02:43,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:02:43 BoogieIcfgContainer [2020-10-16 05:02:43,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:02:43,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:02:43,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:02:43,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:02:43,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:02:42" (1/3) ... [2020-10-16 05:02:43,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3d2047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:02:43, skipping insertion in model container [2020-10-16 05:02:43,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:43" (2/3) ... [2020-10-16 05:02:43,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3d2047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:02:43, skipping insertion in model container [2020-10-16 05:02:43,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:02:43" (3/3) ... [2020-10-16 05:02:43,509 INFO L111 eAbstractionObserver]: Analyzing ICFG safe007_tso.oepc.i [2020-10-16 05:02:43,522 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:02:43,530 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:02:43,531 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:02:43,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,566 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,567 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,568 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,568 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,573 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,574 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,586 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,587 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,587 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,587 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,608 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,608 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,609 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,609 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:43,637 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:02:43,655 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:02:43,656 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:02:43,656 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:02:43,656 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:02:43,656 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:02:43,656 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:02:43,656 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:02:43,656 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:02:43,669 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 05:02:43,715 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-16 05:02:43,715 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:43,720 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 05:02:43,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 05:02:43,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2020-10-16 05:02:43,729 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:02:43,732 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2020-10-16 05:02:43,735 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2020-10-16 05:02:43,736 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2020-10-16 05:02:43,756 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2020-10-16 05:02:43,757 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:43,758 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:02:43,760 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:02:45,119 INFO L132 LiptonReduction]: Checked pairs total: 1796 [2020-10-16 05:02:45,120 INFO L134 LiptonReduction]: Total number of compositions: 44 [2020-10-16 05:02:45,123 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1396 [2020-10-16 05:02:45,132 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 05:02:45,132 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:45,132 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:45,133 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:45,134 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:45,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:45,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1282912004, now seen corresponding path program 1 times [2020-10-16 05:02:45,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:45,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030887001] [2020-10-16 05:02:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:45,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030887001] [2020-10-16 05:02:45,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:45,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:02:45,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17472498] [2020-10-16 05:02:45,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:02:45,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:45,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:02:45,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:02:45,454 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 115 [2020-10-16 05:02:45,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 05:02:45,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:45,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 115 [2020-10-16 05:02:45,459 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:45,480 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:02:45,480 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:45,481 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:02:45,482 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:02:45,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 05:02:45,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:02:45,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:02:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2020-10-16 05:02:45,499 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8608695652173913 [2020-10-16 05:02:45,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2020-10-16 05:02:45,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2020-10-16 05:02:45,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:45,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2020-10-16 05:02:45,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:02:45,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:02:45,517 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:02:45,519 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 297 transitions. [2020-10-16 05:02:45,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 05:02:45,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:02:45,526 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 05:02:45,529 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 05:02:45,530 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:02:45,530 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 05:02:45,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:02:45,531 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:45,531 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:45,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:02:45,532 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:45,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:45,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1130280492, now seen corresponding path program 1 times [2020-10-16 05:02:45,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:45,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56679451] [2020-10-16 05:02:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:45,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56679451] [2020-10-16 05:02:45,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:45,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:45,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219149359] [2020-10-16 05:02:45,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:45,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:45,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:45,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:45,660 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2020-10-16 05:02:45,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 05:02:45,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:45,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2020-10-16 05:02:45,661 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:45,693 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 05:02:45,694 INFO L130 PetriNetUnfolder]: For 5/12 co-relation queries the response was YES. [2020-10-16 05:02:45,694 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 22 events. 0/22 cut-off events. For 5/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 2/24 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:02:45,694 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 05:02:45,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 63 flow [2020-10-16 05:02:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:02:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:02:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2020-10-16 05:02:45,699 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8065217391304348 [2020-10-16 05:02:45,700 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2020-10-16 05:02:45,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2020-10-16 05:02:45,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:45,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2020-10-16 05:02:45,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:02:45,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:02:45,705 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:02:45,705 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 371 transitions. [2020-10-16 05:02:45,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 63 flow [2020-10-16 05:02:45,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 57 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:02:45,707 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 05:02:45,708 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 05:02:45,708 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:02:45,709 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 05:02:45,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:45,709 