/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 11:55:13,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:55:13,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:55:13,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:55:13,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:55:13,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:55:13,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:55:13,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:55:13,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:55:13,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:55:13,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:55:13,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:55:13,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:55:13,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:55:13,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:55:13,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:55:13,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:55:13,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:55:13,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:55:14,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:55:14,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:55:14,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:55:14,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:55:14,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:55:14,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:55:14,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:55:14,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:55:14,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:55:14,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:55:14,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:55:14,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:55:14,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:55:14,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:55:14,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:55:14,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:55:14,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:55:14,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:55:14,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:55:14,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:55:14,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:55:14,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:55:14,039 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2022-12-13 11:55:14,070 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:55:14,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:55:14,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:55:14,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:55:14,073 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:55:14,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:55:14,073 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:55:14,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:55:14,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:55:14,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:55:14,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:55:14,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:55:14,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:55:14,075 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:55:14,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:55:14,075 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:55:14,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:55:14,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:55:14,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:55:14,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 11:55:14,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:55:14,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:55:14,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:55:14,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:55:14,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:55:14,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:55:14,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:55:14,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 11:55:14,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 11:55:14,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:55:14,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:55:14,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:55:14,401 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:55:14,402 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:55:14,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-12-13 11:55:15,480 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:55:15,707 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:55:15,707 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-12-13 11:55:15,720 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a5cc8687/5495dafe8ce8455ea6ea6111a5925864/FLAG9b4733579 [2022-12-13 11:55:15,738 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a5cc8687/5495dafe8ce8455ea6ea6111a5925864 [2022-12-13 11:55:15,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:55:15,742 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 11:55:15,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:55:15,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:55:15,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:55:15,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:55:15" (1/1) ... [2022-12-13 11:55:15,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579fa85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:15, skipping insertion in model container [2022-12-13 11:55:15,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:55:15" (1/1) ... [2022-12-13 11:55:15,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:55:15,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:55:15,936 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/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2022-12-13 11:55:16,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,087 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,087 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,095 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,095 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:55:16,165 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:55:16,177 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/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2022-12-13 11:55:16,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,220 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,220 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,221 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,222 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,223 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,223 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,224 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,224 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,230 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,232 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,232 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:16,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:16,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:55:16,301 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:55:16,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16 WrapperNode [2022-12-13 11:55:16,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:55:16,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:55:16,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:55:16,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:55:16,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16" (1/1) ... [2022-12-13 