/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 --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 21:44:07,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 21:44:07,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 21:44:07,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 21:44:07,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 21:44:07,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 21:44:07,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 21:44:07,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 21:44:07,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 21:44:07,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 21:44:07,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 21:44:07,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 21:44:07,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 21:44:07,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 21:44:07,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 21:44:07,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 21:44:07,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 21:44:07,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 21:44:07,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 21:44:07,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 21:44:07,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 21:44:07,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 21:44:07,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 21:44:07,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 21:44:07,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 21:44:07,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 21:44:07,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 21:44:07,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 21:44:07,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 21:44:07,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 21:44:07,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 21:44:07,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 21:44:07,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 21:44:07,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 21:44:07,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 21:44:07,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 21:44:07,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 21:44:07,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 21:44:07,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 21:44:07,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 21:44:07,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 21:44:08,000 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 [2022-12-12 21:44:08,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 21:44:08,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 21:44:08,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 21:44:08,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 21:44:08,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 21:44:08,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 21:44:08,027 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 21:44:08,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 21:44:08,027 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 21:44:08,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 21:44:08,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 21:44:08,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 21:44:08,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 21:44:08,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 21:44:08,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 21:44:08,028 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 21:44:08,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 21:44:08,028 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 21:44:08,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 21:44:08,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 21:44:08,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 21:44:08,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 21:44:08,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 21:44:08,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:44:08,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 21:44:08,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 21:44:08,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 21:44:08,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 21:44:08,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 21:44:08,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 21:44:08,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 21:44:08,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 21:44:08,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 21:44:08,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 21:44:08,303 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 21:44:08,303 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 21:44:08,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2022-12-12 21:44:09,369 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 21:44:09,645 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 21:44:09,645 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2022-12-12 21:44:09,661 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fbd9f971/9e7c6c8341064d0b974ccd808c1b8f83/FLAG2fa1bb58a [2022-12-12 21:44:09,674 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fbd9f971/9e7c6c8341064d0b974ccd808c1b8f83 [2022-12-12 21:44:09,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 21:44:09,677 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 21:44:09,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 21:44:09,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 21:44:09,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 21:44:09,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:44:09" (1/1) ... [2022-12-12 21:44:09,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e0e60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:09, skipping insertion in model container [2022-12-12 21:44:09,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:44:09" (1/1) ... [2022-12-12 21:44:09,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 21:44:09,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 21:44:09,826 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i[947,960] [2022-12-12 21:44:09,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:09,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:09,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:09,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:09,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:09,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:09,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:09,989 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:09,989 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:09,990 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:09,990 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:09,991 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:09,991 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:09,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:09,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:09,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:09,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:44:10,066 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 21:44:10,075 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i[947,960] [2022-12-12 21:44:10,094 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,094 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,094 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,095 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,095 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:10,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:10,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:44:10,161 INFO L208 MainTranslator]: Completed translation [2022-12-12 21:44:10,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10 WrapperNode [2022-12-12 21:44:10,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 21:44:10,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 21:44:10,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 21:44:10,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 21:44:10,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10" (1/1) ... [2022-12-12 21:44:10,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10" (1/1) ... [2022-12-12 21:44:10,215 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2022-12-12 21:44:10,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 21:44:10,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 21:44:10,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 21:44:10,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 21:44:10,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10" (1/1) ... [2022-12-12 21:44:10,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10" (1/1) ... [2022-12-12 21:44:10,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10" (1/1) ... [2022-12-12 21:44:10,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10" (1/1) ... [2022-12-12 21:44:10,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10" (1/1) ... [2022-12-12 21:44:10,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10" (1/1) ... [2022-12-12 21:44:10,238 