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:45,709 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:45,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:02:45,710 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:45,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1681712399, now seen corresponding path program 1 times [2020-10-16 05:02:45,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:45,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44623000] [2020-10-16 05:02:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:45,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44623000] [2020-10-16 05:02:45,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:45,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:45,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085889220] [2020-10-16 05:02:45,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:45,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:45,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:45,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:45,776 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2020-10-16 05:02:45,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 05:02:45,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:45,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2020-10-16 05:02:45,778 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:45,811 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2020-10-16 05:02:45,811 INFO L130 PetriNetUnfolder]: For 18/21 co-relation queries the response was YES. [2020-10-16 05:02:45,812 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 25 events. 0/25 cut-off events. For 18/21 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 2/26 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:02:45,812 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 05:02:45,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 18 transitions, 70 flow [2020-10-16 05:02:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:02:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:02:45,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2020-10-16 05:02:45,816 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8065217391304348 [2020-10-16 05:02:45,816 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2020-10-16 05:02:45,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2020-10-16 05:02:45,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:45,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2020-10-16 05:02:45,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:02:45,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:02:45,820 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:02:45,820 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states and 371 transitions. [2020-10-16 05:02:45,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 18 transitions, 70 flow [2020-10-16 05:02:45,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 58 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:02:45,822 INFO L241 Difference]: Finished difference. Result has 31 places, 17 transitions, 60 flow [2020-10-16 05:02:45,823 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=17} [2020-10-16 05:02:45,823 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 05:02:45,823 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 17 transitions, 60 flow [2020-10-16 05:02:45,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:45,824 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:45,824 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:45,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:02:45,824 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:45,825 INFO L82 PathProgramCache]: Analyzing trace with hash 131235208, now seen corresponding path program 1 times [2020-10-16 05:02:45,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:45,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4876222] [2020-10-16 05:02:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:45,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:02:45,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4876222] [2020-10-16 05:02:45,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:45,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:45,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772182831] [2020-10-16 05:02:45,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:45,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:45,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:45,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:45,906 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2020-10-16 05:02:45,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 17 transitions, 60 flow. Second operand 4 states. [2020-10-16 05:02:45,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:45,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2020-10-16 05:02:45,907 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:45,922 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2020-10-16 05:02:45,922 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2020-10-16 05:02:45,922 INFO L80 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 16 events. 0/16 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2020-10-16 05:02:45,923 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2020-10-16 05:02:45,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 16 transitions, 58 flow [2020-10-16 05:02:45,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:02:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:02:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2020-10-16 05:02:45,925 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8021739130434783 [2020-10-16 05:02:45,925 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2020-10-16 05:02:45,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2020-10-16 05:02:45,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:45,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2020-10-16 05:02:45,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:02:45,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:02:45,928 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:02:45,929 INFO L185 Difference]: Start difference. First operand has 31 places, 17 transitions, 60 flow. Second operand 4 states and 369 transitions. [2020-10-16 05:02:45,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 16 transitions, 58 flow [2020-10-16 05:02:45,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 16 transitions, 44 flow, removed 0 selfloop flow, removed 7 redundant places. [2020-10-16 05:02:45,930 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2020-10-16 05:02:45,930 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2020-10-16 05:02:45,930 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2020-10-16 05:02:45,931 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2020-10-16 05:02:45,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:45,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:02:45,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:02:45 BasicIcfg [2020-10-16 05:02:45,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:02:45,938 INFO L168 Benchmark]: Toolchain (without parser) took 3635.24 ms. Allocated memory was 251.1 MB in the beginning and 368.1 MB in the end (delta: 116.9 MB). Free memory was 207.1 MB in the beginning and 331.6 MB in the end (delta: -124.4 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:02:45,939 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 251.1 MB. Free memory was 229.2 MB in the beginning and 228.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 05:02:45,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.05 ms. Allocated memory was 251.1 MB in the beginning and 312.5 MB in the end (delta: 61.3 MB). Free memory was 206.3 MB in the beginning and 266.9 MB in the end (delta: -60.7 MB). Peak memory consumption was 32.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:45,941 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.66 ms. Allocated memory is still 312.5 MB. Free memory was 266.9 MB in the beginning and 265.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:45,942 INFO L168 Benchmark]: Boogie Preprocessor took 27.60 ms. Allocated memory is still 312.5 MB. Free memory was 265.1 MB in the beginning and 263.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:45,943 INFO L168 Benchmark]: RCFGBuilder took 411.19 ms. Allocated memory is still 312.5 MB. Free memory was 263.4 MB in the beginning and 240.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:45,944 INFO L168 Benchmark]: TraceAbstraction took 2434.17 ms. Allocated memory was 312.5 MB in the beginning and 368.1 MB in the end (delta: 55.6 MB). Free memory was 240.5 MB in the beginning and 331.6 MB in the end (delta: -91.1 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:02:45,948 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 251.1 MB. Free memory was 229.2 MB in the beginning and 228.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 708.05 ms. Allocated memory was 251.1 MB in the beginning and 312.5 MB in the end (delta: 61.3 MB). Free memory was 206.3 MB in the beginning and 266.9 MB in the end (delta: -60.7 MB). Peak memory consumption was 32.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.66 ms. Allocated memory is still 312.5 MB. Free memory was 266.9 MB in the beginning and 265.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.60 ms. Allocated memory is still 312.5 MB. Free memory was 265.1 MB in the beginning and 263.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 411.19 ms. Allocated memory is still 312.5 MB. Free memory was 263.4 MB in the beginning and 240.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2434.17 ms. Allocated memory was 312.5 MB in the beginning and 368.1 MB in the end (delta: 55.6 MB). Free memory was 240.5 MB in the beginning and 331.6 MB in the end (delta: -91.1 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 648 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 100 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 66 PlacesBefore, 27 PlacesAfterwards, 57 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 1796 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 12 SDtfs, 3 SDslu, 2 SDs, 0 SdLazy, 14 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1071 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...