/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:28:18,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:28:18,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:28:18,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:28:18,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:28:18,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:28:18,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:28:18,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:28:18,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:28:18,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:28:18,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:28:18,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:28:18,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:28:18,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:28:18,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:28:18,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:28:18,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:28:18,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:28:18,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:28:18,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:28:18,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:28:18,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:28:18,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:28:18,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:28:18,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 20:28:18,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 20:28:18,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 20:28:18,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 20:28:18,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 20:28:18,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 20:28:18,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 20:28:18,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 20:28:18,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 20:28:18,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 20:28:18,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 20:28:18,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 20:28:18,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 20:28:18,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 20:28:18,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:28:18,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:28:18,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:28:18,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-05 20:28:18,996 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:28:18,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:28:18,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:28:18,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:28:18,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:28:18,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:28:18,998 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:28:18,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:28:18,999 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:28:18,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:28:18,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:28:18,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:28:19,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:28:19,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:28:19,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:28:19,000 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:28:19,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:28:19,000 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:28:19,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:28:19,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:28:19,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:28:19,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:28:19,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:28:19,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:28:19,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:28:19,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:28:19,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:28:19,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:28:19,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:28:19,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:28:19,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:28:19,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:28:19,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:28:19,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:28:19,326 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:28:19,326 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:28:19,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2022-12-05 20:28:20,260 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:28:20,505 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:28:20,506 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2022-12-05 20:28:20,530 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daef2260f/6cbdbfe583f7425da730532ac5674d63/FLAG3f5b6e40c [2022-12-05 20:28:20,544 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daef2260f/6cbdbfe583f7425da730532ac5674d63 [2022-12-05 20:28:20,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:28:20,546 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:28:20,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:28:20,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:28:20,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:28:20,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:28:20" (1/1) ... [2022-12-05 20:28:20,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c5d193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:20, skipping insertion in model container [2022-12-05 20:28:20,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:28:20" (1/1) ... [2022-12-05 20:28:20,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:28:20,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:28:20,743 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] [2022-12-05 20:28:20,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,914 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,914 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,914 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,915 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,930 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,930 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,943 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,943 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,967 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,967 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,972 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:20,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:20,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:28:20,993 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:28:21,001 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] [2022-12-05 20:28:21,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:28:21,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:28:21,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:28:21,100 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:28:21,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21 WrapperNode [2022-12-05 20:28:21,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:28:21,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:28:21,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:28:21,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:28:21,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21" (1/1) ... [2022-12-05 20:28:21,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21" (1/1) ... [2022-12-05 20:28:21,169 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2022-12-05 20:28:21,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:28:21,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:28:21,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:28:21,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:28:21,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21" (1/1) ... [2022-12-05 20:28:21,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21" (1/1) ... [2022-12-05 20:28:21,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21" (1/1) ... [2022-12-05 20:28:21,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21" (1/1) ... [2022-12-05 20:28:21,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21" (1/1) ... [2022-12-05 20:28:21,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21" (1/1) ... [2022-12-05 20:28:21,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21" (1/1) ... [2022-12-05 20:28:21,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21" (1/1) ... [2022-12-05 20:28:21,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:28:21,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:28:21,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:28:21,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:28:21,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21" (1/1) ... [2022-12-05 20:28:21,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:28:21,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:28:21,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 20:28:21,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 20:28:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:28:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 20:28:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:28:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:28:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:28:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-05 20:28:21,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-05 20:28:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-05 20:28:21,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-05 20:28:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-05 20:28:21,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-05 20:28:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:28:21,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 20:28:21,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:28:21,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:28:21,320 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:28:21,482 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:28:21,484 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:28:21,875 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:28:22,053 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:28:22,053 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 20:28:22,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:28:22 BoogieIcfgContainer [2022-12-05 20:28:22,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:28:22,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:28:22,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:28:22,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:28:22,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:28:20" (1/3) ... [2022-12-05 20:28:22,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b19fa16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:28:22, skipping insertion in model container [2022-12-05 20:28:22,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:28:21" (2/3) ... [2022-12-05 20:28:22,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b19fa16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:28:22, skipping insertion in model container [2022-12-05 20:28:22,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:28:22" (3/3) ... [2022-12-05 