/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 18:55:57,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 18:55:57,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 18:55:57,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 18:55:57,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 18:55:57,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 18:55:57,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 18:55:57,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 18:55:57,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 18:55:57,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 18:55:57,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 18:55:57,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 18:55:57,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 18:55:57,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 18:55:57,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 18:55:57,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 18:55:57,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 18:55:57,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 18:55:57,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 18:55:57,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 18:55:57,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 18:55:57,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 18:55:57,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 18:55:57,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 18:55:57,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 18:55:57,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 18:55:57,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 18:55:57,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 18:55:57,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 18:55:57,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 18:55:57,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 18:55:57,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 18:55:57,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 18:55:57,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 18:55:57,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 18:55:57,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 18:55:57,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 18:55:58,024 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 18:55:58,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 18:55:58,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 18:55:58,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 18:55:58,027 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 18:55:58,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 18:55:58,027 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 18:55:58,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 18:55:58,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 18:55:58,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 18:55:58,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 18:55:58,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 18:55:58,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 18:55:58,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 18:55:58,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 18:55:58,030 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 18:55:58,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 18:55:58,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 18:55:58,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 18:55:58,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 18:55:58,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 18:55:58,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:55:58,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 18:55:58,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 18:55:58,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 18:55:58,032 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 18:55:58,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 18:55:58,032 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 18:55:58,032 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 18:55:58,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 18:55:58,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 18:55:58,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 18:55:58,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 18:55:58,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 18:55:58,348 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 18:55:58,349 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2020-10-09 18:55:58,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a067e502/0333646ead974b0994f3edc88e9b04b3/FLAG26ca70c4e [2020-10-09 18:55:58,916 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 18:55:58,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2020-10-09 18:55:58,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a067e502/0333646ead974b0994f3edc88e9b04b3/FLAG26ca70c4e [2020-10-09 18:55:59,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a067e502/0333646ead974b0994f3edc88e9b04b3 [2020-10-09 18:55:59,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 18:55:59,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 18:55:59,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 18:55:59,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 18:55:59,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 18:55:59,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:55:59" (1/1) ... [2020-10-09 18:55:59,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a97c254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59, skipping insertion in model container [2020-10-09 18:55:59,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:55:59" (1/1) ... [2020-10-09 18:55:59,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 18:55:59,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 18:55:59,533 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-09 18:55:59,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:55:59,847 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 18:55:59,863 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-09 18:55:59,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:55:59,975 INFO L208 MainTranslator]: Completed translation [2020-10-09 18:55:59,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59 WrapperNode [2020-10-09 18:55:59,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 18:55:59,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 18:55:59,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 18:55:59,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 18:55:59,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59" (1/1) ... [2020-10-09 18:56:00,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59" (1/1) ... [2020-10-09 18:56:00,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 18:56:00,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 18:56:00,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 18:56:00,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 18:56:00,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59" (1/1) ... [2020-10-09 18:56:00,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59" (1/1) ... [2020-10-09 18:56:00,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59" (1/1) ... [2020-10-09 18:56:00,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59" (1/1) ... [2020-10-09 18:56:00,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59" (1/1) ... [2020-10-09 18:56:00,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59" (1/1) ... [2020-10-09 18:56:00,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59" (1/1) ... [2020-10-09 18:56:00,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 18:56:00,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 18:56:00,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 18:56:00,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 18:56:00,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59" (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 [2020-10-09 18:56:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 18:56:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 18:56:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-09 18:56:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 18:56:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 18:56:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-09 18:56:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-10-09 18:56:00,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-10-09 18:56:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 18:56:00,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 18:56:00,121 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 18:56:00,483 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 18:56:00,484 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-09 18:56:00,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:56:00 BoogieIcfgContainer [2020-10-09 18:56:00,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 18:56:00,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 18:56:00,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 18:56:00,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 18:56:00,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 06:55:59" (1/3) ... [2020-10-09 