/usr/bin/java -Xmx8000000000 -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/weaver/popl20-more-buffer-series.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 21:46:12,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 21:46:12,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 21:46:12,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 21:46:12,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 21:46:12,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 21:46:12,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 21:46:12,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 21:46:12,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 21:46:12,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 21:46:12,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 21:46:12,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 21:46:12,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 21:46:12,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 21:46:12,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 21:46:12,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 21:46:12,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 21:46:12,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 21:46:12,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 21:46:12,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 21:46:12,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 21:46:12,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 21:46:12,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 21:46:12,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 21:46:12,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 21:46:12,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 21:46:12,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 21:46:12,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 21:46:12,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 21:46:12,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 21:46:12,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 21:46:12,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 21:46:12,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 21:46:12,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 21:46:12,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 21:46:12,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 21:46:12,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 21:46:12,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 21:46:12,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 21:46:12,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 21:46:12,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 21:46:12,217 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 [2022-12-05 21:46:12,239 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 21:46:12,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 21:46:12,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 21:46:12,241 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 21:46:12,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 21:46:12,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 21:46:12,242 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 21:46:12,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 21:46:12,242 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 21:46:12,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 21:46:12,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 21:46:12,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 21:46:12,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 21:46:12,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 21:46:12,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 21:46:12,243 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 21:46:12,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 21:46:12,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 21:46:12,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 21:46:12,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 21:46:12,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 21:46:12,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 21:46:12,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 21:46:12,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:46:12,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 21:46:12,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 21:46:12,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 21:46:12,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 21:46:12,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 21:46:12,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 21:46:12,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 21:46:12,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 21:46:12,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 21:46:12,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 21:46:12,543 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 21:46:12,543 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 21:46:12,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2022-12-05 21:46:13,520 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 21:46:13,716 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 21:46:13,716 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2022-12-05 21:46:13,740 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c4baa50/f1cd4160ce7a4d54b30c6492ba55627b/FLAG60b45082d [2022-12-05 21:46:13,753 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c4baa50/f1cd4160ce7a4d54b30c6492ba55627b [2022-12-05 21:46:13,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 21:46:13,756 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 21:46:13,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 21:46:13,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 21:46:13,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 21:46:13,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:46:13" (1/1) ... [2022-12-05 21:46:13,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce35d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:13, skipping insertion in model container [2022-12-05 21:46:13,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:46:13" (1/1) ... [2022-12-05 21:46:13,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 21:46:13,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 21:46:13,909 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,912 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,912 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,920 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,929 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,934 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,934 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,937 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,937 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,945 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-12-05 21:46:13,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:46:13,962 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 21:46:13,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,981 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,982 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,982 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,990 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,990 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,991 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,991 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,991 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,991 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,992 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,992 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,992 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:46:13,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:46:13,998 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-12-05 21:46:14,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:46:14,019 INFO L208 MainTranslator]: Completed translation [2022-12-05 21:46:14,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14 WrapperNode [2022-12-05 21:46:14,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 21:46:14,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 21:46:14,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 21:46:14,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 21:46:14,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14" (1/1) ... [2022-12-05 21:46:14,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14" (1/1) ... [2022-12-05 21:46:14,057 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 350 [2022-12-05 21:46:14,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 21:46:14,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 21:46:14,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 