/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 18:54:30,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 18:54:30,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 18:54:30,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 18:54:30,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 18:54:30,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 18:54:30,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 18:54:30,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 18:54:30,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 18:54:30,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 18:54:30,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 18:54:30,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 18:54:30,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 18:54:30,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 18:54:31,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 18:54:31,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 18:54:31,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 18:54:31,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 18:54:31,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 18:54:31,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 18:54:31,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 18:54:31,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 18:54:31,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 18:54:31,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 18:54:31,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 18:54:31,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 18:54:31,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 18:54:31,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 18:54:31,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 18:54:31,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 18:54:31,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 18:54:31,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 18:54:31,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 18:54:31,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 18:54:31,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 18:54:31,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 18:54:31,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 18:54:31,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 18:54:31,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 18:54:31,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 18:54:31,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 18:54:31,037 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.epf [2021-03-11 18:54:31,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 18:54:31,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 18:54:31,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 18:54:31,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 18:54:31,075 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 18:54:31,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 18:54:31,075 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 18:54:31,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 18:54:31,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 18:54:31,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 18:54:31,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 18:54:31,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 18:54:31,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 18:54:31,077 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 18:54:31,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 18:54:31,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 18:54:31,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 18:54:31,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 18:54:31,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 18:54:31,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 18:54:31,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 18:54:31,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 18:54:31,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 18:54:31,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 18:54:31,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 18:54:31,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 18:54:31,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 18:54:31,079 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 18:54:31,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 18:54:31,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 18:54:31,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 18:54:31,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 18:54:31,396 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 18:54:31,397 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 18:54:31,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2021-03-11 18:54:31,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77a7cbf2/e8747e2318a94c40aa0a8435e289c2c6/FLAGfbbbef030 [2021-03-11 18:54:31,910 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 18:54:31,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2021-03-11 18:54:31,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77a7cbf2/e8747e2318a94c40aa0a8435e289c2c6/FLAGfbbbef030 [2021-03-11 18:54:32,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77a7cbf2/e8747e2318a94c40aa0a8435e289c2c6 [2021-03-11 18:54:32,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 18:54:32,220 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 18:54:32,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 18:54:32,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 18:54:32,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 18:54:32,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 06:54:32" (1/1) ... [2021-03-11 18:54:32,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a59bd44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32, skipping insertion in model container [2021-03-11 18:54:32,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 06:54:32" (1/1) ... [2021-03-11 18:54:32,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 18:54:32,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 18:54:32,518 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i[30826,30839] [2021-03-11 18:54:32,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 18:54:32,529 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 18:54:32,559 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i[30826,30839] [2021-03-11 18:54:32,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 18:54:32,623 INFO L208 MainTranslator]: Completed translation [2021-03-11 18:54:32,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32 WrapperNode [2021-03-11 18:54:32,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 18:54:32,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 18:54:32,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 18:54:32,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 18:54:32,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32" (1/1) ... [2021-03-11 18:54:32,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32" (1/1) ... [2021-03-11 18:54:32,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 18:54:32,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 18:54:32,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 18:54:32,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 18:54:32,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32" (1/1) ... [2021-03-11 18:54:32,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32" (1/1) ... [2021-03-11 18:54:32,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32" (1/1) ... [2021-03-11 18:54:32,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32" (1/1) ... [2021-03-11 18:54:32,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32" (1/1) ... [2021-03-11 18:54:32,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32" (1/1) ... [2021-03-11 18:54:32,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32" (1/1) ... [2021-03-11 18:54:32,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 18:54:32,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 18:54:32,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 18:54:32,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 18:54:32,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32" (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 [2021-03-11 18:54:32,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 18:54:32,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 18:54:32,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 18:54:32,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 18:54:32,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 18:54:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 18:54:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-11 18:54:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 18:54:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 18:54:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 18:54:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 18:54:32,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 18:54:32,724 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 18:54:33,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 18:54:33,009 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 18:54:33,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:54:33 BoogieIcfgContainer [2021-03-11 18:54:33,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 18:54:33,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 18:54:33,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 18:54:33,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 