18:56:00,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69259964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:56:00, skipping insertion in model container [2020-10-09 18:56:00,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:55:59" (2/3) ... [2020-10-09 18:56:00,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69259964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:56:00, skipping insertion in model container [2020-10-09 18:56:00,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:56:00" (3/3) ... [2020-10-09 18:56:00,494 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2020-10-09 18:56:00,506 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 18:56:00,514 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 18:56:00,515 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 18:56:00,536 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,536 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,536 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,536 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,537 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,537 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,538 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,538 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,538 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,538 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,542 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,542 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,543 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,543 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,543 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,543 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:00,562 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-09 18:56:00,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 18:56:00,581 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 18:56:00,581 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 18:56:00,581 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 18:56:00,581 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 18:56:00,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 18:56:00,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 18:56:00,582 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 18:56:00,600 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 58 places, 59 transitions, 126 flow [2020-10-09 18:56:00,643 INFO L129 PetriNetUnfolder]: 5/58 cut-off events. [2020-10-09 18:56:00,644 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-09 18:56:00,648 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 5/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2020-10-09 18:56:00,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 59 transitions, 126 flow [2020-10-09 18:56:00,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 52 transitions, 107 flow [2020-10-09 18:56:00,674 INFO L129 PetriNetUnfolder]: 5/49 cut-off events. [2020-10-09 18:56:00,675 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:56:00,675 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:56:00,676 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:56:00,676 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:56:00,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:56:00,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1820809621, now seen corresponding path program 1 times [2020-10-09 18:56:00,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:56:00,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129239404] [2020-10-09 18:56:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 18:56:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:56:00,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-09 18:56:00,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:56:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:56:00,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:56:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:56:00,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129239404] [2020-10-09 18:56:00,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:56:00,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-09 18:56:00,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42657337] [2020-10-09 18:56:00,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-09 18:56:00,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:56:00,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-09 18:56:00,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-09 18:56:00,865 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 59 [2020-10-09 18:56:00,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 107 flow. Second operand 2 states. [2020-10-09 18:56:00,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:56:00,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 59 [2020-10-09 18:56:00,869 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:56:00,891 INFO L129 PetriNetUnfolder]: 2/49 cut-off events. [2020-10-09 18:56:00,892 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:56:00,892 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 49 events. 2/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 3/49 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2020-10-09 18:56:00,894 INFO L132 encePairwiseOnDemand]: 56/59 looper letters, 0 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2020-10-09 18:56:00,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 101 flow [2020-10-09 18:56:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-09 18:56:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-09 18:56:00,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 115 transitions. [2020-10-09 18:56:00,909 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9745762711864406 [2020-10-09 18:56:00,910 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 115 transitions. [2020-10-09 18:56:00,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 115 transitions. [2020-10-09 18:56:00,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:56:00,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 115 transitions. [2020-10-09 18:56:00,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-09 18:56:00,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-09 18:56:00,924 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-09 18:56:00,926 INFO L185 Difference]: Start difference. First operand has 51 places, 52 transitions, 107 flow. Second operand 2 states and 115 transitions. [2020-10-09 18:56:00,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 101 flow [2020-10-09 18:56:00,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-09 18:56:00,935 INFO L241 Difference]: Finished difference. Result has 51 places, 49 transitions, 100 flow [2020-10-09 18:56:00,938 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2020-10-09 18:56:00,939 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2020-10-09 18:56:00,940 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 100 flow [2020-10-09 18:56:00,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-09 18:56:00,940 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:56:00,940 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:56:01,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 18:56:01,154 INFO L429 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:56:01,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:56:01,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1820808660, now seen corresponding path program 1 times [2020-10-09 18:56:01,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:56:01,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24446082] [2020-10-09 18:56:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 18:56:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:56:01,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-09 18:56:01,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:56:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:56:01,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:56:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:56:01,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24446082] [2020-10-09 18:56:01,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:56:01,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-09 18:56:01,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711182699] [2020-10-09 18:56:01,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 18:56:01,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:56:01,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 18:56:01,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 18:56:01,314 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 59 [2020-10-09 18:56:01,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 100 flow. Second operand 4 states. [2020-10-09 18:56:01,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:56:01,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 59 [2020-10-09 18:56:01,315 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:56:01,346 INFO L129 PetriNetUnfolder]: 3/56 cut-off events. [2020-10-09 18:56:01,346 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:56:01,347 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 56 events. 