11:55:16,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16" (1/1) ... [2022-12-13 11:55:16,381 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 165 [2022-12-13 11:55:16,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:55:16,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:55:16,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:55:16,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:55:16,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16" (1/1) ... [2022-12-13 11:55:16,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16" (1/1) ... [2022-12-13 11:55:16,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16" (1/1) ... [2022-12-13 11:55:16,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16" (1/1) ... [2022-12-13 11:55:16,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16" (1/1) ... [2022-12-13 11:55:16,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16" (1/1) ... [2022-12-13 11:55:16,422 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16" (1/1) ... [2022-12-13 11:55:16,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16" (1/1) ... [2022-12-13 11:55:16,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:55:16,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:55:16,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:55:16,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:55:16,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16" (1/1) ... [2022-12-13 11:55:16,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:55:16,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:55:16,474 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) [2022-12-13 11:55:16,476 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 [2022-12-13 11:55:16,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:55:16,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:55:16,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:55:16,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:55:16,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:55:16,516 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 11:55:16,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 11:55:16,516 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 11:55:16,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 11:55:16,516 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 11:55:16,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 11:55:16,516 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 11:55:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 11:55:16,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:55:16,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:55:16,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:55:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:55:16,519 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 11:55:16,703 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 11:55:16,707 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:55:16,965 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 11:55:17,114 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:55:17,114 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:55:17,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:55:17 BoogieIcfgContainer [2022-12-13 11:55:17,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:55:17,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:55:17,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:55:17,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:55:17,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:55:15" (1/3) ... [2022-12-13 11:55:17,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1722df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:55:17, skipping insertion in model container [2022-12-13 11:55:17,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:16" (2/3) ... [2022-12-13 11:55:17,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1722df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:55:17, skipping insertion in model container [2022-12-13 11:55:17,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:55:17" (3/3) ... [2022-12-13 11:55:17,125 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-12-13 11:55:17,143 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:55:17,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 11:55:17,144 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:55:17,203 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 11:55:17,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 278 flow [2022-12-13 11:55:17,332 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2022-12-13 11:55:17,332 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:55:17,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 11:55:17,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 129 transitions, 278 flow [2022-12-13 11:55:17,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 262 flow [2022-12-13 11:55:17,352 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:17,397 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 125 transitions, 262 flow [2022-12-13 11:55:17,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 125 transitions, 262 flow [2022-12-13 11:55:17,442 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2022-12-13 11:55:17,442 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:55:17,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 11:55:17,448 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 125 transitions, 262 flow [2022-12-13 11:55:17,448 INFO L226 LiptonReduction]: Number of co-enabled transitions 2936 [2022-12-13 11:55:27,587 INFO L241 LiptonReduction]: Total number of compositions: 100 [2022-12-13 11:55:27,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:55:27,606 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=REPEATED_LIPTON_PN, 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;@596e10da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 11:55:27,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 11:55:27,612 INFO L130 PetriNetUnfolder]: 0/25 cut-off events. [2022-12-13 11:55:27,613 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:55:27,613 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:27,614 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:27,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:27,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash -619695006, now seen corresponding path program 1 times [2022-12-13 11:55:27,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:27,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138012005] [2022-12-13 11:55:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:27,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:28,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:28,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138012005] [2022-12-13 11:55:28,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138012005] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:28,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:28,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:55:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597446403] [2022-12-13 11:55:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:28,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:55:28,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:28,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:55:28,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:55:28,113 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 67 [2022-12-13 11:55:28,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:28,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:28,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 67 [2022-12-13 11:55:28,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:34,022 INFO L130 PetriNetUnfolder]: 42055/62575 cut-off events. [2022-12-13 11:55:34,023 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-12-13 11:55:34,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118479 conditions, 62575 events. 