18:54:33,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 06:54:32" (1/3) ... [2021-03-11 18:54:33,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4ac059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 06:54:33, skipping insertion in model container [2021-03-11 18:54:33,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:32" (2/3) ... [2021-03-11 18:54:33,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4ac059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 06:54:33, skipping insertion in model container [2021-03-11 18:54:33,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:54:33" (3/3) ... [2021-03-11 18:54:33,025 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2021-03-11 18:54:33,030 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 18:54:33,034 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 18:54:33,035 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 18:54:33,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,096 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,096 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,097 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,097 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,099 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,099 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,100 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,100 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,100 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,100 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,100 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,100 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,101 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,101 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,102 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,103 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,103 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,104 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,104 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,105 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,106 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,106 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,110 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,110 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,111 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,111 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,111 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,112 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,112 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,112 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,112 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,115 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,115 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,116 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,116 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,117 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,121 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,121 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,121 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,121 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,122 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,122 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,122 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,122 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,129 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,129 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,130 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,130 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,130 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,130 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:33,144 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-11 18:54:33,159 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 18:54:33,190 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 18:54:33,190 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 18:54:33,190 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 18:54:33,190 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 18:54:33,190 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 18:54:33,190 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 18:54:33,191 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 18:54:33,191 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 18:54:33,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 83 transitions, 188 flow [2021-03-11 18:54:33,276 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-03-11 18:54:33,277 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 18:54:33,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 83 events. 2/83 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 28. Up to 3 conditions per place. [2021-03-11 18:54:33,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 83 transitions, 188 flow [2021-03-11 18:54:33,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 71 transitions, 160 flow [2021-03-11 18:54:33,294 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 18:54:33,302 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 71 transitions, 160 flow [2021-03-11 18:54:33,304 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 71 transitions, 160 flow [2021-03-11 18:54:33,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 71 transitions, 160 flow [2021-03-11 18:54:33,334 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-03-11 18:54:33,335 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 18:54:33,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 73 events. 1/73 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 19. Up to 3 conditions per place. [2021-03-11 18:54:33,337 INFO L116 LiptonReduction]: Number of co-enabled transitions 680 [2021-03-11 18:54:35,715 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2021-03-11 18:54:36,065 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2021-03-11 18:54:36,564 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2021-03-11 18:54:36,764 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-03-11 18:54:37,103 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2021-03-11 18:54:37,274 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-03-11 18:54:37,284 INFO L131 LiptonReduction]: Checked pairs total: 3637 [2021-03-11 18:54:37,284 INFO L133 LiptonReduction]: Total number of compositions: 44 [2021-03-11 18:54:37,286 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3995 [2021-03-11 18:54:37,294 INFO L129 PetriNetUnfolder]: 1/28 cut-off events. [2021-03-11 18:54:37,294 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 18:54:37,295 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 18:54:37,295 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] [2021-03-11 18:54:37,295 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 18:54:37,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:54:37,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1012374334, now seen corresponding path program 1 times [2021-03-11 18:54:37,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:54:37,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099640608] [2021-03-11 18:54:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:54:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 18:54:37,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:37,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 18:54:37,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:37,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 18:54:37,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:37,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-11 18:54:37,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:37,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 18:54:37,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:37,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 18:54:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 18:54:37,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099640608] [2021-03-11 18:54:37,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 18:54:37,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 18:54:37,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622399097] [2021-03-11 18:54:37,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 18:54:37,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 18:54:37,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 18:54:37,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 18:54:37,514 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 127 [2021-03-11 18:54:37,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 18:54:37,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 127 [2021-03-11 18:54:37,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 18:54:37,552 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-03-11 18:54:37,552 INFO L130 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2021-03-11 18:54:37,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 28 events. 