3/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2020-10-09 18:56:01,348 INFO L132 encePairwiseOnDemand]: 55/59 looper letters, 2 selfloop transitions, 2 changer transitions 6/51 dead transitions. [2020-10-09 18:56:01,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 116 flow [2020-10-09 18:56:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 18:56:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-09 18:56:01,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2020-10-09 18:56:01,351 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9152542372881356 [2020-10-09 18:56:01,352 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 216 transitions. [2020-10-09 18:56:01,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 216 transitions. [2020-10-09 18:56:01,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:56:01,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 216 transitions. [2020-10-09 18:56:01,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-09 18:56:01,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-09 18:56:01,357 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-09 18:56:01,357 INFO L185 Difference]: Start difference. First operand has 51 places, 49 transitions, 100 flow. Second operand 4 states and 216 transitions. [2020-10-09 18:56:01,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 116 flow [2020-10-09 18:56:01,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 116 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-09 18:56:01,362 INFO L241 Difference]: Finished difference. Result has 57 places, 45 transitions, 106 flow [2020-10-09 18:56:01,362 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2020-10-09 18:56:01,363 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2020-10-09 18:56:01,363 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 106 flow [2020-10-09 18:56:01,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 18:56:01,364 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:56:01,364 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:56:01,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 18:56:01,576 INFO L429 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:56:01,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:56:01,576 INFO L82 PathProgramCache]: Analyzing trace with hash -574225388, now seen corresponding path program 1 times [2020-10-09 18:56:01,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:56:01,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725764327] [2020-10-09 18:56:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 18:56:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:56:01,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-09 18:56:01,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:56:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:56:01,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:56:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:56:01,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725764327] [2020-10-09 18:56:01,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:56:01,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-09 18:56:01,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635467635] [2020-10-09 18:56:01,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 18:56:01,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:56:01,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 18:56:01,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 18:56:01,809 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 59 [2020-10-09 18:56:01,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 106 flow. Second operand 4 states. [2020-10-09 18:56:01,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:56:01,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 59 [2020-10-09 18:56:01,810 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:56:01,845 INFO L129 PetriNetUnfolder]: 2/51 cut-off events. [2020-10-09 18:56:01,845 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-09 18:56:01,846 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 51 events. 2/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 69. Up to 5 conditions per place. [2020-10-09 18:56:01,849 INFO L132 encePairwiseOnDemand]: 55/59 looper letters, 3 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2020-10-09 18:56:01,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 124 flow [2020-10-09 18:56:01,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 18:56:01,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-09 18:56:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2020-10-09 18:56:01,852 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8983050847457628 [2020-10-09 18:56:01,853 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 212 transitions. [2020-10-09 18:56:01,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 212 transitions. [2020-10-09 18:56:01,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:56:01,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 212 transitions. [2020-10-09 18:56:01,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-09 18:56:01,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-09 18:56:01,858 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-09 18:56:01,859 INFO L185 Difference]: Start difference. First operand has 57 places, 45 transitions, 106 flow. Second operand 4 states and 212 transitions. [2020-10-09 18:56:01,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 124 flow [2020-10-09 18:56:01,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 118 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-09 18:56:01,864 INFO L241 Difference]: Finished difference. Result has 54 places, 47 transitions, 122 flow [2020-10-09 18:56:01,865 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2020-10-09 18:56:01,865 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2020-10-09 18:56:01,865 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 122 flow [2020-10-09 18:56:01,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 18:56:01,865 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:56:01,866 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:56:02,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 18:56:02,079 INFO L429 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:56:02,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:56:02,080 INFO L82 PathProgramCache]: Analyzing trace with hash -597326476, now seen corresponding path program 1 times [2020-10-09 18:56:02,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:56:02,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085854441] [2020-10-09 18:56:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 18:56:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:56:02,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-09 18:56:02,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:56:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:56:02,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:56:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:56:02,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085854441] [2020-10-09 18:56:02,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [22324971] [2020-10-09 18:56:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 18:56:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:56:02,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-09 18:56:02,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:56:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:56:02,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:56:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:56:02,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890797507] [2020-10-09 18:56:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 18:56:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:56:02,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-09 18:56:02,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:56:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:56:02,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:56:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:56:02,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 18:56:02,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2020-10-09 18:56:02,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624727807] [2020-10-09 18:56:02,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:56:02,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:56:02,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:56:02,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:56:02,626 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 59 [2020-10-09 18:56:02,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 122 flow. Second operand 8 states. [2020-10-09 18:56:02,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:56:02,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 59 [2020-10-09 18:56:02,627 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:56:02,696 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2020-10-09 18:56:02,696 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-09 18:56:02,697 INFO L80 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 58 events. 