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10" (1/1) ... [2022-12-12 21:44:10,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10" (1/1) ... [2022-12-12 21:44:10,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 21:44:10,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 21:44:10,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 21:44:10,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 21:44:10,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10" (1/1) ... [2022-12-12 21:44:10,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:44:10,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 21:44:10,284 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) [2022-12-12 21:44:10,290 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 [2022-12-12 21:44:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 21:44:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 21:44:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 21:44:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 21:44:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 21:44:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 21:44:10,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 21:44:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 21:44:10,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 21:44:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 21:44:10,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 21:44:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 21:44:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 21:44:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 21:44:10,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 21:44:10,349 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 21:44:10,452 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 21:44:10,453 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 21:44:10,730 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 21:44:10,861 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 21:44:10,862 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 21:44:10,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:44:10 BoogieIcfgContainer [2022-12-12 21:44:10,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 21:44:10,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 21:44:10,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 21:44:10,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 21:44:10,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 09:44:09" (1/3) ... [2022-12-12 21:44:10,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bb30c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:44:10, skipping insertion in model container [2022-12-12 21:44:10,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:10" (2/3) ... [2022-12-12 21:44:10,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bb30c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:44:10, skipping insertion in model container [2022-12-12 21:44:10,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:44:10" (3/3) ... [2022-12-12 21:44:10,871 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2022-12-12 21:44:10,886 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 21:44:10,886 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-12 21:44:10,886 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 21:44:10,946 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 21:44:10,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 239 flow [2022-12-12 21:44:11,055 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2022-12-12 21:44:11,055 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:44:11,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-12-12 21:44:11,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 239 flow [2022-12-12 21:44:11,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 109 transitions, 227 flow [2022-12-12 21:44:11,068 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 21:44:11,090 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 109 transitions, 227 flow [2022-12-12 21:44:11,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 109 transitions, 227 flow [2022-12-12 21:44:11,112 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2022-12-12 21:44:11,112 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:44:11,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-12-12 21:44:11,119 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 109 transitions, 227 flow [2022-12-12 21:44:11,120 INFO L226 LiptonReduction]: Number of co-enabled transitions 2202 [2022-12-12 21:44:19,419 INFO L241 LiptonReduction]: Total number of compositions: 87 [2022-12-12 21:44:19,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 21:44:19,445 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;@4a9f1ce2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 21:44:19,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-12 21:44:19,457 INFO L130 PetriNetUnfolder]: 1/28 cut-off events. [2022-12-12 21:44:19,457 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:44:19,462 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:19,463 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:19,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:19,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:19,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1136970117, now seen corresponding path program 1 times [2022-12-12 21:44:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:19,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937108650] [2022-12-12 21:44:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:19,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:19,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:19,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:19,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937108650] [2022-12-12 21:44:19,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937108650] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:19,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:19,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:44:19,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134080633] [2022-12-12 21:44:19,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:19,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:44:19,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:19,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:44:19,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:44:19,788 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2022-12-12 21:44:19,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-12-12 21:44:19,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:19,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2022-12-12 21:44:19,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:23,026 INFO L130 PetriNetUnfolder]: 19333/28265 cut-off events. [2022-12-12 21:44:23,026 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-12-12 21:44:23,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55442 conditions, 28265 events. 19333/28265 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 1229. Compared 186508 event pairs, 1957 based on Foata normal form. 0/18310 useless extension candidates. Maximal degree in co-relation 55431. Up to 23929 conditions per place. [2022-12-12 21:44:23,097 INFO L137 encePairwiseOnDemand]: 54/59 looper letters, 38 selfloop transitions, 2 changer transitions 44/92 dead transitions. [2022-12-12 21:44:23,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 92 transitions, 361 flow [2022-12-12 21:44:23,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:44:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:44:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2022-12-12 21:44:23,106 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6384180790960452 [2022-12-12 21:44:23,108 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2022-12-12 21:44:23,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 92 transitions, 361 flow [2022-12-12 21:44:23,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 48 transitions, 185 flow [2022-12-12 21:44:23,141 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 185 flow [2022-12-12 21:44:23,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-12-12 21:44:23,142 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:23,142 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:23,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 21:44:23,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:23,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:23,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1706581473, now seen corresponding path program 1 times [2022-12-12 21:44:23,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:23,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563795855] [2022-12-12 21:44:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:23,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:23,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:23,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563795855] [2022-12-12 21:44:23,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563795855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:23,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:23,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:44:23,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011156272] [2022-12-12 21:44:23,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:23,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:44:23,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:23,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:44:23,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:44:23,375 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2022-12-12 21:44:23,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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) [2022-12-12 21:44:23,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:23,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2022-12-12 21:44:23,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:23,839 INFO L130 PetriNetUnfolder]: 2516/3846 cut-off events. [2022-12-12 21:44:23,839 INFO L131 PetriNetUnfolder]: For 44/50 co-relation queries the response was YES. [2022-12-12 21:44:23,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11276 conditions, 3846 events. 