0/28 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 2/30 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-11 18:54:37,553 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 4 selfloop transitions, 4 changer transitions 1/26 dead transitions. [2021-03-11 18:54:37,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 83 flow [2021-03-11 18:54:37,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 18:54:37,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 18:54:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2021-03-11 18:54:37,564 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6047244094488189 [2021-03-11 18:54:37,565 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 384 transitions. [2021-03-11 18:54:37,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 384 transitions. [2021-03-11 18:54:37,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 18:54:37,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 384 transitions. [2021-03-11 18:54:37,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,577 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,578 INFO L185 Difference]: Start difference. First operand has 32 places, 27 transitions, 72 flow. Second operand 5 states and 384 transitions. [2021-03-11 18:54:37,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 83 flow [2021-03-11 18:54:37,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 73 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 18:54:37,582 INFO L241 Difference]: Finished difference. Result has 32 places, 25 transitions, 62 flow [2021-03-11 18:54:37,583 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2021-03-11 18:54:37,584 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2021-03-11 18:54:37,584 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 62 flow [2021-03-11 18:54:37,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,584 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 18:54:37,584 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] [2021-03-11 18:54:37,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 18:54:37,585 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 18:54:37,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:54:37,585 INFO L82 PathProgramCache]: Analyzing trace with hash 177009290, now seen corresponding path program 1 times [2021-03-11 18:54:37,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:54:37,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206755405] [2021-03-11 18:54:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:54:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 18:54:37,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:37,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 18:54:37,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:37,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 18:54:37,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:37,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 18:54:37,714 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 18:54:37,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 18:54:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 18:54:37,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206755405] [2021-03-11 18:54:37,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 18:54:37,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 18:54:37,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218042958] [2021-03-11 18:54:37,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 18:54:37,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 18:54:37,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 18:54:37,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 18:54:37,727 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 127 [2021-03-11 18:54:37,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 62 flow. Second operand has 6 states, 6 states have (on average 107.16666666666667) internal successors, (643), 6 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 18:54:37,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 127 [2021-03-11 18:54:37,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 18:54:37,805 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-03-11 18:54:37,805 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 18:54:37,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 220 event pairs, 0 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 67. Up to 6 conditions per place. [2021-03-11 18:54:37,806 INFO L132 encePairwiseOnDemand]: 121/127 looper letters, 6 selfloop transitions, 6 changer transitions 4/34 dead transitions. [2021-03-11 18:54:37,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 112 flow [2021-03-11 18:54:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 18:54:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 18:54:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 971 transitions. [2021-03-11 18:54:37,811 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8495188101487314 [2021-03-11 18:54:37,811 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 971 transitions. [2021-03-11 18:54:37,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 971 transitions. [2021-03-11 18:54:37,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 18:54:37,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 971 transitions. [2021-03-11 18:54:37,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 127.0) internal successors, (1270), 10 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,819 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 127.0) internal successors, (1270), 10 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,819 INFO L185 Difference]: Start difference. First operand has 32 places, 25 transitions, 62 flow. Second operand 9 states and 971 transitions. [2021-03-11 18:54:37,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 112 flow [2021-03-11 18:54:37,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 104 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 18:54:37,821 INFO L241 Difference]: Finished difference. Result has 42 places, 29 transitions, 95 flow [2021-03-11 18:54:37,821 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=95, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2021-03-11 18:54:37,821 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2021-03-11 18:54:37,821 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 95 flow [2021-03-11 18:54:37,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 107.16666666666667) internal successors, (643), 6 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,822 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 18:54:37,822 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] [2021-03-11 18:54:37,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 18:54:37,822 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 18:54:37,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:54:37,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1350708872, now seen corresponding path program 2 times [2021-03-11 18:54:37,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:54:37,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971937742] [2021-03-11 18:54:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:54:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 18:54:37,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:37,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 18:54:37,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:37,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 18:54:37,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:37,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 18:54:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 18:54:37,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971937742] [2021-03-11 18:54:37,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 18:54:37,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 18:54:37,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895475996] [2021-03-11 18:54:37,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 18:54:37,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 18:54:37,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 18:54:37,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 18:54:37,887 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 127 [2021-03-11 18:54:37,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 18:54:37,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 127 [2021-03-11 18:54:37,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 18:54:37,919 INFO L129 PetriNetUnfolder]: 2/44 cut-off events. [2021-03-11 18:54:37,919 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-11 18:54:37,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 44 events. 