2/58 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 2/59 useless extension candidates. Maximal degree in co-relation 95. Up to 5 conditions per place. [2020-10-09 18:56:02,697 INFO L132 encePairwiseOnDemand]: 53/59 looper letters, 7 selfloop transitions, 9 changer transitions 0/54 dead transitions. [2020-10-09 18:56:02,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 177 flow [2020-10-09 18:56:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:56:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:56:02,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 459 transitions. [2020-10-09 18:56:02,701 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.864406779661017 [2020-10-09 18:56:02,701 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 459 transitions. [2020-10-09 18:56:02,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 459 transitions. [2020-10-09 18:56:02,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:56:02,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 459 transitions. [2020-10-09 18:56:02,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:56:02,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:56:02,706 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:56:02,706 INFO L185 Difference]: Start difference. First operand has 54 places, 47 transitions, 122 flow. Second operand 9 states and 459 transitions. [2020-10-09 18:56:02,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 177 flow [2020-10-09 18:56:02,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 177 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-09 18:56:02,710 INFO L241 Difference]: Finished difference. Result has 65 places, 53 transitions, 176 flow [2020-10-09 18:56:02,710 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=176, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2020-10-09 18:56:02,710 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2020-10-09 18:56:02,710 INFO L481 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 176 flow [2020-10-09 18:56:02,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:56:02,711 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:56:02,711 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:56:03,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 18:56:03,327 INFO L429 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:56:03,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:56:03,328 INFO L82 PathProgramCache]: Analyzing trace with hash 171308102, now seen corresponding path program 2 times [2020-10-09 18:56:03,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:56:03,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963706929] [2020-10-09 18:56:03,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-09 18:56:03,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 18:56:03,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 18:56:03,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:56:03,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:56:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-09 18:56:03,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:56:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-09 18:56:03,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963706929] [2020-10-09 18:56:03,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:56:03,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-10-09 18:56:03,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113417250] [2020-10-09 18:56:03,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 18:56:03,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:56:03,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 18:56:03,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-09 18:56:03,593 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 59 [2020-10-09 18:56:03,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 176 flow. Second operand 10 states. [2020-10-09 18:56:03,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:56:03,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 59 [2020-10-09 18:56:03,594 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:56:03,744 INFO L129 PetriNetUnfolder]: 2/56 cut-off events. [2020-10-09 18:56:03,745 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2020-10-09 18:56:03,745 INFO L80 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 56 events. 2/56 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 116. Up to 5 conditions per place. [2020-10-09 18:56:03,746 INFO L132 encePairwiseOnDemand]: 51/59 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2020-10-09 18:56:03,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 52 transitions, 210 flow [2020-10-09 18:56:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:56:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:56:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 417 transitions. [2020-10-09 18:56:03,749 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7853107344632768 [2020-10-09 18:56:03,749 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 417 transitions. [2020-10-09 18:56:03,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 417 transitions. [2020-10-09 18:56:03,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:56:03,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 417 transitions. [2020-10-09 18:56:03,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:56:03,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:56:03,755 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:56:03,755 INFO L185 Difference]: Start difference. First operand has 65 places, 53 transitions, 176 flow. Second operand 9 states and 417 transitions. [2020-10-09 18:56:03,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 52 transitions, 210 flow [2020-10-09 18:56:03,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 52 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-09 18:56:03,761 INFO L241 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2020-10-09 18:56:03,762 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2020-10-09 18:56:03,762 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2020-10-09 18:56:03,762 INFO L481 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2020-10-09 18:56:03,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 18:56:03,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 18:56:03,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 06:56:03 BasicIcfg [2020-10-09 18:56:03,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 18:56:03,993 INFO L168 Benchmark]: Toolchain (without parser) took 4708.36 ms. Allocated memory was 252.2 MB in the beginning and 376.4 MB in the end (delta: 124.3 MB). Free memory was 205.0 MB in the beginning and 333.0 MB in the end (delta: -127.9 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:56:03,994 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 252.2 MB. Free memory is still 226.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:56:03,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.97 ms. Allocated memory was 252.2 MB in the beginning and 319.8 MB in the end (delta: 67.6 MB). Free memory was 205.0 MB in the beginning and 275.6 MB in the end (delta: -70.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. [2020-10-09 18:56:03,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.49 ms. Allocated memory is still 319.8 MB. Free memory was 275.6 MB in the beginning and 273.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:56:03,997 INFO L168 Benchmark]: Boogie Preprocessor took 29.17 ms. Allocated memory is still 319.8 MB. Free memory was 273.1 MB in the beginning and 270.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:56:03,997 INFO L168 Benchmark]: RCFGBuilder took 426.07 ms. Allocated memory is still 319.8 MB. Free memory was 270.5 MB in the beginning and 248.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-09 18:56:03,998 INFO L168 Benchmark]: TraceAbstraction took 3504.01 ms. Allocated memory was 319.8 MB in the beginning and 376.4 MB in the end (delta: 56.6 MB). Free memory was 248.6 MB in the beginning and 333.0 MB in the end (delta: -84.4 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:56:04,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 252.2 MB. Free memory is still 226.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 688.97 ms. Allocated memory was 252.2 MB in the beginning and 319.8 MB in the end (delta: 67.6 MB). Free memory was 205.0 MB in the beginning and 275.6 MB in the end (delta: -70.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 53.49 ms. Allocated memory is still 319.8 MB. Free memory was 275.6 MB in the beginning and 273.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.17 ms. Allocated memory is still 319.8 MB. Free memory was 273.1 MB in the beginning and 270.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 426.07 ms. Allocated memory is still 319.8 MB. Free memory was 270.5 MB in the beginning and 248.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3504.01 ms. Allocated memory was 319.8 MB in the beginning and 376.4 MB in the end (delta: 56.6 MB). Free memory was 248.6 MB in the beginning and 333.0 MB in the end (delta: -84.4 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 695]: 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 2 procedures, 55 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: 3.4s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 41 SDslu, 15 SDs, 0 SdLazy, 127 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 529 GetRequests, 500 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 267 NumberOfCodeBlocks, 267 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 520 ConstructedInterpolants, 0 QuantifiedInterpolants, 31460 SizeOfPredicates, 15 NumberOfNonLiveVariables, 666 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 36/42 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...