2516/3846 cut-off events. For 44/50 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 19481 event pairs, 450 based on Foata normal form. 126/3449 useless extension candidates. Maximal degree in co-relation 11262. Up to 3117 conditions per place. [2022-12-12 21:44:23,862 INFO L137 encePairwiseOnDemand]: 56/59 looper letters, 50 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2022-12-12 21:44:23,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 337 flow [2022-12-12 21:44:23,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:44:23,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:44:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2022-12-12 21:44:23,863 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3615819209039548 [2022-12-12 21:44:23,864 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, -20 predicate places. [2022-12-12 21:44:23,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 60 transitions, 337 flow [2022-12-12 21:44:23,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 60 transitions, 337 flow [2022-12-12 21:44:23,882 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 60 transitions, 337 flow [2022-12-12 21:44:23,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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) [2022-12-12 21:44:23,882 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:23,882 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:23,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 21:44:23,882 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:23,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1240970910, now seen corresponding path program 1 times [2022-12-12 21:44:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:23,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241795308] [2022-12-12 21:44:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:23,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:24,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:24,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241795308] [2022-12-12 21:44:24,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241795308] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:24,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:24,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:44:24,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673382129] [2022-12-12 21:44:24,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:24,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 21:44:24,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:24,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 21:44:24,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 21:44:24,715 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2022-12-12 21:44:24,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 60 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-12-12 21:44:24,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:24,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2022-12-12 21:44:24,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:25,285 INFO L130 PetriNetUnfolder]: 3359/5102 cut-off events. [2022-12-12 21:44:25,285 INFO L131 PetriNetUnfolder]: For 111/111 co-relation queries the response was YES. [2022-12-12 21:44:25,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19811 conditions, 5102 events. 3359/5102 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 26866 event pairs, 228 based on Foata normal form. 42/4506 useless extension candidates. Maximal degree in co-relation 19794. Up to 4322 conditions per place. [2022-12-12 21:44:25,313 INFO L137 encePairwiseOnDemand]: 47/59 looper letters, 78 selfloop transitions, 26 changer transitions 0/112 dead transitions. [2022-12-12 21:44:25,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 112 transitions, 863 flow [2022-12-12 21:44:25,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:44:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:44:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2022-12-12 21:44:25,314 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3587570621468927 [2022-12-12 21:44:25,315 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, -15 predicate places. [2022-12-12 21:44:25,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 112 transitions, 863 flow [2022-12-12 21:44:25,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 112 transitions, 863 flow [2022-12-12 21:44:25,336 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 112 transitions, 863 flow [2022-12-12 21:44:25,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-12-12 21:44:25,336 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:25,336 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:25,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 21:44:25,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1221752460, now seen corresponding path program 2 times [2022-12-12 21:44:25,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:25,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146569232] [2022-12-12 21:44:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:25,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:25,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:25,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146569232] [2022-12-12 21:44:25,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146569232] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:25,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:25,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 21:44:25,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023794721] [2022-12-12 21:44:25,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:25,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 21:44:25,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 21:44:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-12 21:44:25,898 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2022-12-12 21:44:25,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 112 transitions, 863 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2022-12-12 21:44:25,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:25,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2022-12-12 21:44:25,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:26,453 INFO L130 PetriNetUnfolder]: 3591/5466 cut-off events. [2022-12-12 21:44:26,453 INFO L131 PetriNetUnfolder]: For 178/178 co-relation queries the response was YES. [2022-12-12 21:44:26,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26452 conditions, 5466 events. 3591/5466 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 29395 event pairs, 240 based on Foata normal form. 42/4838 useless extension candidates. Maximal degree in co-relation 26432. Up to 4674 conditions per place. [2022-12-12 21:44:26,484 INFO L137 encePairwiseOnDemand]: 46/59 looper letters, 108 selfloop transitions, 38 changer transitions 0/154 dead transitions. [2022-12-12 21:44:26,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 154 transitions, 1491 flow [2022-12-12 21:44:26,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:44:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:44:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2022-12-12 21:44:26,485 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3672316384180791 [2022-12-12 21:44:26,486 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2022-12-12 21:44:26,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 154 transitions, 1491 flow [2022-12-12 21:44:26,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 154 transitions, 1491 flow [2022-12-12 21:44:26,511 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 154 transitions, 1491 flow [2022-12-12 21:44:26,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2022-12-12 21:44:26,511 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:26,511 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:26,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 21:44:26,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:26,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1219521390, now seen corresponding path program 3 times [2022-12-12 21:44:26,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:26,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506944302] [2022-12-12 21:44:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:26,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:26,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:26,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506944302] [2022-12-12 21:44:26,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506944302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:26,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:26,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 21:44:26,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703535928] [2022-12-12 21:44:26,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:26,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 21:44:26,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:26,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 21:44:26,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-12 21:44:26,937 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2022-12-12 21:44:26,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 154 transitions, 1491 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2022-12-12 21:44:26,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:26,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2022-12-12 21:44:26,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:27,543 INFO L130 PetriNetUnfolder]: 3782/5791 cut-off events. [2022-12-12 21:44:27,544 INFO L131 PetriNetUnfolder]: For 326/326 co-relation queries the response was YES. [2022-12-12 21:44:27,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33533 conditions, 5791 events. 