42055/62575 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 3808. Compared 514099 event pairs, 5495 based on Foata normal form. 0/37016 useless extension candidates. Maximal degree in co-relation 118467. Up to 47761 conditions per place. [2022-12-13 11:55:34,243 INFO L137 encePairwiseOnDemand]: 61/67 looper letters, 36 selfloop transitions, 3 changer transitions 48/101 dead transitions. [2022-12-13 11:55:34,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 101 transitions, 388 flow [2022-12-13 11:55:34,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:55:34,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:55:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2022-12-13 11:55:34,257 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-13 11:55:34,258 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 146 flow. Second operand 3 states and 134 transitions. [2022-12-13 11:55:34,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 101 transitions, 388 flow [2022-12-13 11:55:34,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 384 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:55:34,269 INFO L231 Difference]: Finished difference. Result has 75 places, 40 transitions, 94 flow [2022-12-13 11:55:34,271 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=75, PETRI_TRANSITIONS=40} [2022-12-13 11:55:34,277 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -4 predicate places. [2022-12-13 11:55:34,277 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:34,278 INFO L89 Accepts]: Start accepts. Operand has 75 places, 40 transitions, 94 flow [2022-12-13 11:55:34,282 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:34,283 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:34,283 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 40 transitions, 94 flow [2022-12-13 11:55:34,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 40 transitions, 94 flow [2022-12-13 11:55:34,312 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2022-12-13 11:55:34,312 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:55:34,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 87 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2022-12-13 11:55:34,316 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 40 transitions, 94 flow [2022-12-13 11:55:34,316 INFO L226 LiptonReduction]: Number of co-enabled transitions 954 [2022-12-13 11:55:34,473 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:34,476 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 199 [2022-12-13 11:55:34,476 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 94 flow [2022-12-13 11:55:34,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:34,477 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:34,477 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:34,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:55:34,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:34,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:34,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1473692271, now seen corresponding path program 1 times [2022-12-13 11:55:34,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:34,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547936489] [2022-12-13 11:55:34,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:34,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:34,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:34,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547936489] [2022-12-13 11:55:34,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547936489] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:34,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:34,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:34,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942883564] [2022-12-13 11:55:34,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:34,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:55:34,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:34,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:55:34,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:55:34,971 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2022-12-13 11:55:34,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-12-13 11:55:34,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:34,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2022-12-13 11:55:34,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:37,135 INFO L130 PetriNetUnfolder]: 20650/29427 cut-off events. [2022-12-13 11:55:37,135 INFO L131 PetriNetUnfolder]: For 375/375 co-relation queries the response was YES. [2022-12-13 11:55:37,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58574 conditions, 29427 events. 20650/29427 cut-off events. For 375/375 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 177753 event pairs, 5154 based on Foata normal form. 1080/24676 useless extension candidates. Maximal degree in co-relation 58564. Up to 14039 conditions per place. [2022-12-13 11:55:37,403 INFO L137 encePairwiseOnDemand]: 29/40 looper letters, 54 selfloop transitions, 10 changer transitions 1/74 dead transitions. [2022-12-13 11:55:37,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 292 flow [2022-12-13 11:55:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2022-12-13 11:55:37,406 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.64375 [2022-12-13 11:55:37,406 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 94 flow. Second operand 4 states and 103 transitions. [2022-12-13 11:55:37,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 292 flow [2022-12-13 11:55:37,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 74 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:55:37,426 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 162 flow [2022-12-13 11:55:37,427 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2022-12-13 11:55:37,427 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -24 predicate places. [2022-12-13 11:55:37,428 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:37,428 INFO L89 Accepts]: Start accepts. Operand has 55 places, 47 transitions, 162 flow [2022-12-13 11:55:37,429 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:37,430 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:37,430 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 47 transitions, 162 flow [2022-12-13 11:55:37,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 47 transitions, 162 flow [2022-12-13 11:55:37,553 INFO L130 PetriNetUnfolder]: 534/1332 cut-off events. [2022-12-13 11:55:37,553 INFO L131 PetriNetUnfolder]: For 185/250 co-relation queries the response was YES. [2022-12-13 11:55:37,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2577 conditions, 1332 events. 