20:28:22,066 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2022-12-05 20:28:22,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:28:22,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-05 20:28:22,084 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:28:22,136 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 20:28:22,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 239 flow [2022-12-05 20:28:22,222 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2022-12-05 20:28:22,222 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:28:22,228 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. [2022-12-05 20:28:22,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 239 flow [2022-12-05 20:28:22,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 109 transitions, 227 flow [2022-12-05 20:28:22,233 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:28:22,251 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 109 transitions, 227 flow [2022-12-05 20:28:22,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 109 transitions, 227 flow [2022-12-05 20:28:22,291 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2022-12-05 20:28:22,291 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:28:22,293 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. [2022-12-05 20:28:22,296 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 109 transitions, 227 flow [2022-12-05 20:28:22,297 INFO L188 LiptonReduction]: Number of co-enabled transitions 2202 [2022-12-05 20:28:26,837 INFO L203 LiptonReduction]: Total number of compositions: 83 [2022-12-05 20:28:26,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:28:26,861 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;@9554729, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:28:26,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-05 20:28:26,866 INFO L130 PetriNetUnfolder]: 1/18 cut-off events. [2022-12-05 20:28:26,869 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:28:26,873 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:26,873 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:26,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:28:26,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash -222839381, now seen corresponding path program 1 times [2022-12-05 20:28:26,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:26,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663208235] [2022-12-05 20:28:26,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:26,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:27,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:27,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:27,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663208235] [2022-12-05 20:28:27,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663208235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:27,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:27,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:28:27,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788018771] [2022-12-05 20:28:27,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:27,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:28:27,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:27,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:28:27,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:28:27,260 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:27,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:27,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:27,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:27,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:27,933 INFO L130 PetriNetUnfolder]: 2591/3744 cut-off events. [2022-12-05 20:28:27,934 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-05 20:28:27,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7563 conditions, 3744 events. 2591/3744 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17473 event pairs, 371 based on Foata normal form. 0/3383 useless extension candidates. Maximal degree in co-relation 7552. Up to 3121 conditions per place. [2022-12-05 20:28:27,958 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 33 selfloop transitions, 2 changer transitions 4/40 dead transitions. [2022-12-05 20:28:27,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 167 flow [2022-12-05 20:28:27,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:28:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:28:27,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2022-12-05 20:28:27,966 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2022-12-05 20:28:27,967 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 67 flow. Second operand 3 states and 47 transitions. [2022-12-05 20:28:27,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 167 flow [2022-12-05 20:28:27,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 20:28:27,985 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 58 flow [2022-12-05 20:28:27,986 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2022-12-05 20:28:27,989 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2022-12-05 20:28:27,989 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 58 flow [2022-12-05 20:28:27,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:27,989 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:27,989 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:27,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:28:27,989 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)] === [2022-12-05 20:28:27,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:27,990 INFO L85 PathProgramCache]: Analyzing trace with hash 599732064, now seen corresponding path program 1 times [2022-12-05 20:28:27,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:27,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906975894] [2022-12-05 20:28:27,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:27,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:28,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:28,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906975894] [2022-12-05 20:28:28,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906975894] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:28,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:28,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:28:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473400959] [2022-12-05 20:28:28,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:28,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:28:28,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:28,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:28:28,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:28:28,307 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:28,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:28,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:28,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:28,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:28,599 INFO L130 PetriNetUnfolder]: 1466/2169 cut-off events. [2022-12-05 20:28:28,599 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-12-05 20:28:28,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4502 conditions, 2169 events. 1466/2169 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9196 event pairs, 698 based on Foata normal form. 90/2258 useless extension candidates. Maximal degree in co-relation 4492. Up to 1189 conditions per place. [2022-12-05 20:28:28,609 INFO L137 encePairwiseOnDemand]: 26/29 looper letters, 32 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2022-12-05 20:28:28,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 148 flow [2022-12-05 20:28:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:28:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:28:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2022-12-05 20:28:28,611 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2022-12-05 20:28:28,611 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 58 flow. Second operand 3 states and 38 transitions. [2022-12-05 20:28:28,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 148 flow [2022-12-05 20:28:28,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:28:28,613 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 62 flow [2022-12-05 20:28:28,613 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2022-12-05 20:28:28,614 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2022-12-05 20:28:28,614 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 62 flow [2022-12-05 20:28:28,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:28,614 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:28,614 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:28,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:28:28,615 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)] === [2022-12-05 20:28:28,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:28,615 INFO L85 PathProgramCache]: Analyzing trace with hash -297827621, now seen corresponding path program 1 times [2022-12-05 20:28:28,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:28,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496660659] [2022-12-05 20:28:28,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:28,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:29,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:29,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:29,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496660659] [2022-12-05 20:28:29,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496660659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:29,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:29,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 20:28:29,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710261147] [2022-12-05 20:28:29,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:29,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 20:28:29,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:29,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 20:28:29,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-05 20:28:29,397 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:29,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:29,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:29,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:29,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:29,888 INFO L130 PetriNetUnfolder]: 2017/2976 cut-off events. [2022-12-05 20:28:29,888 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2022-12-05 20:28:29,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6451 conditions, 2976 events. 