3782/5791 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 31799 event pairs, 244 based on Foata normal form. 42/5124 useless extension candidates. Maximal degree in co-relation 33510. Up to 4981 conditions per place. [2022-12-12 21:44:27,576 INFO L137 encePairwiseOnDemand]: 47/59 looper letters, 129 selfloop transitions, 53 changer transitions 0/190 dead transitions. [2022-12-12 21:44:27,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 190 transitions, 2215 flow [2022-12-12 21:44:27,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:44:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:44:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2022-12-12 21:44:27,578 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3220338983050847 [2022-12-12 21:44:27,578 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2022-12-12 21:44:27,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 190 transitions, 2215 flow [2022-12-12 21:44:27,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 190 transitions, 2215 flow [2022-12-12 21:44:27,603 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 190 transitions, 2215 flow [2022-12-12 21:44:27,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2022-12-12 21:44:27,603 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:27,603 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:27,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 21:44:27,603 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:27,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:27,604 INFO L85 PathProgramCache]: Analyzing trace with hash 780793346, now seen corresponding path program 1 times [2022-12-12 21:44:27,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:27,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998569679] [2022-12-12 21:44:27,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:27,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:28,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:28,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998569679] [2022-12-12 21:44:28,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998569679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:28,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:28,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 21:44:28,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812766474] [2022-12-12 21:44:28,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:28,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 21:44:28,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:28,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 21:44:28,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-12 21:44:28,033 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2022-12-12 21:44:28,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 190 transitions, 2215 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2022-12-12 21:44:28,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:28,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2022-12-12 21:44:28,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:29,480 INFO L130 PetriNetUnfolder]: 6780/10586 cut-off events. [2022-12-12 21:44:29,481 INFO L131 PetriNetUnfolder]: For 1895/1895 co-relation queries the response was YES. [2022-12-12 21:44:29,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70440 conditions, 10586 events. 6780/10586 cut-off events. For 1895/1895 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 66951 event pairs, 481 based on Foata normal form. 145/9238 useless extension candidates. Maximal degree in co-relation 70414. Up to 9345 conditions per place. [2022-12-12 21:44:29,546 INFO L137 encePairwiseOnDemand]: 47/59 looper letters, 213 selfloop transitions, 40 changer transitions 26/287 dead transitions. [2022-12-12 21:44:29,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 287 transitions, 3943 flow [2022-12-12 21:44:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 21:44:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 21:44:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2022-12-12 21:44:29,548 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3644067796610169 [2022-12-12 21:44:29,548 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2022-12-12 21:44:29,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 287 transitions, 3943 flow [2022-12-12 21:44:29,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 261 transitions, 3579 flow [2022-12-12 21:44:29,603 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 261 transitions, 3579 flow [2022-12-12 21:44:29,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2022-12-12 21:44:29,603 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:29,603 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:29,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 21:44:29,603 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:29,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:29,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1580245671, now seen corresponding path program 1 times [2022-12-12 21:44:29,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:29,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318563616] [2022-12-12 21:44:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:29,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:29,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:29,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318563616] [2022-12-12 21:44:29,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318563616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:29,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:29,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:44:29,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181707275] [2022-12-12 21:44:29,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:29,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:44:29,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:29,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:44:29,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:44:29,737 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 59 [2022-12-12 21:44:29,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 261 transitions, 3579 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2022-12-12 21:44:29,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:29,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 59 [2022-12-12 21:44:29,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:31,241 INFO L130 PetriNetUnfolder]: 8309/12839 cut-off events. [2022-12-12 21:44:31,241 INFO L131 PetriNetUnfolder]: For 29697/29697 co-relation queries the response was YES. [2022-12-12 21:44:31,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93192 conditions, 12839 events. 