534/1332 cut-off events. For 185/250 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10397 event pairs, 225 based on Foata normal form. 0/952 useless extension candidates. Maximal degree in co-relation 2567. Up to 596 conditions per place. [2022-12-13 11:55:37,570 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 47 transitions, 162 flow [2022-12-13 11:55:37,570 INFO L226 LiptonReduction]: Number of co-enabled transitions 1086 [2022-12-13 11:55:37,589 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:37,590 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 162 [2022-12-13 11:55:37,590 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 162 flow [2022-12-13 11:55:37,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-12-13 11:55:37,591 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:37,591 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:37,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:55:37,591 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:37,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:37,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1120637574, now seen corresponding path program 1 times [2022-12-13 11:55:37,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:37,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571439131] [2022-12-13 11:55:37,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:37,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:37,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:37,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571439131] [2022-12-13 11:55:37,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571439131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:37,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:37,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:37,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691010212] [2022-12-13 11:55:37,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:37,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:55:37,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:37,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:55:37,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:55:37,959 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2022-12-13 11:55:37,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-12-13 11:55:37,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:37,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2022-12-13 11:55:37,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:39,950 INFO L130 PetriNetUnfolder]: 21477/30872 cut-off events. [2022-12-13 11:55:39,950 INFO L131 PetriNetUnfolder]: For 14755/14755 co-relation queries the response was YES. [2022-12-13 11:55:40,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77749 conditions, 30872 events. 21477/30872 cut-off events. For 14755/14755 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 195222 event pairs, 2270 based on Foata normal form. 50/25248 useless extension candidates. Maximal degree in co-relation 77736. Up to 17973 conditions per place. [2022-12-13 11:55:40,153 INFO L137 encePairwiseOnDemand]: 27/39 looper letters, 64 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2022-12-13 11:55:40,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 94 transitions, 494 flow [2022-12-13 11:55:40,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:40,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2022-12-13 11:55:40,157 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2022-12-13 11:55:40,158 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 162 flow. Second operand 4 states and 109 transitions. [2022-12-13 11:55:40,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 94 transitions, 494 flow [2022-12-13 11:55:40,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 94 transitions, 490 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:55:40,173 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 353 flow [2022-12-13 11:55:40,173 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2022-12-13 11:55:40,175 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -20 predicate places. [2022-12-13 11:55:40,175 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:40,175 INFO L89 Accepts]: Start accepts. Operand has 59 places, 64 transitions, 353 flow [2022-12-13 11:55:40,178 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:40,178 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:40,179 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 64 transitions, 353 flow [2022-12-13 11:55:40,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 64 transitions, 353 flow [2022-12-13 11:55:40,303 INFO L130 PetriNetUnfolder]: 682/1629 cut-off events. [2022-12-13 11:55:40,303 INFO L131 PetriNetUnfolder]: For 1383/1473 co-relation queries the response was YES. [2022-12-13 11:55:40,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4437 conditions, 1629 events. 682/1629 cut-off events. For 1383/1473 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12671 event pairs, 254 based on Foata normal form. 0/1201 useless extension candidates. Maximal degree in co-relation 4423. Up to 681 conditions per place. [2022-12-13 11:55:40,324 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 64 transitions, 353 flow [2022-12-13 11:55:40,324 INFO L226 LiptonReduction]: Number of co-enabled transitions 1448 [2022-12-13 11:55:40,357 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:40,358 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 183 [2022-12-13 11:55:40,358 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 353 flow [2022-12-13 11:55:40,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-12-13 11:55:40,359 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:40,359 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:40,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:55:40,359 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:40,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash -380028149, now seen corresponding path program 1 times [2022-12-13 11:55:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:40,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429396157] [2022-12-13 11:55:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:40,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:40,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:40,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429396157] [2022-12-13 11:55:40,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429396157] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:40,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:40,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:55:40,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390119052] [2022-12-13 11:55:40,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:40,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:55:40,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:40,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:55:40,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:55:40,566 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2022-12-13 11:55:40,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-12-13 11:55:40,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:40,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2022-12-13 11:55:40,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:42,641 INFO L130 PetriNetUnfolder]: 15222/22635 cut-off events. [2022-12-13 11:55:42,641 INFO L131 PetriNetUnfolder]: For 37268/37512 co-relation queries the response was YES. [2022-12-13 11:55:42,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69825 conditions, 22635 events. 