2017/2976 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13896 event pairs, 1134 based on Foata normal form. 30/3005 useless extension candidates. Maximal degree in co-relation 6440. Up to 2320 conditions per place. [2022-12-05 20:28:29,900 INFO L137 encePairwiseOnDemand]: 18/29 looper letters, 34 selfloop transitions, 14 changer transitions 0/49 dead transitions. [2022-12-05 20:28:29,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 211 flow [2022-12-05 20:28:29,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:28:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:28:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2022-12-05 20:28:29,903 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3724137931034483 [2022-12-05 20:28:29,906 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 62 flow. Second operand 5 states and 54 transitions. [2022-12-05 20:28:29,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 211 flow [2022-12-05 20:28:29,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:28:29,915 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 142 flow [2022-12-05 20:28:29,915 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2022-12-05 20:28:29,916 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2022-12-05 20:28:29,916 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 142 flow [2022-12-05 20:28:29,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:29,916 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:29,916 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:29,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:28:29,917 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)] === [2022-12-05 20:28:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:29,917 INFO L85 PathProgramCache]: Analyzing trace with hash -644169381, now seen corresponding path program 1 times [2022-12-05 20:28:29,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:29,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755045166] [2022-12-05 20:28:29,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:29,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:30,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:30,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755045166] [2022-12-05 20:28:30,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755045166] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:30,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:30,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:28:30,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974419713] [2022-12-05 20:28:30,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:30,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:28:30,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:30,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:28:30,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:28:30,130 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:30,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:30,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:30,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:30,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:30,458 INFO L130 PetriNetUnfolder]: 1538/2411 cut-off events. [2022-12-05 20:28:30,458 INFO L131 PetriNetUnfolder]: For 1320/1320 co-relation queries the response was YES. [2022-12-05 20:28:30,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6752 conditions, 2411 events. 1538/2411 cut-off events. For 1320/1320 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12023 event pairs, 238 based on Foata normal form. 262/2672 useless extension candidates. Maximal degree in co-relation 6739. Up to 1113 conditions per place. [2022-12-05 20:28:30,467 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 61 selfloop transitions, 4 changer transitions 53/119 dead transitions. [2022-12-05 20:28:30,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 119 transitions, 719 flow [2022-12-05 20:28:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:28:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:28:30,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2022-12-05 20:28:30,469 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5310344827586206 [2022-12-05 20:28:30,469 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 142 flow. Second operand 5 states and 77 transitions. [2022-12-05 20:28:30,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 119 transitions, 719 flow [2022-12-05 20:28:30,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 119 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:28:30,471 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 177 flow [2022-12-05 20:28:30,471 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2022-12-05 20:28:30,472 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2022-12-05 20:28:30,472 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 177 flow [2022-12-05 20:28:30,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:30,472 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:30,472 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:30,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:28:30,473 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)] === [2022-12-05 20:28:30,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1011437616, now seen corresponding path program 1 times [2022-12-05 20:28:30,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:30,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767776607] [2022-12-05 20:28:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:30,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:31,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:31,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767776607] [2022-12-05 20:28:31,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767776607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:31,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:31,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 20:28:31,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125814298] [2022-12-05 20:28:31,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:31,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 20:28:31,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 20:28:31,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-05 20:28:31,298 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:31,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 177 flow. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:31,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:31,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:31,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:31,847 INFO L130 PetriNetUnfolder]: 1720/2833 cut-off events. [2022-12-05 20:28:31,847 INFO L131 PetriNetUnfolder]: For 2194/2194 co-relation queries the response was YES. [2022-12-05 20:28:31,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9315 conditions, 2833 events. 1720/2833 cut-off events. For 2194/2194 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15411 event pairs, 626 based on Foata normal form. 60/2893 useless extension candidates. Maximal degree in co-relation 9298. Up to 1527 conditions per place. [2022-12-05 20:28:31,863 INFO L137 encePairwiseOnDemand]: 18/29 looper letters, 76 selfloop transitions, 15 changer transitions 12/104 dead transitions. [2022-12-05 20:28:31,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 104 transitions, 668 flow [2022-12-05 20:28:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:28:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:28:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2022-12-05 20:28:31,867 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2022-12-05 20:28:31,867 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 177 flow. Second operand 7 states and 84 transitions. [2022-12-05 20:28:31,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 104 transitions, 668 flow [2022-12-05 20:28:31,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 104 transitions, 648 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-05 20:28:31,876 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 324 flow [2022-12-05 20:28:31,876 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2022-12-05 20:28:31,878 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2022-12-05 20:28:31,878 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 324 flow [2022-12-05 20:28:31,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:31,878 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:31,878 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:31,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:28:31,878 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)] === [2022-12-05 20:28:31,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:31,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1615888828, now seen corresponding path program 1 times [2022-12-05 20:28:31,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:31,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614167495] [2022-12-05 20:28:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:31,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:32,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:32,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614167495] [2022-12-05 20:28:32,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614167495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:32,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:32,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 20:28:32,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798087810] [2022-12-05 20:28:32,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:32,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 20:28:32,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:32,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 20:28:32,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-05 20:28:32,940 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:32,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 324 flow. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:32,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:32,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:32,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:33,454 INFO L130 PetriNetUnfolder]: 1732/2849 cut-off events. [2022-12-05 20:28:33,454 INFO L131 PetriNetUnfolder]: For 4747/4747 co-relation queries the response was YES. [2022-12-05 20:28:33,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10811 conditions, 2849 events. 1732/2849 cut-off events. For 4747/4747 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15540 event pairs, 556 based on Foata normal form. 42/2891 useless extension candidates. Maximal degree in co-relation 10789. Up to 1971 conditions per place. [2022-12-05 20:28:33,472 INFO L137 encePairwiseOnDemand]: 19/29 looper letters, 81 selfloop transitions, 16 changer transitions 15/113 dead transitions. [2022-12-05 20:28:33,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 113 transitions, 841 flow [2022-12-05 20:28:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 20:28:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 20:28:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2022-12-05 20:28:33,474 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2022-12-05 20:28:33,474 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 324 flow. Second operand 6 states and 81 transitions. [2022-12-05 20:28:33,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 113 transitions, 841 flow [2022-12-05 20:28:33,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 113 transitions, 835 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-05 20:28:33,484 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 462 flow [2022-12-05 20:28:33,484 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=462, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2022-12-05 20:28:33,486 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2022-12-05 20:28:33,486 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 462 flow [2022-12-05 20:28:33,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:33,487 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:33,487 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:33,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 20:28:33,487 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)] === [2022-12-05 20:28:33,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:33,487 INFO L85 PathProgramCache]: Analyzing trace with hash 716051140, now seen corresponding path program 2 times [2022-12-05 20:28:33,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:33,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707857777] [2022-12-05 20:28:33,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:33,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:34,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:34,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707857777] [2022-12-05 20:28:34,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707857777] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:34,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:34,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 20:28:34,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551755915] [2022-12-05 20:28:34,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:34,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 20:28:34,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:34,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 20:28:34,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-05 20:28:34,451 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:34,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 462 flow. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:34,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:34,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:34,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:34,941 INFO L130 PetriNetUnfolder]: 1718/2833 cut-off events. [2022-12-05 20:28:34,941 INFO L131 PetriNetUnfolder]: For 7689/7689 co-relation queries the response was YES. [2022-12-05 20:28:34,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11992 conditions, 2833 events. 1718/2833 cut-off events. For 7689/7689 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15595 event pairs, 437 based on Foata normal form. 48/2880 useless extension candidates. Maximal degree in co-relation 11965. Up to 1487 conditions per place. [2022-12-05 20:28:34,960 INFO L137 encePairwiseOnDemand]: 19/29 looper letters, 69 selfloop transitions, 22 changer transitions 10/102 dead transitions. [2022-12-05 20:28:34,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 102 transitions, 877 flow [2022-12-05 20:28:34,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:28:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:28:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2022-12-05 20:28:34,962 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45517241379310347 [2022-12-05 20:28:34,962 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 462 flow. Second operand 5 states and 66 transitions. [2022-12-05 20:28:34,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 102 transitions, 877 flow [2022-12-05 20:28:34,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 844 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-12-05 20:28:34,972 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 482 flow [2022-12-05 20:28:34,972 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2022-12-05 20:28:34,973 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2022-12-05 20:28:34,973 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 482 flow [2022-12-05 20:28:34,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:34,973 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:34,973 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:34,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 20:28:34,973 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)] === [2022-12-05 20:28:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:34,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1632011686, now seen corresponding path program 3 times [2022-12-05 20:28:34,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:34,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174589901] [2022-12-05 20:28:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:34,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:35,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:35,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174589901] [2022-12-05 20:28:35,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174589901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:35,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:35,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:28:35,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129780268] [2022-12-05 20:28:35,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:35,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:28:35,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:35,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:28:35,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:28:35,118 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:35,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 482 flow. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:35,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:35,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:35,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:35,452 INFO L130 PetriNetUnfolder]: 1173/2059 cut-off events. [2022-12-05 20:28:35,453 INFO L131 PetriNetUnfolder]: For 6504/6504 co-relation queries the response was YES. [2022-12-05 20:28:35,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8635 conditions, 2059 events. 1173/2059 cut-off events. For 6504/6504 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11520 event pairs, 199 based on Foata normal form. 221/2279 useless extension candidates. Maximal degree in co-relation 8606. Up to 650 conditions per place. [2022-12-05 20:28:35,464 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 102 selfloop transitions, 7 changer transitions 60/170 dead transitions. [2022-12-05 20:28:35,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 170 transitions, 1633 flow [2022-12-05 20:28:35,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 20:28:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 20:28:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2022-12-05 20:28:35,465 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2022-12-05 20:28:35,465 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 482 flow. Second operand 6 states and 94 transitions. [2022-12-05 20:28:35,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 170 transitions, 1633 flow [2022-12-05 20:28:35,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 170 transitions, 1530 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-05 20:28:35,476 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 490 flow [2022-12-05 20:28:35,476 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2022-12-05 20:28:35,477 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2022-12-05 20:28:35,477 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 490 flow [2022-12-05 20:28:35,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:35,478 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:35,478 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:35,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 20:28:35,478 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)] === [2022-12-05 20:28:35,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash 639847086, now seen corresponding path program 1 times [2022-12-05 20:28:35,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:35,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665287170] [2022-12-05 20:28:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:35,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:36,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:36,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665287170] [2022-12-05 20:28:36,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665287170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:36,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:36,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 20:28:36,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130713959] [2022-12-05 20:28:36,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:36,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-05 20:28:36,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:36,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-05 20:28:36,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-05 20:28:36,987 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:36,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 490 flow. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:36,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:36,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:36,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:37,494 INFO L130 PetriNetUnfolder]: 1093/2012 cut-off events. [2022-12-05 20:28:37,495 INFO L131 PetriNetUnfolder]: For 6554/6554 co-relation queries the response was YES. [2022-12-05 20:28:37,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9021 conditions, 2012 events. 1093/2012 cut-off events. For 6554/6554 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11684 event pairs, 168 based on Foata normal form. 11/2023 useless extension candidates. Maximal degree in co-relation 8989. Up to 947 conditions per place. [2022-12-05 20:28:37,504 INFO L137 encePairwiseOnDemand]: 21/29 looper letters, 79 selfloop transitions, 23 changer transitions 40/143 dead transitions. [2022-12-05 20:28:37,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 143 transitions, 1323 flow [2022-12-05 20:28:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:28:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:28:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2022-12-05 20:28:37,506 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.43349753694581283 [2022-12-05 20:28:37,506 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 490 flow. Second operand 7 states and 88 transitions. [2022-12-05 20:28:37,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 143 transitions, 1323 flow [2022-12-05 20:28:37,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 143 transitions, 1216 flow, removed 40 selfloop flow, removed 4 redundant places. [2022-12-05 20:28:37,521 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 586 flow [2022-12-05 20:28:37,521 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=586, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2022-12-05 20:28:37,522 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 33 predicate places. [2022-12-05 20:28:37,522 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 586 flow [2022-12-05 20:28:37,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:37,522 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:37,522 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:37,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 20:28:37,522 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)] === [2022-12-05 20:28:37,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash 470054328, now seen corresponding path program 2 times [2022-12-05 20:28:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:37,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069722364] [2022-12-05 20:28:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:37,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:37,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:37,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069722364] [2022-12-05 20:28:37,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069722364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:37,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:37,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 20:28:37,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479070393] [2022-12-05 20:28:37,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:37,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 20:28:37,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 20:28:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-05 20:28:37,709 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:37,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 586 flow. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:37,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:37,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:37,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:37,986 INFO L130 PetriNetUnfolder]: 716/1326 cut-off events. [2022-12-05 20:28:37,986 INFO L131 PetriNetUnfolder]: For 4833/4833 co-relation queries the response was YES. [2022-12-05 20:28:37,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5980 conditions, 1326 events. 716/1326 cut-off events. For 4833/4833 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7195 event pairs, 172 based on Foata normal form. 43/1368 useless extension candidates. Maximal degree in co-relation 5947. Up to 619 conditions per place. [2022-12-05 20:28:37,996 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 102 selfloop transitions, 10 changer transitions 25/138 dead transitions. [2022-12-05 20:28:37,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 138 transitions, 1425 flow [2022-12-05 20:28:37,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:28:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:28:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2022-12-05 20:28:37,998 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.39901477832512317 [2022-12-05 20:28:37,998 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 586 flow. Second operand 7 states and 81 transitions. [2022-12-05 20:28:37,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 138 transitions, 1425 flow [2022-12-05 20:28:38,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 138 transitions, 1288 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-12-05 20:28:38,007 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 543 flow [2022-12-05 20:28:38,009 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=543, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2022-12-05 20:28:38,009 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2022-12-05 20:28:38,009 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 543 flow [2022-12-05 20:28:38,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:38,009 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:38,009 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:38,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 20:28:38,010 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)] === [2022-12-05 20:28:38,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash 83914122, now seen corresponding path program 1 times [2022-12-05 20:28:38,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:38,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208602724] [2022-12-05 20:28:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:38,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:39,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:39,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208602724] [2022-12-05 20:28:39,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208602724] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:39,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:39,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 20:28:39,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025858379] [2022-12-05 20:28:39,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:39,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 20:28:39,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:39,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 20:28:39,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-05 20:28:39,046 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:39,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 543 flow. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2022-12-05 20:28:39,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:39,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:39,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:39,404 INFO L130 PetriNetUnfolder]: 818/1535 cut-off events. [2022-12-05 20:28:39,405 INFO L131 PetriNetUnfolder]: For 5234/5234 co-relation queries the response was YES. [2022-12-05 20:28:39,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6807 conditions, 1535 events. 818/1535 cut-off events. For 5234/5234 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8792 event pairs, 174 based on Foata normal form. 1/1536 useless extension candidates. Maximal degree in co-relation 6775. Up to 879 conditions per place. [2022-12-05 20:28:39,414 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 76 selfloop transitions, 8 changer transitions 55/140 dead transitions. [2022-12-05 20:28:39,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 140 transitions, 1315 flow [2022-12-05 20:28:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 20:28:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 20:28:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2022-12-05 20:28:39,415 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2022-12-05 20:28:39,415 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 543 flow. Second operand 8 states and 84 transitions. [2022-12-05 20:28:39,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 140 transitions, 1315 flow [2022-12-05 20:28:39,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 140 transitions, 1223 flow, removed 20 selfloop flow, removed 6 redundant places. [2022-12-05 20:28:39,428 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 519 flow [2022-12-05 20:28:39,429 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=519, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2022-12-05 20:28:39,429 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 37 predicate places. [2022-12-05 20:28:39,429 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 519 flow [2022-12-05 20:28:39,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2022-12-05 20:28:39,429 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:39,429 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:39,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 20:28:39,430 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)] === [2022-12-05 20:28:39,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:39,430 INFO L85 PathProgramCache]: Analyzing trace with hash -636948808, now seen corresponding path program 2 times [2022-12-05 20:28:39,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:39,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478715892] [2022-12-05 20:28:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:39,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:39,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:39,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478715892] [2022-12-05 20:28:39,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478715892] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:39,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:39,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:28:39,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346694451] [2022-12-05 20:28:39,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:39,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:28:39,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:28:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:28:39,619 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 20:28:39,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 519 flow. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:39,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:39,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 20:28:39,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:39,897 INFO L130 PetriNetUnfolder]: 1002/1830 cut-off events. [2022-12-05 20:28:39,897 INFO L131 PetriNetUnfolder]: For 7086/7086 co-relation queries the response was YES. [2022-12-05 20:28:39,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8212 conditions, 1830 events. 1002/1830 cut-off events. For 7086/7086 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10489 event pairs, 179 based on Foata normal form. 2/1832 useless extension candidates. Maximal degree in co-relation 8182. Up to 1034 conditions per place. [2022-12-05 20:28:39,905 INFO L137 encePairwiseOnDemand]: 26/29 looper letters, 56 selfloop transitions, 1 changer transitions 65/122 dead transitions. [2022-12-05 20:28:39,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 122 transitions, 1171 flow [2022-12-05 20:28:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:28:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:28:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-12-05 20:28:39,906 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2022-12-05 20:28:39,906 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 519 flow. Second operand 4 states and 52 transitions. [2022-12-05 20:28:39,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 122 transitions, 1171 flow [2022-12-05 20:28:39,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 122 transitions, 1142 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-05 20:28:39,918 INFO L231 Difference]: Finished difference. Result has 72 places, 45 transitions, 316 flow [2022-12-05 20:28:39,919 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=72, PETRI_TRANSITIONS=45} [2022-12-05 20:28:39,919 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2022-12-05 20:28:39,919 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 45 transitions, 316 flow [2022-12-05 20:28:39,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:39,919 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:39,919 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:39,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 20:28:39,920 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)] === [2022-12-05 20:28:39,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1591155772, now seen corresponding path program 3 times [2022-12-05 20:28:39,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:39,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395380036] [2022-12-05 20:28:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:39,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:40,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:40,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395380036] [2022-12-05 20:28:40,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395380036] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:40,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:40,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 20:28:40,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705516499] [2022-12-05 20:28:40,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:40,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 20:28:40,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 20:28:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-05 20:28:40,372 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:40,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 45 transitions, 316 flow. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:40,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:40,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:40,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:40,585 INFO L130 PetriNetUnfolder]: 404/787 cut-off events. [2022-12-05 20:28:40,585 INFO L131 PetriNetUnfolder]: For 2688/2689 co-relation queries the response was YES. [2022-12-05 20:28:40,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3547 conditions, 787 events. 404/787 cut-off events. For 2688/2689 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3703 event pairs, 216 based on Foata normal form. 1/780 useless extension candidates. Maximal degree in co-relation 3517. Up to 620 conditions per place. [2022-12-05 20:28:40,589 INFO L137 encePairwiseOnDemand]: 19/29 looper letters, 38 selfloop transitions, 14 changer transitions 22/75 dead transitions. [2022-12-05 20:28:40,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 75 transitions, 648 flow [2022-12-05 20:28:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:28:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:28:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 59 transitions. [2022-12-05 20:28:40,591 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.29064039408866993 [2022-12-05 20:28:40,591 INFO L175 Difference]: Start difference. First operand has 72 places, 45 transitions, 316 flow. Second operand 7 states and 59 transitions. [2022-12-05 20:28:40,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 75 transitions, 648 flow [2022-12-05 20:28:40,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 609 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-12-05 20:28:40,596 INFO L231 Difference]: Finished difference. Result has 71 places, 49 transitions, 368 flow [2022-12-05 20:28:40,596 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=71, PETRI_TRANSITIONS=49} [2022-12-05 20:28:40,597 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 33 predicate places. [2022-12-05 20:28:40,597 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 49 transitions, 368 flow [2022-12-05 20:28:40,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:40,598 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:40,598 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:40,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-05 20:28:40,598 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)] === [2022-12-05 20:28:40,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:40,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2060167406, now seen corresponding path program 4 times [2022-12-05 20:28:40,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:40,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163020463] [2022-12-05 20:28:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:40,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:41,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:41,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163020463] [2022-12-05 20:28:41,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163020463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:41,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:41,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 20:28:41,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130375837] [2022-12-05 20:28:41,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:41,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 20:28:41,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:41,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 20:28:41,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-05 20:28:41,787 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:41,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 49 transitions, 368 flow. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2022-12-05 20:28:41,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:41,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:41,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:42,051 INFO L130 PetriNetUnfolder]: 374/739 cut-off events. [2022-12-05 20:28:42,051 INFO L131 PetriNetUnfolder]: For 3267/3268 co-relation queries the response was YES. [2022-12-05 20:28:42,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3614 conditions, 739 events. 374/739 cut-off events. For 3267/3268 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3446 event pairs, 214 based on Foata normal form. 1/730 useless extension candidates. Maximal degree in co-relation 3587. Up to 503 conditions per place. [2022-12-05 20:28:42,055 INFO L137 encePairwiseOnDemand]: 19/29 looper letters, 39 selfloop transitions, 14 changer transitions 30/84 dead transitions. [2022-12-05 20:28:42,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 767 flow [2022-12-05 20:28:42,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:28:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:28:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2022-12-05 20:28:42,056 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.31527093596059114 [2022-12-05 20:28:42,056 INFO L175 Difference]: Start difference. First operand has 71 places, 49 transitions, 368 flow. Second operand 7 states and 64 transitions. [2022-12-05 20:28:42,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 767 flow [2022-12-05 20:28:42,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 754 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-05 20:28:42,063 INFO L231 Difference]: Finished difference. Result has 75 places, 50 transitions, 413 flow [2022-12-05 20:28:42,063 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=413, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2022-12-05 20:28:42,063 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 37 predicate places. [2022-12-05 20:28:42,063 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 413 flow [2022-12-05 20:28:42,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2022-12-05 20:28:42,063 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:42,063 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:42,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-05 20:28:42,064 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)] === [2022-12-05 20:28:42,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:42,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1451532790, now seen corresponding path program 5 times [2022-12-05 20:28:42,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:42,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167990273] [2022-12-05 20:28:42,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:42,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:43,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:43,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167990273] [2022-12-05 20:28:43,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167990273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:43,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:43,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-05 20:28:43,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889557706] [2022-12-05 20:28:43,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:43,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-05 20:28:43,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:43,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-05 20:28:43,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-12-05 20:28:43,658 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:43,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 413 flow. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:43,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:43,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:43,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:43,995 INFO L130 PetriNetUnfolder]: 410/831 cut-off events. [2022-12-05 20:28:43,995 INFO L131 PetriNetUnfolder]: For 4226/4226 co-relation queries the response was YES. [2022-12-05 20:28:43,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 831 events. 410/831 cut-off events. For 4226/4226 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4205 event pairs, 80 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 4212. Up to 469 conditions per place. [2022-12-05 20:28:44,000 INFO L137 encePairwiseOnDemand]: 20/29 looper letters, 59 selfloop transitions, 12 changer transitions 12/84 dead transitions. [2022-12-05 20:28:44,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 813 flow [2022-12-05 20:28:44,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:28:44,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:28:44,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2022-12-05 20:28:44,001 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3054187192118227 [2022-12-05 20:28:44,001 INFO L175 Difference]: Start difference. First operand has 75 places, 50 transitions, 413 flow. Second operand 7 states and 62 transitions. [2022-12-05 20:28:44,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 813 flow [2022-12-05 20:28:44,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 84 transitions, 775 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-12-05 20:28:44,023 INFO L231 Difference]: Finished difference. Result has 76 places, 51 transitions, 442 flow [2022-12-05 20:28:44,023 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=76, PETRI_TRANSITIONS=51} [2022-12-05 20:28:44,023 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 38 predicate places. [2022-12-05 20:28:44,023 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 51 transitions, 442 flow [2022-12-05 20:28:44,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:44,024 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:44,039 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:44,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-05 20:28:44,040 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)] === [2022-12-05 20:28:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:44,040 INFO L85 PathProgramCache]: Analyzing trace with hash 956203258, now seen corresponding path program 6 times [2022-12-05 20:28:44,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:44,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727954856] [2022-12-05 20:28:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:44,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:45,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:45,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727954856] [2022-12-05 20:28:45,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727954856] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:45,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:45,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 20:28:45,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394882357] [2022-12-05 20:28:45,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:45,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 20:28:45,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:45,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 20:28:45,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-05 20:28:45,004 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:45,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 51 transitions, 442 flow. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:45,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:45,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:45,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:45,516 INFO L130 PetriNetUnfolder]: 469/951 cut-off events. [2022-12-05 20:28:45,516 INFO L131 PetriNetUnfolder]: For 5972/5973 co-relation queries the response was YES. [2022-12-05 20:28:45,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 951 events. 