8309/12839 cut-off events. For 29697/29697 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 82903 event pairs, 871 based on Foata normal form. 984/12252 useless extension candidates. Maximal degree in co-relation 93163. Up to 10543 conditions per place. [2022-12-12 21:44:31,317 INFO L137 encePairwiseOnDemand]: 47/59 looper letters, 329 selfloop transitions, 52 changer transitions 282/668 dead transitions. [2022-12-12 21:44:31,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 668 transitions, 10504 flow [2022-12-12 21:44:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:44:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:44:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2022-12-12 21:44:31,318 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4101694915254237 [2022-12-12 21:44:31,319 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2022-12-12 21:44:31,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 668 transitions, 10504 flow [2022-12-12 21:44:31,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 386 transitions, 6064 flow [2022-12-12 21:44:31,380 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 386 transitions, 6064 flow [2022-12-12 21:44:31,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2022-12-12 21:44:31,380 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:31,380 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:31,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 21:44:31,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:31,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:31,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1854707310, now seen corresponding path program 1 times [2022-12-12 21:44:31,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:31,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173751281] [2022-12-12 21:44:31,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:31,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:31,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:31,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173751281] [2022-12-12 21:44:31,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173751281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:31,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:31,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:44:31,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062139762] [2022-12-12 21:44:31,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:31,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:44:31,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:31,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:44:31,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:44:31,532 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 59 [2022-12-12 21:44:31,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 386 transitions, 6064 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2022-12-12 21:44:31,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:31,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 59 [2022-12-12 21:44:31,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:32,497 INFO L130 PetriNetUnfolder]: 4194/7134 cut-off events. [2022-12-12 21:44:32,497 INFO L131 PetriNetUnfolder]: For 17196/17196 co-relation queries the response was YES. [2022-12-12 21:44:32,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59104 conditions, 7134 events. 4194/7134 cut-off events. For 17196/17196 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 48087 event pairs, 149 based on Foata normal form. 762/7059 useless extension candidates. Maximal degree in co-relation 59072. Up to 6457 conditions per place. [2022-12-12 21:44:32,536 INFO L137 encePairwiseOnDemand]: 47/59 looper letters, 273 selfloop transitions, 95 changer transitions 173/546 dead transitions. [2022-12-12 21:44:32,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 546 transitions, 9601 flow [2022-12-12 21:44:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:44:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:44:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2022-12-12 21:44:32,538 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4180790960451977 [2022-12-12 21:44:32,538 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2022-12-12 21:44:32,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 546 transitions, 9601 flow [2022-12-12 21:44:32,570 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 373 transitions, 6559 flow [2022-12-12 21:44:32,570 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 373 transitions, 6559 flow [2022-12-12 21:44:32,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2022-12-12 21:44:32,571 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:32,571 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:32,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 21:44:32,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:32,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:32,571 INFO L85 PathProgramCache]: Analyzing trace with hash 417678812, now seen corresponding path program 1 times [2022-12-12 21:44:32,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:32,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809043254] [2022-12-12 21:44:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:32,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:33,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:33,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809043254] [2022-12-12 21:44:33,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809043254] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:33,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:33,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 21:44:33,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396375140] [2022-12-12 21:44:33,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:33,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 21:44:33,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:33,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 21:44:33,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-12 21:44:33,584 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2022-12-12 21:44:33,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 373 transitions, 6559 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2022-12-12 21:44:33,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:33,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2022-12-12 21:44:33,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:34,639 INFO L130 PetriNetUnfolder]: 3900/6794 cut-off events. [2022-12-12 21:44:34,640 INFO L131 PetriNetUnfolder]: For 20568/20568 co-relation queries the response was YES. [2022-12-12 21:44:34,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61930 conditions, 6794 events. 3900/6794 cut-off events. For 20568/20568 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 46591 event pairs, 194 based on Foata normal form. 126/6086 useless extension candidates. Maximal degree in co-relation 61895. Up to 5947 conditions per place. [2022-12-12 21:44:34,685 INFO L137 encePairwiseOnDemand]: 47/59 looper letters, 317 selfloop transitions, 65 changer transitions 85/481 dead transitions. [2022-12-12 21:44:34,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 481 transitions, 9449 flow [2022-12-12 21:44:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 21:44:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 21:44:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2022-12-12 21:44:34,687 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3540489642184557 [2022-12-12 21:44:34,687 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2022-12-12 21:44:34,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 481 transitions, 9449 flow [2022-12-12 21:44:34,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 396 transitions, 7743 flow [2022-12-12 21:44:34,721 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 396 transitions, 7743 flow [2022-12-12 21:44:34,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2022-12-12 21:44:34,721 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:34,721 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:34,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 21:44:34,721 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:34,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:34,722 INFO L85 PathProgramCache]: Analyzing trace with hash 471275087, now seen corresponding path program 1 times [2022-12-12 21:44:34,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:34,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109252648] [2022-12-12 21:44:34,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:34,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:36,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:36,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:36,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109252648] [2022-12-12 21:44:36,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109252648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:36,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:36,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-12 21:44:36,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376187346] [2022-12-12 21:44:36,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:36,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 21:44:36,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:36,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 21:44:36,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-12 21:44:36,651 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2022-12-12 21:44:36,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 396 transitions, 7743 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2022-12-12 21:44:36,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:36,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2022-12-12 21:44:36,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:38,882 INFO L130 PetriNetUnfolder]: 5339/9695 cut-off events. [2022-12-12 21:44:38,883 INFO L131 PetriNetUnfolder]: For 38575/38575 co-relation queries the response was YES. [2022-12-12 21:44:38,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94999 conditions, 9695 events. 