15222/22635 cut-off events. For 37268/37512 co-relation queries the response was YES. Maximal size of possible extension queue 1088. Compared 153176 event pairs, 5770 based on Foata normal form. 164/17623 useless extension candidates. Maximal degree in co-relation 69808. Up to 19286 conditions per place. [2022-12-13 11:55:42,788 INFO L137 encePairwiseOnDemand]: 35/39 looper letters, 60 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2022-12-13 11:55:42,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 581 flow [2022-12-13 11:55:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:55:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:55:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2022-12-13 11:55:42,790 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7264957264957265 [2022-12-13 11:55:42,790 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 353 flow. Second operand 3 states and 85 transitions. [2022-12-13 11:55:42,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 581 flow [2022-12-13 11:55:42,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 581 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:55:42,797 INFO L231 Difference]: Finished difference. Result has 62 places, 69 transitions, 421 flow [2022-12-13 11:55:42,798 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=421, PETRI_PLACES=62, PETRI_TRANSITIONS=69} [2022-12-13 11:55:42,799 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -17 predicate places. [2022-12-13 11:55:42,799 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:42,799 INFO L89 Accepts]: Start accepts. Operand has 62 places, 69 transitions, 421 flow [2022-12-13 11:55:42,801 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:42,801 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:42,801 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 69 transitions, 421 flow [2022-12-13 11:55:42,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 69 transitions, 421 flow [2022-12-13 11:55:42,924 INFO L130 PetriNetUnfolder]: 678/1620 cut-off events. [2022-12-13 11:55:42,925 INFO L131 PetriNetUnfolder]: For 1885/2006 co-relation queries the response was YES. [2022-12-13 11:55:42,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 1620 events. 678/1620 cut-off events. For 1885/2006 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12630 event pairs, 286 based on Foata normal form. 2/1195 useless extension candidates. Maximal degree in co-relation 4665. Up to 670 conditions per place. [2022-12-13 11:55:42,938 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 69 transitions, 421 flow [2022-12-13 11:55:42,938 INFO L226 LiptonReduction]: Number of co-enabled transitions 1544 [2022-12-13 11:55:42,946 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:42,947 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 148 [2022-12-13 11:55:42,948 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 69 transitions, 421 flow [2022-12-13 11:55:42,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-12-13 11:55:42,948 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:42,948 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:42,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:55:42,948 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:42,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:42,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1978071735, now seen corresponding path program 1 times [2022-12-13 11:55:42,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:42,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560928153] [2022-12-13 11:55:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:42,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:43,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:43,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560928153] [2022-12-13 11:55:43,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560928153] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:43,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:43,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:43,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348861477] [2022-12-13 11:55:43,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:43,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:55:43,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:43,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:55:43,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:55:43,093 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2022-12-13 11:55:43,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 69 transitions, 421 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2022-12-13 11:55:43,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:43,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2022-12-13 11:55:43,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:45,430 INFO L130 PetriNetUnfolder]: 20765/31190 cut-off events. [2022-12-13 11:55:45,430 INFO L131 PetriNetUnfolder]: For 58108/58520 co-relation queries the response was YES. [2022-12-13 11:55:45,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95519 conditions, 31190 events. 20765/31190 cut-off events. For 58108/58520 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 226716 event pairs, 8582 based on Foata normal form. 635/23958 useless extension candidates. Maximal degree in co-relation 95499. Up to 14939 conditions per place. [2022-12-13 11:55:45,588 INFO L137 encePairwiseOnDemand]: 36/39 looper letters, 65 selfloop transitions, 10 changer transitions 3/98 dead transitions. [2022-12-13 11:55:45,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 717 flow [2022-12-13 11:55:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:55:45,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:55:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2022-12-13 11:55:45,589 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7435897435897436 [2022-12-13 11:55:45,590 INFO L175 Difference]: Start difference. First operand has 62 places, 69 transitions, 421 flow. Second operand 3 states and 87 transitions. [2022-12-13 11:55:45,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 717 flow [2022-12-13 11:55:45,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 98 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:55:45,595 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 427 flow [2022-12-13 11:55:45,596 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=427, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2022-12-13 11:55:45,596 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -15 predicate places. [2022-12-13 11:55:45,596 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:45,596 INFO L89 Accepts]: Start accepts. Operand has 64 places, 67 transitions, 427 flow [2022-12-13 11:55:45,597 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:45,597 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:45,598 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 67 transitions, 427 flow [2022-12-13 11:55:45,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 67 transitions, 427 flow [2022-12-13 11:55:45,713 INFO L130 PetriNetUnfolder]: 729/1916 cut-off events. [2022-12-13 11:55:45,714 INFO L131 PetriNetUnfolder]: For 3023/3162 co-relation queries the response was YES. [2022-12-13 11:55:45,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5495 conditions, 1916 events. 729/1916 cut-off events. For 3023/3162 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 16347 event pairs, 339 based on Foata normal form. 0/1380 useless extension candidates. Maximal degree in co-relation 5477. Up to 788 conditions per place. [2022-12-13 11:55:45,727 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 67 transitions, 427 flow [2022-12-13 11:55:45,727 INFO L226 LiptonReduction]: Number of co-enabled transitions 1492 [2022-12-13 11:55:45,738 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:45,739 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 143 [2022-12-13 11:55:45,739 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 427 flow [2022-12-13 11:55:45,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2022-12-13 11:55:45,740 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:45,740 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:45,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:55:45,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:45,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1297565841, now seen corresponding path program 1 times [2022-12-13 11:55:45,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:45,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418353156] [2022-12-13 11:55:45,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:45,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:45,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:45,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418353156] [2022-12-13 11:55:45,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418353156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:45,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:45,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:45,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043371999] [2022-12-13 11:55:45,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:45,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:55:45,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:45,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:55:45,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:55:45,910 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2022-12-13 11:55:45,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:45,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:45,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2022-12-13 11:55:45,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:48,784 INFO L130 PetriNetUnfolder]: 27012/40485 cut-off events. [2022-12-13 11:55:48,785 INFO L131 PetriNetUnfolder]: For 73163/73799 co-relation queries the response was YES. [2022-12-13 11:55:48,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120992 conditions, 40485 events. 