469/951 cut-off events. For 5972/5973 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4976 event pairs, 173 based on Foata normal form. 1/943 useless extension candidates. Maximal degree in co-relation 5060. Up to 561 conditions per place. [2022-12-05 20:28:45,520 INFO L137 encePairwiseOnDemand]: 17/29 looper letters, 53 selfloop transitions, 29 changer transitions 24/107 dead transitions. [2022-12-05 20:28:45,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 107 transitions, 1128 flow [2022-12-05 20:28:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 20:28:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 20:28:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 84 transitions. [2022-12-05 20:28:45,521 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2896551724137931 [2022-12-05 20:28:45,521 INFO L175 Difference]: Start difference. First operand has 76 places, 51 transitions, 442 flow. Second operand 10 states and 84 transitions. [2022-12-05 20:28:45,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 107 transitions, 1128 flow [2022-12-05 20:28:45,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 107 transitions, 1055 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-12-05 20:28:45,528 INFO L231 Difference]: Finished difference. Result has 83 places, 62 transitions, 616 flow [2022-12-05 20:28:45,528 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=616, PETRI_PLACES=83, PETRI_TRANSITIONS=62} [2022-12-05 20:28:45,529 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 45 predicate places. [2022-12-05 20:28:45,529 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 62 transitions, 616 flow [2022-12-05 20:28:45,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:45,529 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:45,529 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:45,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-05 20:28:45,529 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:28:45,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:45,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2125123098, now seen corresponding path program 7 times [2022-12-05 20:28:45,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:45,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950454881] [2022-12-05 20:28:45,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:45,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:46,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:46,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950454881] [2022-12-05 20:28:46,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950454881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:46,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:46,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 20:28:46,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039645938] [2022-12-05 20:28:46,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:46,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 20:28:46,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:46,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 20:28:46,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-05 20:28:46,274 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:46,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 62 transitions, 616 flow. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2022-12-05 20:28:46,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:46,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:46,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:46,596 INFO L130 PetriNetUnfolder]: 503/1018 cut-off events. [2022-12-05 20:28:46,596 INFO L131 PetriNetUnfolder]: For 6752/6753 co-relation queries the response was YES. [2022-12-05 20:28:46,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5863 conditions, 1018 events. 503/1018 cut-off events. For 6752/6753 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5460 event pairs, 200 based on Foata normal form. 1/1011 useless extension candidates. Maximal degree in co-relation 5827. Up to 714 conditions per place. [2022-12-05 20:28:46,601 INFO L137 encePairwiseOnDemand]: 22/29 looper letters, 61 selfloop transitions, 15 changer transitions 31/108 dead transitions. [2022-12-05 20:28:46,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 108 transitions, 1231 flow [2022-12-05 20:28:46,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:28:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:28:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2022-12-05 20:28:46,603 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3054187192118227 [2022-12-05 20:28:46,603 INFO L175 Difference]: Start difference. First operand has 83 places, 62 transitions, 616 flow. Second operand 7 states and 62 transitions. [2022-12-05 20:28:46,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 108 transitions, 1231 flow [2022-12-05 20:28:46,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 1139 flow, removed 21 selfloop flow, removed 7 redundant places. [2022-12-05 20:28:46,614 INFO L231 Difference]: Finished difference. Result has 85 places, 62 transitions, 592 flow [2022-12-05 20:28:46,614 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=592, PETRI_PLACES=85, PETRI_TRANSITIONS=62} [2022-12-05 20:28:46,614 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 47 predicate places. [2022-12-05 20:28:46,614 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 62 transitions, 592 flow [2022-12-05 20:28:46,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2022-12-05 20:28:46,614 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:46,614 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:46,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-05 20:28:46,615 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:28:46,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1991460132, now seen corresponding path program 8 times [2022-12-05 20:28:46,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:46,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557319873] [2022-12-05 20:28:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:46,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:47,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:47,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557319873] [2022-12-05 20:28:47,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557319873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:47,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:47,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 20:28:47,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606830136] [2022-12-05 20:28:47,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:47,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 20:28:47,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:47,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 20:28:47,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-05 20:28:47,710 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:47,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 62 transitions, 592 flow. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:47,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:47,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:47,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:48,119 INFO L130 PetriNetUnfolder]: 450/925 cut-off events. [2022-12-05 20:28:48,120 INFO L131 PetriNetUnfolder]: For 5967/5967 co-relation queries the response was YES. [2022-12-05 20:28:48,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5347 conditions, 925 events. 450/925 cut-off events. For 5967/5967 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4857 event pairs, 91 based on Foata normal form. 2/922 useless extension candidates. Maximal degree in co-relation 5318. Up to 351 conditions per place. [2022-12-05 20:28:48,123 INFO L137 encePairwiseOnDemand]: 22/29 looper letters, 28 selfloop transitions, 6 changer transitions 85/120 dead transitions. [2022-12-05 20:28:48,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 120 transitions, 1308 flow [2022-12-05 20:28:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 20:28:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 20:28:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 84 transitions. [2022-12-05 20:28:48,124 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2896551724137931 [2022-12-05 20:28:48,124 INFO L175 Difference]: Start difference. First operand has 85 places, 62 transitions, 592 flow. Second operand 10 states and 84 transitions. [2022-12-05 20:28:48,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 120 transitions, 1308 flow [2022-12-05 20:28:48,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 120 transitions, 1274 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-12-05 20:28:48,133 INFO L231 Difference]: Finished difference. Result has 89 places, 34 transitions, 297 flow [2022-12-05 20:28:48,133 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=297, PETRI_PLACES=89, PETRI_TRANSITIONS=34} [2022-12-05 20:28:48,133 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 51 predicate places. [2022-12-05 20:28:48,133 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 34 transitions, 297 flow [2022-12-05 20:28:48,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:48,134 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:48,134 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:48,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-05 20:28:48,134 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:28:48,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:48,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1972105156, now seen corresponding path program 9 times [2022-12-05 20:28:48,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:48,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114513226] [2022-12-05 20:28:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:48,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:48,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:48,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114513226] [2022-12-05 20:28:48,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114513226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:48,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:48,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 20:28:48,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937236415] [2022-12-05 20:28:48,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:48,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 20:28:48,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:48,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 20:28:48,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-05 20:28:48,688 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:48,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 34 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:48,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:48,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:48,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:48,847 INFO L130 PetriNetUnfolder]: 202/439 cut-off events. [2022-12-05 20:28:48,848 INFO L131 PetriNetUnfolder]: For 2645/2651 co-relation queries the response was YES. [2022-12-05 20:28:48,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2532 conditions, 439 events. 