21:46:14,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 21:46:14,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14" (1/1) ... [2022-12-05 21:46:14,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14" (1/1) ... [2022-12-05 21:46:14,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14" (1/1) ... [2022-12-05 21:46:14,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14" (1/1) ... [2022-12-05 21:46:14,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14" (1/1) ... [2022-12-05 21:46:14,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14" (1/1) ... [2022-12-05 21:46:14,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14" (1/1) ... [2022-12-05 21:46:14,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14" (1/1) ... [2022-12-05 21:46:14,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 21:46:14,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 21:46:14,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 21:46:14,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 21:46:14,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14" (1/1) ... [2022-12-05 21:46:14,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:46:14,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:46:14,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 21:46:14,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 21:46:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 21:46:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 21:46:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 21:46:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 21:46:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 21:46:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 21:46:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 21:46:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 21:46:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 21:46:14,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 21:46:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-05 21:46:14,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-05 21:46:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 21:46:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 21:46:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 21:46:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 21:46:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 21:46:14,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 21:46:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 21:46:14,172 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 21:46:14,251 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 21:46:14,252 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 21:46:14,599 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 21:46:14,785 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 21:46:14,785 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-05 21:46:14,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:46:14 BoogieIcfgContainer [2022-12-05 21:46:14,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 21:46:14,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 21:46:14,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 21:46:14,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 21:46:14,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:46:13" (1/3) ... [2022-12-05 21:46:14,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b513e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:46:14, skipping insertion in model container [2022-12-05 21:46:14,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:46:14" (2/3) ... [2022-12-05 21:46:14,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b513e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:46:14, skipping insertion in model container [2022-12-05 21:46:14,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:46:14" (3/3) ... [2022-12-05 21:46:14,794 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2022-12-05 21:46:14,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 21:46:14,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 21:46:14,807 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 21:46:14,869 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-05 21:46:14,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 245 transitions, 522 flow [2022-12-05 21:46:14,993 INFO L130 PetriNetUnfolder]: 22/241 cut-off events. [2022-12-05 21:46:14,993 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 21:46:14,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 241 events. 22/241 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 131 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 204. Up to 2 conditions per place. [2022-12-05 21:46:14,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 245 transitions, 522 flow [2022-12-05 21:46:15,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 229 transitions, 482 flow [2022-12-05 21:46:15,006 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 21:46:15,023 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 229 transitions, 482 flow [2022-12-05 21:46:15,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 229 transitions, 482 flow [2022-12-05 21:46:15,062 INFO L130 PetriNetUnfolder]: 22/229 cut-off events. [2022-12-05 21:46:15,062 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 21:46:15,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 229 events. 22/229 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 130 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 204. Up to 2 conditions per place. [2022-12-05 21:46:15,070 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 229 transitions, 482 flow [2022-12-05 21:46:15,070 INFO L188 LiptonReduction]: Number of co-enabled transitions 2000 [2022-12-05 21:46:23,757 INFO L203 LiptonReduction]: Total number of compositions: 190 [2022-12-05 21:46:23,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 21:46:23,770 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35e7076f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 21:46:23,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 21:46:23,777 INFO L130 PetriNetUnfolder]: 7/38 cut-off events. [2022-12-05 21:46:23,778 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 21:46:23,778 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:23,778 INFO L213 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] [2022-12-05 21:46:23,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:23,798 INFO L85 PathProgramCache]: Analyzing trace with hash -61734050, now seen corresponding path program 1 times [2022-12-05 21:46:23,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:23,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740350953] [2022-12-05 21:46:23,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:23,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:46:24,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:24,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740350953] [2022-12-05 21:46:24,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740350953] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:46:24,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:46:24,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 21:46:24,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891417971] [2022-12-05 21:46:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:46:24,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:46:24,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:46:24,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:46:24,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:46:24,316 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 39 [2022-12-05 21:46:24,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2022-12-05 21:46:24,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:46:24,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 39 [2022-12-05 21:46:24,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:46:24,680 INFO L130 PetriNetUnfolder]: 2607/3584 cut-off events. [2022-12-05 21:46:24,680 INFO L131 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2022-12-05 21:46:24,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7119 conditions, 3584 events. 