5339/9695 cut-off events. For 38575/38575 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 75094 event pairs, 292 based on Foata normal form. 207/8735 useless extension candidates. Maximal degree in co-relation 94961. Up to 8493 conditions per place. [2022-12-12 21:44:38,941 INFO L137 encePairwiseOnDemand]: 46/59 looper letters, 539 selfloop transitions, 187 changer transitions 115/855 dead transitions. [2022-12-12 21:44:38,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 855 transitions, 18611 flow [2022-12-12 21:44:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 21:44:38,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 21:44:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 252 transitions. [2022-12-12 21:44:38,942 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3559322033898305 [2022-12-12 21:44:38,943 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, 24 predicate places. [2022-12-12 21:44:38,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 855 transitions, 18611 flow [2022-12-12 21:44:38,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 740 transitions, 16081 flow [2022-12-12 21:44:38,989 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 740 transitions, 16081 flow [2022-12-12 21:44:38,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2022-12-12 21:44:38,989 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:38,990 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:38,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 21:44:38,990 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:38,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:38,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1127973897, now seen corresponding path program 2 times [2022-12-12 21:44:38,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:38,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917296142] [2022-12-12 21:44:38,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:38,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:40,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:40,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917296142] [2022-12-12 21:44:40,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917296142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:40,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:40,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 21:44:40,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387022521] [2022-12-12 21:44:40,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:40,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 21:44:40,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:40,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 21:44:40,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-12 21:44:40,189 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2022-12-12 21:44:40,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 740 transitions, 16081 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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) [2022-12-12 21:44:40,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:40,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2022-12-12 21:44:40,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:42,069 INFO L130 PetriNetUnfolder]: 4834/8564 cut-off events. [2022-12-12 21:44:42,069 INFO L131 PetriNetUnfolder]: For 41739/41739 co-relation queries the response was YES. [2022-12-12 21:44:42,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92564 conditions, 8564 events. 4834/8564 cut-off events. For 41739/41739 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 62692 event pairs, 186 based on Foata normal form. 162/7713 useless extension candidates. Maximal degree in co-relation 92523. Up to 7372 conditions per place. [2022-12-12 21:44:42,126 INFO L137 encePairwiseOnDemand]: 47/59 looper letters, 718 selfloop transitions, 126 changer transitions 77/935 dead transitions. [2022-12-12 21:44:42,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 935 transitions, 22213 flow [2022-12-12 21:44:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 21:44:42,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 21:44:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2022-12-12 21:44:42,128 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.352165725047081 [2022-12-12 21:44:42,129 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, 32 predicate places. [2022-12-12 21:44:42,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 935 transitions, 22213 flow [2022-12-12 21:44:42,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 858 transitions, 20365 flow [2022-12-12 21:44:42,178 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 858 transitions, 20365 flow [2022-12-12 21:44:42,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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) [2022-12-12 21:44:42,178 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:42,178 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:42,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 21:44:42,178 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:42,178 INFO L85 PathProgramCache]: Analyzing trace with hash -309665845, now seen corresponding path program 3 times [2022-12-12 21:44:42,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:42,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733061456] [2022-12-12 21:44:42,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:42,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:43,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:43,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733061456] [2022-12-12 21:44:43,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733061456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:43,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:43,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 21:44:43,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608952863] [2022-12-12 21:44:43,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:43,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 21:44:43,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:43,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 21:44:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-12 21:44:43,151 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2022-12-12 21:44:43,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 858 transitions, 20365 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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) [2022-12-12 21:44:43,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:43,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2022-12-12 21:44:43,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:44,716 INFO L130 PetriNetUnfolder]: 4804/8453 cut-off events. [2022-12-12 21:44:44,716 INFO L131 PetriNetUnfolder]: For 50125/50125 co-relation queries the response was YES. [2022-12-12 21:44:44,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98649 conditions, 8453 events. 4804/8453 cut-off events. For 50125/50125 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 60997 event pairs, 180 based on Foata normal form. 126/7582 useless extension candidates. Maximal degree in co-relation 98605. Up to 7264 conditions per place. [2022-12-12 21:44:44,770 INFO L137 encePairwiseOnDemand]: 49/59 looper letters, 637 selfloop transitions, 51 changer transitions 196/898 dead transitions. [2022-12-12 21:44:44,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 898 transitions, 23093 flow [2022-12-12 21:44:44,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:44:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:44:44,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2022-12-12 21:44:44,771 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36271186440677966 [2022-12-12 21:44:44,772 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, 35 predicate places. [2022-12-12 21:44:44,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 898 transitions, 23093 flow [2022-12-12 21:44:44,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 702 transitions, 17997 flow [2022-12-12 21:44:44,818 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 702 transitions, 17997 flow [2022-12-12 21:44:44,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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) [2022-12-12 21:44:44,819 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:44,819 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:44,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 21:44:44,819 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:44,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:44,819 INFO L85 PathProgramCache]: Analyzing trace with hash 795052373, now seen corresponding path program 4 times [2022-12-12 21:44:44,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:44,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088505883] [2022-12-12 21:44:44,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:44,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:45,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:45,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088505883] [2022-12-12 21:44:45,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088505883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:45,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:45,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 21:44:45,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207848801] [2022-12-12 21:44:45,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:45,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 21:44:45,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:45,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 21:44:45,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 21:44:45,195 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 59 [2022-12-12 21:44:45,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 702 transitions, 17997 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2022-12-12 21:44:45,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:45,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 59 [2022-12-12 21:44:45,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:46,203 INFO L130 PetriNetUnfolder]: 2813/5086 cut-off events. [2022-12-12 21:44:46,203 INFO L131 PetriNetUnfolder]: For 36571/36571 co-relation queries the response was YES. [2022-12-12 21:44:46,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64153 conditions, 5086 events. 