2/44 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 2 based on Foata normal form. 6/50 useless extension candidates. Maximal degree in co-relation 78. Up to 10 conditions per place. [2021-03-11 18:54:37,921 INFO L132 encePairwiseOnDemand]: 119/127 looper letters, 1 selfloop transitions, 8 changer transitions 1/26 dead transitions. [2021-03-11 18:54:37,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 26 transitions, 96 flow [2021-03-11 18:54:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 18:54:37,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 18:54:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2021-03-11 18:54:37,923 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6876640419947506 [2021-03-11 18:54:37,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2021-03-11 18:54:37,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2021-03-11 18:54:37,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 18:54:37,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2021-03-11 18:54:37,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,925 INFO L185 Difference]: Start difference. First operand has 42 places, 29 transitions, 95 flow. Second operand 3 states and 262 transitions. [2021-03-11 18:54:37,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 26 transitions, 96 flow [2021-03-11 18:54:37,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 86 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-11 18:54:37,928 INFO L241 Difference]: Finished difference. Result has 34 places, 25 transitions, 78 flow [2021-03-11 18:54:37,928 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2021-03-11 18:54:37,928 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2021-03-11 18:54:37,928 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 78 flow [2021-03-11 18:54:37,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:37,928 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 18:54:37,928 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] [2021-03-11 18:54:37,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 18:54:37,929 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 18:54:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:54:37,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1766543110, now seen corresponding path program 3 times [2021-03-11 18:54:37,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:54:37,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47822940] [2021-03-11 18:54:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:54:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 18:54:37,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:37,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 18:54:38,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:38,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 18:54:38,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:38,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 18:54:38,016 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 18:54:38,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 18:54:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 18:54:38,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47822940] [2021-03-11 18:54:38,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 18:54:38,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 18:54:38,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424650658] [2021-03-11 18:54:38,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 18:54:38,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 18:54:38,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 18:54:38,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 18:54:38,029 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 127 [2021-03-11 18:54:38,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 107.16666666666667) internal successors, (643), 6 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:38,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 18:54:38,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 127 [2021-03-11 18:54:38,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 18:54:38,060 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2021-03-11 18:54:38,061 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 18:54:38,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 42 events. 2/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 2 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 58. Up to 9 conditions per place. [2021-03-11 18:54:38,061 INFO L132 encePairwiseOnDemand]: 121/127 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2021-03-11 18:54:38,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 24 transitions, 88 flow [2021-03-11 18:54:38,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 18:54:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 18:54:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 749 transitions. [2021-03-11 18:54:38,065 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.84251968503937 [2021-03-11 18:54:38,065 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 749 transitions. [2021-03-11 18:54:38,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 749 transitions. [2021-03-11 18:54:38,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 18:54:38,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 749 transitions. [2021-03-11 18:54:38,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:38,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:38,070 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:38,070 INFO L185 Difference]: Start difference. First operand has 34 places, 25 transitions, 78 flow. Second operand 7 states and 749 transitions. [2021-03-11 18:54:38,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 24 transitions, 88 flow [2021-03-11 18:54:38,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 24 transitions, 76 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-11 18:54:38,071 INFO L241 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2021-03-11 18:54:38,071 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2021-03-11 18:54:38,071 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-11 18:54:38,072 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2021-03-11 18:54:38,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 107.16666666666667) internal successors, (643), 6 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:38,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 18:54:38,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 06:54:38 BasicIcfg [2021-03-11 18:54:38,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 18:54:38,077 INFO L168 Benchmark]: Toolchain (without parser) took 5858.93 ms. Allocated memory was 255.9 MB in the beginning and 463.5 MB in the end (delta: 207.6 MB). Free memory was 234.9 MB in the beginning and 325.7 MB in the end (delta: -90.8 MB). Peak memory consumption was 115.2 MB. Max. memory is 16.0 GB. [2021-03-11 18:54:38,077 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 18:54:38,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.79 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 234.5 MB in the beginning and 349.9 MB in the end (delta: -115.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 18:54:38,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.90 ms. Allocated memory is still 385.9 MB. Free memory was 349.9 MB in the beginning and 347.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 18:54:38,083 INFO L168 Benchmark]: Boogie Preprocessor took 16.78 ms. Allocated memory is still 385.9 MB. Free memory was 347.9 MB in the beginning and 346.9 MB in the end (delta: 970.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 18:54:38,084 INFO L168 Benchmark]: RCFGBuilder took 336.41 ms. Allocated memory is still 385.9 MB. Free memory was 346.5 MB in the beginning and 322.7 MB in the end (delta: 23.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 18:54:38,084 INFO L168 Benchmark]: TraceAbstraction took 5056.09 ms. Allocated memory was 385.9 MB in the beginning and 463.5 MB in the end (delta: 77.6 MB). Free memory was 322.3 MB in the beginning and 325.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 75.1 MB. Max. memory is 16.0 GB. [2021-03-11 18:54:38,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 402.79 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 234.5 MB in the beginning and 349.9 MB in the end (delta: -115.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.90 ms. Allocated memory is still 385.9 MB. Free memory was 349.9 MB in the beginning and 347.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.78 ms. Allocated memory is still 385.9 MB. Free memory was 347.9 MB in the beginning and 346.9 MB in the end (delta: 970.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 336.41 ms. Allocated memory is still 385.9 MB. Free memory was 346.5 MB in the beginning and 322.7 MB in the end (delta: 23.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5056.09 ms. Allocated memory was 385.9 MB in the beginning and 463.5 MB in the end (delta: 77.6 MB). Free memory was 322.3 MB in the beginning and 325.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 75.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3980.0ms, 76 PlacesBefore, 32 PlacesAfterwards, 71 TransitionsBefore, 27 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 7 FixpointIterations, 30 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 3637 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2123, positive: 1921, positive conditional: 0, positive unconditional: 1921, negative: 202, negative conditional: 0, negative unconditional: 202, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 518, positive: 480, positive conditional: 0, positive unconditional: 480, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 518, positive: 466, positive conditional: 0, positive unconditional: 466, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 161, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 122, negative conditional: 0, negative unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2123, positive: 1441, positive conditional: 0, positive unconditional: 1441, negative: 164, negative conditional: 0, negative unconditional: 164, unknown: 518, unknown conditional: 0, unknown unconditional: 518] , Statistics on independence cache: Total cache size (in pairs): 178, Positive cache size: 156, Positive conditional cache size: 0, Positive unconditional cache size: 156, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - PositiveResult [Line: 727]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4887.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 256.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4099.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 16 SDslu, 14 SDs, 0 SdLazy, 67 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=2, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.8ms SsaConstructionTime, 106.3ms SatisfiabilityAnalysisTime, 285.2ms InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 494 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...