2607/3584 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 16029 event pairs, 498 based on Foata normal form. 1/2285 useless extension candidates. Maximal degree in co-relation 5886. Up to 2275 conditions per place. [2022-12-05 21:46:24,698 INFO L137 encePairwiseOnDemand]: 35/39 looper letters, 49 selfloop transitions, 3 changer transitions 1/59 dead transitions. [2022-12-05 21:46:24,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 263 flow [2022-12-05 21:46:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:46:24,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:46:24,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2022-12-05 21:46:24,706 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2022-12-05 21:46:24,707 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 102 flow. Second operand 3 states and 72 transitions. [2022-12-05 21:46:24,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 263 flow [2022-12-05 21:46:24,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 21:46:24,714 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 105 flow [2022-12-05 21:46:24,715 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2022-12-05 21:46:24,718 INFO L294 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2022-12-05 21:46:24,718 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 105 flow [2022-12-05 21:46:24,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2022-12-05 21:46:24,718 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:24,718 INFO L213 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] [2022-12-05 21:46:24,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 21:46:24,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:24,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:24,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1318005877, now seen corresponding path program 1 times [2022-12-05 21:46:24,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:24,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612012087] [2022-12-05 21:46:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:24,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:46:24,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:24,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612012087] [2022-12-05 21:46:24,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612012087] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:46:24,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:46:24,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 21:46:24,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557943597] [2022-12-05 21:46:24,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:46:24,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:46:24,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:46:24,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:46:24,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:46:24,850 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2022-12-05 21:46:24,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-12-05 21:46:24,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:46:24,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2022-12-05 21:46:24,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:46:25,219 INFO L130 PetriNetUnfolder]: 3468/4539 cut-off events. [2022-12-05 21:46:25,220 INFO L131 PetriNetUnfolder]: For 706/706 co-relation queries the response was YES. [2022-12-05 21:46:25,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10134 conditions, 4539 events. 3468/4539 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 19805 event pairs, 816 based on Foata normal form. 92/3819 useless extension candidates. Maximal degree in co-relation 3389. Up to 3222 conditions per place. [2022-12-05 21:46:25,237 INFO L137 encePairwiseOnDemand]: 36/39 looper letters, 58 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2022-12-05 21:46:25,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 284 flow [2022-12-05 21:46:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:46:25,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:46:25,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2022-12-05 21:46:25,239 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5982905982905983 [2022-12-05 21:46:25,239 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 105 flow. Second operand 3 states and 70 transitions. [2022-12-05 21:46:25,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 284 flow [2022-12-05 21:46:25,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 21:46:25,241 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 116 flow [2022-12-05 21:46:25,241 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2022-12-05 21:46:25,242 INFO L294 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2022-12-05 21:46:25,242 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 116 flow [2022-12-05 21:46:25,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-12-05 21:46:25,242 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:25,242 INFO L213 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] [2022-12-05 21:46:25,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 21:46:25,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:25,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:25,244 INFO L85 PathProgramCache]: Analyzing trace with hash 724357031, now seen corresponding path program 1 times [2022-12-05 21:46:25,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:25,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12167997] [2022-12-05 21:46:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:25,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:46:25,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:25,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12167997] [2022-12-05 21:46:25,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12167997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:46:25,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:46:25,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 21:46:25,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114355155] [2022-12-05 21:46:25,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:46:25,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:46:25,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:46:25,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:46:25,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:46:25,344 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2022-12-05 21:46:25,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-12-05 21:46:25,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:46:25,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2022-12-05 21:46:25,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:46:25,718 INFO L130 PetriNetUnfolder]: 3833/5215 cut-off events. [2022-12-05 21:46:25,718 INFO L131 PetriNetUnfolder]: For 1879/1879 co-relation queries the response was YES. [2022-12-05 21:46:25,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12223 conditions, 5215 events. 3833/5215 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 24788 event pairs, 1073 based on Foata normal form. 128/4891 useless extension candidates. Maximal degree in co-relation 7002. Up to 3770 conditions per place. [2022-12-05 21:46:25,740 INFO L137 encePairwiseOnDemand]: 36/39 looper letters, 62 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2022-12-05 21:46:25,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 318 flow [2022-12-05 21:46:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:46:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:46:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2022-12-05 21:46:25,742 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2022-12-05 21:46:25,742 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 116 flow. Second operand 3 states and 72 transitions. [2022-12-05 21:46:25,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 318 flow [2022-12-05 21:46:25,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 21:46:25,743 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 128 flow [2022-12-05 21:46:25,744 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2022-12-05 21:46:25,744 INFO L294 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2022-12-05 21:46:25,744 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 128 flow [2022-12-05 21:46:25,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-12-05 21:46:25,744 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:25,744 INFO L213 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] [2022-12-05 21:46:25,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 21:46:25,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:25,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1558597373, now seen corresponding path program 1 times [2022-12-05 21:46:25,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:25,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724740413] [2022-12-05 21:46:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:25,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:46:25,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:25,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724740413] [2022-12-05 21:46:25,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724740413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:46:25,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:46:25,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:46:25,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853607518] [2022-12-05 21:46:25,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:46:25,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:46:25,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:46:25,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:46:25,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:46:25,861 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 39 [2022-12-05 21:46:25,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-12-05 21:46:25,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:46:25,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 39 [2022-12-05 21:46:25,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:46:26,221 INFO L130 PetriNetUnfolder]: 3191/4597 cut-off events. [2022-12-05 21:46:26,221 INFO L131 PetriNetUnfolder]: For 2509/2509 co-relation queries the response was YES. [2022-12-05 21:46:26,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11155 conditions, 4597 events. 