2813/5086 cut-off events. For 36571/36571 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 34509 event pairs, 8 based on Foata normal form. 414/4887 useless extension candidates. Maximal degree in co-relation 64106. Up to 4228 conditions per place. [2022-12-12 21:44:46,236 INFO L137 encePairwiseOnDemand]: 47/59 looper letters, 403 selfloop transitions, 184 changer transitions 127/719 dead transitions. [2022-12-12 21:44:46,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 719 transitions, 19807 flow [2022-12-12 21:44:46,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 21:44:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 21:44:46,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2022-12-12 21:44:46,238 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.31234866828087166 [2022-12-12 21:44:46,239 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, 41 predicate places. [2022-12-12 21:44:46,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 719 transitions, 19807 flow [2022-12-12 21:44:46,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 592 transitions, 16308 flow [2022-12-12 21:44:46,269 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 592 transitions, 16308 flow [2022-12-12 21:44:46,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2022-12-12 21:44:46,269 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:46,269 INFO L214 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] [2022-12-12 21:44:46,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 21:44:46,269 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:46,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:46,269 INFO L85 PathProgramCache]: Analyzing trace with hash 636774557, now seen corresponding path program 1 times [2022-12-12 21:44:46,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:46,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015746273] [2022-12-12 21:44:46,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:46,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:46,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:46,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015746273] [2022-12-12 21:44:46,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015746273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:46,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:46,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:44:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498354212] [2022-12-12 21:44:46,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:46,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:44:46,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:46,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:44:46,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:44:46,433 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 59 [2022-12-12 21:44:46,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 592 transitions, 16308 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-12-12 21:44:46,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:46,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 59 [2022-12-12 21:44:46,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:47,686 INFO L130 PetriNetUnfolder]: 3787/6761 cut-off events. [2022-12-12 21:44:47,686 INFO L131 PetriNetUnfolder]: For 88914/88942 co-relation queries the response was YES. [2022-12-12 21:44:47,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88033 conditions, 6761 events. 3787/6761 cut-off events. For 88914/88942 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 47769 event pairs, 11 based on Foata normal form. 81/5945 useless extension candidates. Maximal degree in co-relation 87983. Up to 5364 conditions per place. [2022-12-12 21:44:47,721 INFO L137 encePairwiseOnDemand]: 56/59 looper letters, 421 selfloop transitions, 26 changer transitions 562/1021 dead transitions. [2022-12-12 21:44:47,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 1021 transitions, 30334 flow [2022-12-12 21:44:47,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:44:47,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:44:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2022-12-12 21:44:47,723 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3728813559322034 [2022-12-12 21:44:47,723 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, 42 predicate places. [2022-12-12 21:44:47,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 1021 transitions, 30334 flow [2022-12-12 21:44:47,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 459 transitions, 13501 flow [2022-12-12 21:44:47,750 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 459 transitions, 13501 flow [2022-12-12 21:44:47,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-12-12 21:44:47,750 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:47,750 INFO L214 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] [2022-12-12 21:44:47,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-12 21:44:47,750 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:47,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:47,751 INFO L85 PathProgramCache]: Analyzing trace with hash 218280929, now seen corresponding path program 2 times [2022-12-12 21:44:47,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:47,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679120750] [2022-12-12 21:44:47,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:47,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:48,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:48,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679120750] [2022-12-12 21:44:48,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679120750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:48,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:48,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 21:44:48,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39017028] [2022-12-12 21:44:48,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:48,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 21:44:48,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 21:44:48,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-12 21:44:48,585 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2022-12-12 21:44:48,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 459 transitions, 13501 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 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) [2022-12-12 21:44:48,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:48,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2022-12-12 21:44:48,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:49,447 INFO L130 PetriNetUnfolder]: 1980/3651 cut-off events. [2022-12-12 21:44:49,448 INFO L131 PetriNetUnfolder]: For 36683/36684 co-relation queries the response was YES. [2022-12-12 21:44:49,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51226 conditions, 3651 events. 1980/3651 cut-off events. For 36683/36684 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 23675 event pairs, 13 based on Foata normal form. 54/3145 useless extension candidates. Maximal degree in co-relation 51173. Up to 3036 conditions per place. [2022-12-12 21:44:49,462 INFO L137 encePairwiseOnDemand]: 49/59 looper letters, 65 selfloop transitions, 8 changer transitions 508/593 dead transitions. [2022-12-12 21:44:49,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 593 transitions, 18681 flow [2022-12-12 21:44:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 21:44:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 21:44:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2022-12-12 21:44:49,464 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3099273607748184 [2022-12-12 21:44:49,464 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, 46 predicate places. [2022-12-12 21:44:49,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 593 transitions, 18681 flow [2022-12-12 21:44:49,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 85 transitions, 2425 flow [2022-12-12 21:44:49,474 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 2425 flow [2022-12-12 21:44:49,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 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) [2022-12-12 21:44:49,474 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:49,474 INFO L214 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] [2022-12-12 21:44:49,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-12 21:44:49,475 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 21:44:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:49,475 INFO L85 PathProgramCache]: Analyzing trace with hash 995463624, now seen corresponding path program 1 times [2022-12-12 21:44:49,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:49,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383663505] [2022-12-12 21:44:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:49,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:44:50,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:50,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383663505] [2022-12-12 21:44:50,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383663505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:50,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:50,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 21:44:50,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178212722] [2022-12-12 21:44:50,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:50,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 21:44:50,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:50,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 21:44:50,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-12 21:44:50,154 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 59 [2022-12-12 21:44:50,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 2425 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 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) [2022-12-12 21:44:50,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:50,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 59 [2022-12-12 21:44:50,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:50,305 INFO L130 PetriNetUnfolder]: 400/773 cut-off events. [2022-12-12 21:44:50,306 INFO L131 PetriNetUnfolder]: For 10572/10573 co-relation queries the response was YES. [2022-12-12 21:44:50,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11229 conditions, 773 events. 400/773 cut-off events. For 10572/10573 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3753 event pairs, 2 based on Foata normal form. 28/658 useless extension candidates. Maximal degree in co-relation 11173. Up to 693 conditions per place. [2022-12-12 21:44:50,308 INFO L137 encePairwiseOnDemand]: 52/59 looper letters, 0 selfloop transitions, 0 changer transitions 111/111 dead transitions. [2022-12-12 21:44:50,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 111 transitions, 3455 flow [2022-12-12 21:44:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:44:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:44:50,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2022-12-12 21:44:50,309 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2457627118644068 [2022-12-12 21:44:50,309 INFO L295 CegarLoopForPetriNet]: 68 programPoint places, 36 predicate places. [2022-12-12 21:44:50,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 111 transitions, 3455 flow [2022-12-12 21:44:50,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 21:44:50,310 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 21:44:50,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 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) [2022-12-12 21:44:50,312 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-12 21:44:50,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-12 21:44:50,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-12 21:44:50,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-12 21:44:50,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-12-12 21:44:50,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-12 21:44:50,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-12 21:44:50,313 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:50,316 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 21:44:50,316 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 21:44:50,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 09:44:50 BasicIcfg [2022-12-12 21:44:50,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 21:44:50,319 INFO L158 Benchmark]: Toolchain (without parser) took 40641.21ms. Allocated memory was 180.4MB in the beginning and 3.6GB in the end (delta: 3.5GB). Free memory was 153.8MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-12-12 21:44:50,319 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory was 156.1MB in the beginning and 156.1MB in the end (delta: 63.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 21:44:50,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.71ms. Allocated memory is still 180.4MB. Free memory was 153.3MB in the beginning and 122.3MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-12-12 21:44:50,319 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.82ms. Allocated memory is still 180.4MB. Free memory was 122.3MB in the beginning and 119.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 21:44:50,319 INFO L158 Benchmark]: Boogie Preprocessor took 25.73ms. Allocated memory is still 180.4MB. Free memory was 119.2MB in the beginning and 116.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 21:44:50,319 INFO L158 Benchmark]: RCFGBuilder took 620.85ms. Allocated memory is still 180.4MB. Free memory was 116.6MB in the beginning and 101.5MB in the end (delta: 15.2MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. [2022-12-12 21:44:50,319 INFO L158 Benchmark]: TraceAbstraction took 39453.06ms. Allocated memory was 180.4MB in the beginning and 3.6GB in the end (delta: 3.5GB). Free memory was 100.4MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-12-12 21:44:50,320 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 180.4MB. Free memory was 156.1MB in the beginning and 156.1MB in the end (delta: 63.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 483.71ms. Allocated memory is still 180.4MB. Free memory was 153.3MB in the beginning and 122.3MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.82ms. Allocated memory is still 180.4MB. Free memory was 122.3MB in the beginning and 119.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.73ms. Allocated memory is still 180.4MB. Free memory was 119.2MB in the beginning and 116.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 620.85ms. Allocated memory is still 180.4MB. Free memory was 116.6MB in the beginning and 101.5MB in the end (delta: 15.2MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. * TraceAbstraction took 39453.06ms. Allocated memory was 180.4MB in the beginning and 3.6GB in the end (delta: 3.5GB). Free memory was 100.4MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3s, 117 PlacesBefore, 68 PlacesAfterwards, 109 TransitionsBefore, 59 TransitionsAfterwards, 2202 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 39 TrivialYvCompositions, 42 ConcurrentYvCompositions, 5 ChoiceCompositions, 87 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3762, independent: 3622, independent conditional: 3622, independent unconditional: 0, dependent: 140, dependent conditional: 140, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3762, independent: 3622, independent conditional: 0, independent unconditional: 3622, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3762, independent: 3622, independent conditional: 0, independent unconditional: 3622, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3762, independent: 3622, independent conditional: 0, independent unconditional: 3622, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2040, independent: 1985, independent conditional: 0, independent unconditional: 1985, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2040, independent: 1956, independent conditional: 0, independent unconditional: 1956, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 84, independent: 29, independent conditional: 0, independent unconditional: 29, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 441, independent: 26, independent conditional: 0, independent unconditional: 26, dependent: 415, dependent conditional: 0, dependent unconditional: 415, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3762, independent: 1637, independent conditional: 0, independent unconditional: 1637, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 2040, unknown conditional: 0, unknown unconditional: 2040] , Statistics on independence cache: Total cache size (in pairs): 3979, Positive cache size: 3924, Positive conditional cache size: 0, Positive unconditional cache size: 3924, Negative cache size: 55, Negative conditional cache size: 0, Negative unconditional cache size: 55, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 142 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.5s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 39.3s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 20.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 865 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 865 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 343 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3384 IncrementalHoareTripleChecker+Invalid, 3727 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 343 mSolverCounterUnsat, 1 mSDtfsCounter, 3384 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20365occurred in iteration=11, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 59245 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 245 ConstructedInterpolants, 0 QuantifiedInterpolants, 2948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 21:44:50,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...