202/439 cut-off events. For 2645/2651 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1961 event pairs, 68 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 2507. Up to 174 conditions per place. [2022-12-05 20:28:48,850 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 29 selfloop transitions, 3 changer transitions 38/71 dead transitions. [2022-12-05 20:28:48,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 71 transitions, 719 flow [2022-12-05 20:28:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 20:28:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 20:28:48,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 54 transitions. [2022-12-05 20:28:48,851 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3103448275862069 [2022-12-05 20:28:48,851 INFO L175 Difference]: Start difference. First operand has 89 places, 34 transitions, 297 flow. Second operand 6 states and 54 transitions. [2022-12-05 20:28:48,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 71 transitions, 719 flow [2022-12-05 20:28:48,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 616 flow, removed 27 selfloop flow, removed 22 redundant places. [2022-12-05 20:28:48,856 INFO L231 Difference]: Finished difference. Result has 64 places, 30 transitions, 200 flow [2022-12-05 20:28:48,856 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=64, PETRI_TRANSITIONS=30} [2022-12-05 20:28:48,856 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2022-12-05 20:28:48,856 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 30 transitions, 200 flow [2022-12-05 20:28:48,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:48,856 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:28:48,856 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:28:48,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-05 20:28:48,857 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:28:48,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:28:48,857 INFO L85 PathProgramCache]: Analyzing trace with hash 120779176, now seen corresponding path program 10 times [2022-12-05 20:28:48,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:28:48,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314584041] [2022-12-05 20:28:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:28:48,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:28:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:28:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:28:50,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:28:50,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314584041] [2022-12-05 20:28:50,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314584041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:28:50,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:28:50,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 20:28:50,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375849142] [2022-12-05 20:28:50,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:28:50,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-05 20:28:50,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:28:50,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-05 20:28:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-05 20:28:50,177 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 29 [2022-12-05 20:28:50,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 30 transitions, 200 flow. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:50,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:28:50,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 29 [2022-12-05 20:28:50,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:28:50,281 INFO L130 PetriNetUnfolder]: 49/122 cut-off events. [2022-12-05 20:28:50,281 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-12-05 20:28:50,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 122 events. 49/122 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 289 event pairs, 23 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 606. Up to 55 conditions per place. [2022-12-05 20:28:50,282 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2022-12-05 20:28:50,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 32 transitions, 270 flow [2022-12-05 20:28:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 20:28:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 20:28:50,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2022-12-05 20:28:50,283 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.1839080459770115 [2022-12-05 20:28:50,283 INFO L175 Difference]: Start difference. First operand has 64 places, 30 transitions, 200 flow. Second operand 6 states and 32 transitions. [2022-12-05 20:28:50,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 32 transitions, 270 flow [2022-12-05 20:28:50,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 32 transitions, 244 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-12-05 20:28:50,284 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2022-12-05 20:28:50,285 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2022-12-05 20:28:50,285 INFO L294 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2022-12-05 20:28:50,285 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2022-12-05 20:28:50,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:28:50,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-05 20:28:50,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-05 20:28:50,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-05 20:28:50,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-05 20:28:50,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-12-05 20:28:50,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-05 20:28:50,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-05 20:28:50,292 INFO L458 BasicCegarLoop]: Path program histogram: [10, 3, 2, 1, 1, 1, 1, 1] [2022-12-05 20:28:50,296 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:28:50,296 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:28:50,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:28:50 BasicIcfg [2022-12-05 20:28:50,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:28:50,298 INFO L158 Benchmark]: Toolchain (without parser) took 29751.61ms. Allocated memory was 197.1MB in the beginning and 838.9MB in the end (delta: 641.7MB). Free memory was 172.8MB in the beginning and 369.7MB in the end (delta: -196.9MB). Peak memory consumption was 445.3MB. Max. memory is 8.0GB. [2022-12-05 20:28:50,298 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 197.1MB. Free memory is still 174.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:28:50,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.03ms. Allocated memory is still 197.1MB. Free memory was 172.3MB in the beginning and 141.3MB in the end (delta: 31.0MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-12-05 20:28:50,298 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.06ms. Allocated memory is still 197.1MB. Free memory was 141.3MB in the beginning and 138.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-12-05 20:28:50,299 INFO L158 Benchmark]: Boogie Preprocessor took 40.49ms. Allocated memory is still 197.1MB. Free memory was 138.2MB in the beginning and 135.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:28:50,299 INFO L158 Benchmark]: RCFGBuilder took 844.14ms. Allocated memory was 197.1MB in the beginning and 264.2MB in the end (delta: 67.1MB). Free memory was 135.6MB in the beginning and 227.1MB in the end (delta: -91.5MB). Peak memory consumption was 53.2MB. Max. memory is 8.0GB. [2022-12-05 20:28:50,299 INFO L158 Benchmark]: TraceAbstraction took 28240.28ms. Allocated memory was 264.2MB in the beginning and 838.9MB in the end (delta: 574.6MB). Free memory was 226.6MB in the beginning and 369.7MB in the end (delta: -143.1MB). Peak memory consumption was 431.0MB. Max. memory is 8.0GB. [2022-12-05 20:28:50,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 197.1MB. Free memory is still 174.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 551.03ms. Allocated memory is still 197.1MB. Free memory was 172.3MB in the beginning and 141.3MB in the end (delta: 31.0MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 68.06ms. Allocated memory is still 197.1MB. Free memory was 141.3MB in the beginning and 138.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.49ms. Allocated memory is still 197.1MB. Free memory was 138.2MB in the beginning and 135.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 844.14ms. Allocated memory was 197.1MB in the beginning and 264.2MB in the end (delta: 67.1MB). Free memory was 135.6MB in the beginning and 227.1MB in the end (delta: -91.5MB). Peak memory consumption was 53.2MB. Max. memory is 8.0GB. * TraceAbstraction took 28240.28ms. Allocated memory was 264.2MB in the beginning and 838.9MB in the end (delta: 574.6MB). Free memory was 226.6MB in the beginning and 369.7MB in the end (delta: -143.1MB). Peak memory consumption was 431.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 117 PlacesBefore, 38 PlacesAfterwards, 109 TransitionsBefore, 29 TransitionsAfterwards, 2202 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 39 TrivialYvCompositions, 42 ConcurrentYvCompositions, 1 ChoiceCompositions, 83 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1726, independent: 1659, independent conditional: 1659, independent unconditional: 0, dependent: 67, dependent conditional: 67, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1726, independent: 1659, independent conditional: 0, independent unconditional: 1659, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1726, independent: 1659, independent conditional: 0, independent unconditional: 1659, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1726, independent: 1659, independent conditional: 0, independent unconditional: 1659, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1342, independent: 1298, independent conditional: 0, independent unconditional: 1298, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1342, independent: 1265, independent conditional: 0, independent unconditional: 1265, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 77, independent: 33, independent conditional: 0, independent unconditional: 33, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 474, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 446, dependent conditional: 0, dependent unconditional: 446, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1726, independent: 361, independent conditional: 0, independent unconditional: 361, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 1342, unknown conditional: 0, unknown unconditional: 1342] , Statistics on independence cache: Total cache size (in pairs): 2105, Positive cache size: 2061, Positive conditional cache size: 0, Positive unconditional cache size: 2061, Negative cache size: 44, Negative conditional cache size: 0, Negative unconditional cache size: 44, 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: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 28.1s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 759 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 759 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 446 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3129 IncrementalHoareTripleChecker+Invalid, 3575 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 446 mSolverCounterUnsat, 1 mSDtfsCounter, 3129 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=616occurred in iteration=16, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 378 NumberOfCodeBlocks, 378 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 358 ConstructedInterpolants, 0 QuantifiedInterpolants, 3596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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! [2022-12-05 20:28:50,321 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...