3191/4597 cut-off events. For 2509/2509 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24315 event pairs, 2374 based on Foata normal form. 95/4553 useless extension candidates. Maximal degree in co-relation 6430. Up to 3497 conditions per place. [2022-12-05 21:46:26,238 INFO L137 encePairwiseOnDemand]: 35/39 looper letters, 65 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2022-12-05 21:46:26,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 348 flow [2022-12-05 21:46:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:46:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:46:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2022-12-05 21:46:26,239 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2022-12-05 21:46:26,239 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 128 flow. Second operand 4 states and 87 transitions. [2022-12-05 21:46:26,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 348 flow [2022-12-05 21:46:26,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 74 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 21:46:26,241 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 146 flow [2022-12-05 21:46:26,241 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2022-12-05 21:46:26,242 INFO L294 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2022-12-05 21:46:26,242 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 146 flow [2022-12-05 21:46:26,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-12-05 21:46:26,242 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:26,242 INFO L213 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] [2022-12-05 21:46:26,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 21:46:26,242 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:26,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1206920671, now seen corresponding path program 1 times [2022-12-05 21:46:26,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:26,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959815459] [2022-12-05 21:46:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:26,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:46:26,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:26,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959815459] [2022-12-05 21:46:26,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959815459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:46:26,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:46:26,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:46:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118443288] [2022-12-05 21:46:26,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:46:26,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:46:26,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:46:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:46:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:46:26,351 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 39 [2022-12-05 21:46:26,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-12-05 21:46:26,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:46:26,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 39 [2022-12-05 21:46:26,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:46:26,793 INFO L130 PetriNetUnfolder]: 3933/5791 cut-off events. [2022-12-05 21:46:26,793 INFO L131 PetriNetUnfolder]: For 3181/3181 co-relation queries the response was YES. [2022-12-05 21:46:26,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13875 conditions, 5791 events. 3933/5791 cut-off events. For 3181/3181 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 33019 event pairs, 3012 based on Foata normal form. 161/5791 useless extension candidates. Maximal degree in co-relation 11242. Up to 4410 conditions per place. [2022-12-05 21:46:26,814 INFO L137 encePairwiseOnDemand]: 35/39 looper letters, 64 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2022-12-05 21:46:26,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 364 flow [2022-12-05 21:46:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:46:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:46:26,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2022-12-05 21:46:26,815 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5448717948717948 [2022-12-05 21:46:26,815 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 146 flow. Second operand 4 states and 85 transitions. [2022-12-05 21:46:26,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 364 flow [2022-12-05 21:46:26,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 360 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-05 21:46:26,817 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 165 flow [2022-12-05 21:46:26,817 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2022-12-05 21:46:26,818 INFO L294 CegarLoopForPetriNet]: 45 programPoint places, 7 predicate places. [2022-12-05 21:46:26,818 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 165 flow [2022-12-05 21:46:26,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-12-05 21:46:26,818 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:26,818 INFO L213 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] [2022-12-05 21:46:26,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 21:46:26,819 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:26,819 INFO L85 PathProgramCache]: Analyzing trace with hash 865748885, now seen corresponding path program 1 times [2022-12-05 21:46:26,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:26,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945268158] [2022-12-05 21:46:26,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:26,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:46:27,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:27,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945268158] [2022-12-05 21:46:27,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945268158] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:46:27,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:46:27,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 21:46:27,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468813233] [2022-12-05 21:46:27,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:46:27,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 21:46:27,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:46:27,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 21:46:27,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-05 21:46:27,037 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 39 [2022-12-05 21:46:27,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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) [2022-12-05 21:46:27,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:46:27,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 39 [2022-12-05 21:46:27,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:46:28,754 INFO L130 PetriNetUnfolder]: 19079/26560 cut-off events. [2022-12-05 21:46:28,754 INFO L131 PetriNetUnfolder]: For 8363/8363 co-relation queries the response was YES. [2022-12-05 21:46:28,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60521 conditions, 26560 events. 19079/26560 cut-off events. For 8363/8363 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 148656 event pairs, 7784 based on Foata normal form. 378/26928 useless extension candidates. Maximal degree in co-relation 46518. Up to 10405 conditions per place. [2022-12-05 21:46:28,841 INFO L137 encePairwiseOnDemand]: 32/39 looper letters, 121 selfloop transitions, 7 changer transitions 0/128 dead transitions. [2022-12-05 21:46:28,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 128 transitions, 654 flow [2022-12-05 21:46:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 21:46:28,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 21:46:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2022-12-05 21:46:28,843 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.49145299145299143 [2022-12-05 21:46:28,843 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 165 flow. Second operand 6 states and 115 transitions. [2022-12-05 21:46:28,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 128 transitions, 654 flow [2022-12-05 21:46:28,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 128 transitions, 649 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-05 21:46:28,848 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 204 flow [2022-12-05 21:46:28,848 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2022-12-05 21:46:28,849 INFO L294 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2022-12-05 21:46:28,849 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 204 flow [2022-12-05 21:46:28,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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) [2022-12-05 21:46:28,849 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:28,849 INFO L213 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] [2022-12-05 21:46:28,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 21:46:28,849 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:28,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:28,850 INFO L85 PathProgramCache]: Analyzing trace with hash 564437137, now seen corresponding path program 1 times [2022-12-05 21:46:28,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:28,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140085240] [2022-12-05 21:46:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:28,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:46:29,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:29,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140085240] [2022-12-05 21:46:29,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140085240] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:46:29,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:46:29,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 21:46:29,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196800574] [2022-12-05 21:46:29,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:46:29,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 21:46:29,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:46:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 21:46:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 21:46:29,104 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 39 [2022-12-05 21:46:29,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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) [2022-12-05 21:46:29,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:46:29,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 39 [2022-12-05 21:46:29,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:46:30,372 INFO L130 PetriNetUnfolder]: 15795/22046 cut-off events. [2022-12-05 21:46:30,372 INFO L131 PetriNetUnfolder]: For 9888/9888 co-relation queries the response was YES. [2022-12-05 21:46:30,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53612 conditions, 22046 events. 15795/22046 cut-off events. For 9888/9888 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 116754 event pairs, 11708 based on Foata normal form. 160/22202 useless extension candidates. Maximal degree in co-relation 38414. Up to 18266 conditions per place. [2022-12-05 21:46:30,441 INFO L137 encePairwiseOnDemand]: 33/39 looper letters, 45 selfloop transitions, 4 changer transitions 37/86 dead transitions. [2022-12-05 21:46:30,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 86 transitions, 461 flow [2022-12-05 21:46:30,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 21:46:30,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 21:46:30,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2022-12-05 21:46:30,442 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2022-12-05 21:46:30,442 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 204 flow. Second operand 6 states and 78 transitions. [2022-12-05 21:46:30,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 86 transitions, 461 flow [2022-12-05 21:46:30,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 457 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-05 21:46:30,448 INFO L231 Difference]: Finished difference. Result has 66 places, 49 transitions, 200 flow [2022-12-05 21:46:30,448 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=66, PETRI_TRANSITIONS=49} [2022-12-05 21:46:30,449 INFO L294 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2022-12-05 21:46:30,449 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 49 transitions, 200 flow [2022-12-05 21:46:30,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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) [2022-12-05 21:46:30,449 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:30,449 INFO L213 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] [2022-12-05 21:46:30,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 21:46:30,449 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:30,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1940922075, now seen corresponding path program 1 times [2022-12-05 21:46:30,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:30,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173532115] [2022-12-05 21:46:30,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:30,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:46:30,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:30,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173532115] [2022-12-05 21:46:30,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173532115] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:46:30,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:46:30,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 21:46:30,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569192985] [2022-12-05 21:46:30,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:46:30,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 21:46:30,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:46:30,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 21:46:30,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-05 21:46:30,664 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 39 [2022-12-05 21:46:30,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 49 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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) [2022-12-05 21:46:30,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:46:30,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 39 [2022-12-05 21:46:30,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:46:32,095 INFO L130 PetriNetUnfolder]: 13331/18270 cut-off events. [2022-12-05 21:46:32,096 INFO L131 PetriNetUnfolder]: For 10308/10308 co-relation queries the response was YES. [2022-12-05 21:46:32,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46119 conditions, 18270 events. 13331/18270 cut-off events. For 10308/10308 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 90632 event pairs, 3562 based on Foata normal form. 1056/19322 useless extension candidates. Maximal degree in co-relation 34812. Up to 8808 conditions per place. [2022-12-05 21:46:32,159 INFO L137 encePairwiseOnDemand]: 31/39 looper letters, 100 selfloop transitions, 9 changer transitions 11/120 dead transitions. [2022-12-05 21:46:32,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 681 flow [2022-12-05 21:46:32,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:46:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:46:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2022-12-05 21:46:32,160 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2022-12-05 21:46:32,160 INFO L175 Difference]: Start difference. First operand has 66 places, 49 transitions, 200 flow. Second operand 7 states and 105 transitions. [2022-12-05 21:46:32,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 681 flow [2022-12-05 21:46:32,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 120 transitions, 649 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-12-05 21:46:32,164 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 243 flow [2022-12-05 21:46:32,164 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2022-12-05 21:46:32,165 INFO L294 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2022-12-05 21:46:32,165 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 243 flow [2022-12-05 21:46:32,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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) [2022-12-05 21:46:32,165 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:32,165 INFO L213 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] [2022-12-05 21:46:32,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 21:46:32,165 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:32,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:32,166 INFO L85 PathProgramCache]: Analyzing trace with hash 509756819, now seen corresponding path program 1 times [2022-12-05 21:46:32,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:32,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623734593] [2022-12-05 21:46:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:32,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:46:32,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:32,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623734593] [2022-12-05 21:46:32,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623734593] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:46:32,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771778929] [2022-12-05 21:46:32,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:32,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:46:32,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:46:32,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:46:32,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 21:46:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:32,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-05 21:46:32,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:46:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:46:32,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:46:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:46:32,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771778929] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 21:46:32,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 21:46:32,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5] total 11 [2022-12-05 21:46:32,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327243053] [2022-12-05 21:46:32,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:46:32,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:46:32,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:46:32,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:46:32,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-05 21:46:32,641 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 39 [2022-12-05 21:46:32,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 243 flow. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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) [2022-12-05 21:46:32,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:46:32,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 39 [2022-12-05 21:46:32,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:46:33,736 INFO L130 PetriNetUnfolder]: 10547/14213 cut-off events. [2022-12-05 21:46:33,737 INFO L131 PetriNetUnfolder]: For 10989/10989 co-relation queries the response was YES. [2022-12-05 21:46:33,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39907 conditions, 14213 events. 10547/14213 cut-off events. For 10989/10989 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 66075 event pairs, 1816 based on Foata normal form. 620/14831 useless extension candidates. Maximal degree in co-relation 34156. Up to 5198 conditions per place. [2022-12-05 21:46:33,792 INFO L137 encePairwiseOnDemand]: 29/39 looper letters, 185 selfloop transitions, 27 changer transitions 1/213 dead transitions. [2022-12-05 21:46:33,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 213 transitions, 1308 flow [2022-12-05 21:46:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 21:46:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 21:46:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2022-12-05 21:46:33,793 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.37995337995337997 [2022-12-05 21:46:33,793 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 243 flow. Second operand 11 states and 163 transitions. [2022-12-05 21:46:33,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 213 transitions, 1308 flow [2022-12-05 21:46:33,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 213 transitions, 1279 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-12-05 21:46:33,822 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 413 flow [2022-12-05 21:46:33,823 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=413, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2022-12-05 21:46:33,823 INFO L294 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2022-12-05 21:46:33,823 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 413 flow [2022-12-05 21:46:33,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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) [2022-12-05 21:46:33,823 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:33,823 INFO L213 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] [2022-12-05 21:46:33,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 21:46:34,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:46:34,030 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:34,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1271904739, now seen corresponding path program 1 times [2022-12-05 21:46:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:34,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155873701] [2022-12-05 21:46:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-05 21:46:34,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:34,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155873701] [2022-12-05 21:46:34,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155873701] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:46:34,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:46:34,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 21:46:34,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885569817] [2022-12-05 21:46:34,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:46:34,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 21:46:34,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:46:34,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 21:46:34,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-05 21:46:34,271 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 39 [2022-12-05 21:46:34,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 413 flow. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-12-05 21:46:34,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:46:34,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 39 [2022-12-05 21:46:34,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:46:35,464 INFO L130 PetriNetUnfolder]: 10874/14503 cut-off events. [2022-12-05 21:46:35,464 INFO L131 PetriNetUnfolder]: For 30431/30431 co-relation queries the response was YES. [2022-12-05 21:46:35,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49569 conditions, 14503 events. 10874/14503 cut-off events. For 30431/30431 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 66421 event pairs, 3164 based on Foata normal form. 696/15198 useless extension candidates. Maximal degree in co-relation 49533. Up to 9275 conditions per place. [2022-12-05 21:46:35,539 INFO L137 encePairwiseOnDemand]: 31/39 looper letters, 169 selfloop transitions, 11 changer transitions 0/180 dead transitions. [2022-12-05 21:46:35,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 180 transitions, 1436 flow [2022-12-05 21:46:35,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:46:35,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:46:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2022-12-05 21:46:35,540 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.34798534798534797 [2022-12-05 21:46:35,540 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 413 flow. Second operand 7 states and 95 transitions. [2022-12-05 21:46:35,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 180 transitions, 1436 flow [2022-12-05 21:46:35,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 180 transitions, 1428 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 21:46:35,580 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 501 flow [2022-12-05 21:46:35,580 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=501, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2022-12-05 21:46:35,580 INFO L294 CegarLoopForPetriNet]: 45 programPoint places, 34 predicate places. [2022-12-05 21:46:35,580 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 501 flow [2022-12-05 21:46:35,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-12-05 21:46:35,580 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:35,581 INFO L213 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] [2022-12-05 21:46:35,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 21:46:35,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:35,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:35,581 INFO L85 PathProgramCache]: Analyzing trace with hash 229897169, now seen corresponding path program 1 times [2022-12-05 21:46:35,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:35,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222373081] [2022-12-05 21:46:35,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:35,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-05 21:46:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:35,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222373081] [2022-12-05 21:46:35,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222373081] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:46:35,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516891707] [2022-12-05 21:46:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:35,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:46:35,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:46:35,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:46:35,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 21:46:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:35,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-05 21:46:35,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:46:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-05 21:46:35,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 21:46:35,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516891707] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:46:35,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 21:46:35,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2022-12-05 21:46:35,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101498377] [2022-12-05 21:46:35,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:46:35,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:46:35,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:46:35,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:46:35,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:46:35,896 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2022-12-05 21:46:35,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 501 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2022-12-05 21:46:35,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:46:35,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2022-12-05 21:46:35,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:46:37,531 INFO L130 PetriNetUnfolder]: 13523/17677 cut-off events. [2022-12-05 21:46:37,531 INFO L131 PetriNetUnfolder]: For 56270/57521 co-relation queries the response was YES. [2022-12-05 21:46:37,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69592 conditions, 17677 events. 13523/17677 cut-off events. For 56270/57521 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 88359 event pairs, 1790 based on Foata normal form. 981/18587 useless extension candidates. Maximal degree in co-relation 69553. Up to 6055 conditions per place. [2022-12-05 21:46:37,642 INFO L137 encePairwiseOnDemand]: 33/39 looper letters, 144 selfloop transitions, 26 changer transitions 0/177 dead transitions. [2022-12-05 21:46:37,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 177 transitions, 1405 flow [2022-12-05 21:46:37,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 21:46:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 21:46:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2022-12-05 21:46:37,643 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2022-12-05 21:46:37,643 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 501 flow. Second operand 6 states and 118 transitions. [2022-12-05 21:46:37,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 177 transitions, 1405 flow [2022-12-05 21:46:37,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 177 transitions, 1389 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 21:46:37,684 INFO L231 Difference]: Finished difference. Result has 85 places, 97 transitions, 745 flow [2022-12-05 21:46:37,684 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=745, PETRI_PLACES=85, PETRI_TRANSITIONS=97} [2022-12-05 21:46:37,684 INFO L294 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2022-12-05 21:46:37,684 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 97 transitions, 745 flow [2022-12-05 21:46:37,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2022-12-05 21:46:37,685 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:37,685 INFO L213 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] [2022-12-05 21:46:37,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 21:46:37,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-05 21:46:37,892 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1182068195, now seen corresponding path program 2 times [2022-12-05 21:46:37,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:37,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767707706] [2022-12-05 21:46:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:37,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-05 21:46:38,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:38,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767707706] [2022-12-05 21:46:38,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767707706] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:46:38,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:46:38,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 21:46:38,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782756501] [2022-12-05 21:46:38,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:46:38,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 21:46:38,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:46:38,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 21:46:38,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-05 21:46:38,060 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 39 [2022-12-05 21:46:38,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 97 transitions, 745 flow. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-12-05 21:46:38,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:46:38,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 39 [2022-12-05 21:46:38,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:46:42,787 INFO L130 PetriNetUnfolder]: 37345/49206 cut-off events. [2022-12-05 21:46:42,787 INFO L131 PetriNetUnfolder]: For 197060/197060 co-relation queries the response was YES. [2022-12-05 21:46:42,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204405 conditions, 49206 events. 37345/49206 cut-off events. For 197060/197060 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 259193 event pairs, 6457 based on Foata normal form. 822/50027 useless extension candidates. Maximal degree in co-relation 204362. Up to 16869 conditions per place. [2022-12-05 21:46:43,159 INFO L137 encePairwiseOnDemand]: 33/39 looper letters, 263 selfloop transitions, 20 changer transitions 0/283 dead transitions. [2022-12-05 21:46:43,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 283 transitions, 2855 flow [2022-12-05 21:46:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 21:46:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 21:46:43,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2022-12-05 21:46:43,161 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4658119658119658 [2022-12-05 21:46:43,161 INFO L175 Difference]: Start difference. First operand has 85 places, 97 transitions, 745 flow. Second operand 6 states and 109 transitions. [2022-12-05 21:46:43,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 283 transitions, 2855 flow [2022-12-05 21:46:43,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 283 transitions, 2822 flow, removed 16 selfloop flow, removed 1 redundant places. [2022-12-05 21:46:43,409 INFO L231 Difference]: Finished difference. Result has 93 places, 111 transitions, 931 flow [2022-12-05 21:46:43,410 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=931, PETRI_PLACES=93, PETRI_TRANSITIONS=111} [2022-12-05 21:46:43,411 INFO L294 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2022-12-05 21:46:43,411 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 111 transitions, 931 flow [2022-12-05 21:46:43,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-12-05 21:46:43,411 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:46:43,412 INFO L213 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] [2022-12-05 21:46:43,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 21:46:43,412 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:46:43,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:46:43,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1556945698, now seen corresponding path program 1 times [2022-12-05 21:46:43,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:46:43,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146731402] [2022-12-05 21:46:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:43,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:46:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:46:45,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:46:45,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146731402] [2022-12-05 21:46:45,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146731402] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:46:45,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416789912] [2022-12-05 21:46:45,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:46:45,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:46:45,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:46:45,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:46:45,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 21:46:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:46:45,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 78 conjunts are in the unsatisfiable core [2022-12-05 21:46:45,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:46:46,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 21:46:46,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 21:46:46,278 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-05 21:46:46,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2022-12-05 21:46:46,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-05 21:46:46,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-05 21:46:46,699 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-12-05 21:46:46,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2022-12-05 21:46:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:46:46,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:46:47,633 INFO L321 Elim1Store]: treesize reduction 30, result has 93.7 percent of original size [2022-12-05 21:46:47,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 452 treesize of output 752 [2022-12-05 21:46:47,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:46:47,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 301 treesize of output 346 [2022-12-05 21:46:47,754 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:46:47,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 253 treesize of output 298 Received shutdown request... [2022-12-05 22:00:33,511 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-05 22:00:33,518 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 22:00:33,519 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 22:00:33,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 22:00:33,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:00:33,718 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-42-4-4-7-5-6-5-7-6-6-7-7-6-6-3-5-3-5-3-4-2-2-1 context. [2022-12-05 22:00:33,719 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-05 22:00:33,720 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-05 22:00:33,720 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-05 22:00:33,720 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-05 22:00:33,722 INFO L458 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:00:33,725 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 22:00:33,725 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 22:00:33,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 10:00:33 BasicIcfg [2022-12-05 22:00:33,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 22:00:33,729 INFO L158 Benchmark]: Toolchain (without parser) took 859973.07ms. Allocated memory was 197.1MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 173.5MB in the beginning and 1.0GB in the end (delta: -873.8MB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. [2022-12-05 22:00:33,729 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 197.1MB. Free memory is still 173.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 22:00:33,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.55ms. Allocated memory is still 197.1MB. Free memory was 173.5MB in the beginning and 157.3MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-05 22:00:33,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.33ms. Allocated memory is still 197.1MB. Free memory was 157.3MB in the beginning and 154.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-05 22:00:33,730 INFO L158 Benchmark]: Boogie Preprocessor took 52.49ms. Allocated memory is still 197.1MB. Free memory was 154.7MB in the beginning and 152.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 22:00:33,730 INFO L158 Benchmark]: RCFGBuilder took 677.59ms. Allocated memory was 197.1MB in the beginning and 239.1MB in the end (delta: 41.9MB). Free memory was 152.1MB in the beginning and 209.0MB in the end (delta: -57.0MB). Peak memory consumption was 52.1MB. Max. memory is 8.0GB. [2022-12-05 22:00:33,730 INFO L158 Benchmark]: TraceAbstraction took 858938.56ms. Allocated memory was 239.1MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 208.5MB in the beginning and 1.0GB in the end (delta: -838.9MB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. [2022-12-05 22:00:33,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 197.1MB. Free memory is still 173.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 262.55ms. Allocated memory is still 197.1MB. Free memory was 173.5MB in the beginning and 157.3MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.33ms. Allocated memory is still 197.1MB. Free memory was 157.3MB in the beginning and 154.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.49ms. Allocated memory is still 197.1MB. Free memory was 154.7MB in the beginning and 152.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 677.59ms. Allocated memory was 197.1MB in the beginning and 239.1MB in the end (delta: 41.9MB). Free memory was 152.1MB in the beginning and 209.0MB in the end (delta: -57.0MB). Peak memory consumption was 52.1MB. Max. memory is 8.0GB. * TraceAbstraction took 858938.56ms. Allocated memory was 239.1MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 208.5MB in the beginning and 1.0GB in the end (delta: -838.9MB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.7s, 220 PlacesBefore, 45 PlacesAfterwards, 229 TransitionsBefore, 39 TransitionsAfterwards, 2000 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 144 TrivialYvCompositions, 31 ConcurrentYvCompositions, 15 ChoiceCompositions, 190 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1132, independent: 1106, independent conditional: 1106, independent unconditional: 0, dependent: 26, dependent conditional: 26, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1132, independent: 1106, independent conditional: 0, independent unconditional: 1106, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1132, independent: 1106, independent conditional: 0, independent unconditional: 1106, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1132, independent: 1106, independent conditional: 0, independent unconditional: 1106, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1041, independent: 1026, independent conditional: 0, independent unconditional: 1026, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1041, independent: 1024, independent conditional: 0, independent unconditional: 1024, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 36, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1132, independent: 80, independent conditional: 0, independent unconditional: 80, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 1041, unknown conditional: 0, unknown unconditional: 1041] , Statistics on independence cache: Total cache size (in pairs): 1623, Positive cache size: 1608, Positive conditional cache size: 0, Positive unconditional cache size: 1608, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-42-4-4-7-5-6-5-7-6-6-7-7-6-6-3-5-3-5-3-4-2-2-1 context. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-42-4-4-7-5-6-5-7-6-6-7-7-6-6-3-5-3-5-3-4-2-2-1 context. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-42-4-4-7-5-6-5-7-6-6-7-7-6-6-3-5-3-5-3-4-2-2-1 context. - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-42-4-4-7-5-6-5-7-6-6-7-7-6-6-3-5-3-5-3-4-2-2-1 context. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-42-4-4-7-5-6-5-7-6-6-7-7-6-6-3-5-3-5-3-4-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 258 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 858.8s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 857 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 857 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1774 IncrementalHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 15 mSDtfsCounter, 1774 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=931occurred in iteration=12, InterpolantAutomatonStates: 66, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 468 NumberOfCodeBlocks, 468 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 487 ConstructedInterpolants, 0 QuantifiedInterpolants, 1569 SizeOfPredicates, 11 NumberOfNonLiveVariables, 811 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 49/52 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 could not prove your program: Timeout Completed graceful shutdown