27012/40485 cut-off events. For 73163/73799 co-relation queries the response was YES. Maximal size of possible extension queue 2047. Compared 304366 event pairs, 10262 based on Foata normal form. 617/29938 useless extension candidates. Maximal degree in co-relation 120971. Up to 19299 conditions per place. [2022-12-13 11:55:48,992 INFO L137 encePairwiseOnDemand]: 36/39 looper letters, 61 selfloop transitions, 7 changer transitions 2/91 dead transitions. [2022-12-13 11:55:48,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 91 transitions, 671 flow [2022-12-13 11:55:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:55:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:55:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2022-12-13 11:55:48,994 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7264957264957265 [2022-12-13 11:55:48,994 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 427 flow. Second operand 3 states and 85 transitions. [2022-12-13 11:55:48,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 91 transitions, 671 flow [2022-12-13 11:55:49,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 659 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 11:55:49,007 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 430 flow [2022-12-13 11:55:49,007 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2022-12-13 11:55:49,008 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -13 predicate places. [2022-12-13 11:55:49,008 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:49,008 INFO L89 Accepts]: Start accepts. Operand has 66 places, 66 transitions, 430 flow [2022-12-13 11:55:49,009 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:49,009 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:49,010 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 66 transitions, 430 flow [2022-12-13 11:55:49,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 66 transitions, 430 flow [2022-12-13 11:55:49,232 INFO L130 PetriNetUnfolder]: 696/1954 cut-off events. [2022-12-13 11:55:49,233 INFO L131 PetriNetUnfolder]: For 3122/3245 co-relation queries the response was YES. [2022-12-13 11:55:49,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5643 conditions, 1954 events. 696/1954 cut-off events. For 3122/3245 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 17558 event pairs, 370 based on Foata normal form. 0/1392 useless extension candidates. Maximal degree in co-relation 5624. Up to 831 conditions per place. [2022-12-13 11:55:49,248 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 66 transitions, 430 flow [2022-12-13 11:55:49,248 INFO L226 LiptonReduction]: Number of co-enabled transitions 1452 [2022-12-13 11:55:49,260 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:49,261 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 253 [2022-12-13 11:55:49,261 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 430 flow [2022-12-13 11:55:49,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:49,261 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:49,261 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:49,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:55:49,262 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:49,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:49,262 INFO L85 PathProgramCache]: Analyzing trace with hash 482933080, now seen corresponding path program 1 times [2022-12-13 11:55:49,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:49,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302567720] [2022-12-13 11:55:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:49,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:49,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:49,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302567720] [2022-12-13 11:55:49,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302567720] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:49,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:49,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:55:49,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571963061] [2022-12-13 11:55:49,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:49,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:55:49,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:49,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:55:49,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:55:49,916 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2022-12-13 11:55:49,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2022-12-13 11:55:49,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:49,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2022-12-13 11:55:49,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:53,342 INFO L130 PetriNetUnfolder]: 34240/50194 cut-off events. [2022-12-13 11:55:53,343 INFO L131 PetriNetUnfolder]: For 90227/90227 co-relation queries the response was YES. [2022-12-13 11:55:53,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152307 conditions, 50194 events. 34240/50194 cut-off events. For 90227/90227 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 347307 event pairs, 3761 based on Foata normal form. 80/39212 useless extension candidates. Maximal degree in co-relation 152285. Up to 28258 conditions per place. [2022-12-13 11:55:53,611 INFO L137 encePairwiseOnDemand]: 26/39 looper letters, 96 selfloop transitions, 36 changer transitions 7/148 dead transitions. [2022-12-13 11:55:53,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 148 transitions, 1252 flow [2022-12-13 11:55:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:55:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:55:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2022-12-13 11:55:53,613 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-13 11:55:53,613 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 430 flow. Second operand 5 states and 130 transitions. [2022-12-13 11:55:53,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 148 transitions, 1252 flow [2022-12-13 11:55:53,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 148 transitions, 1236 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:55:53,662 INFO L231 Difference]: Finished difference. Result has 73 places, 94 transitions, 843 flow [2022-12-13 11:55:53,662 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=843, PETRI_PLACES=73, PETRI_TRANSITIONS=94} [2022-12-13 11:55:53,663 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2022-12-13 11:55:53,663 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:53,663 INFO L89 Accepts]: Start accepts. Operand has 73 places, 94 transitions, 843 flow [2022-12-13 11:55:53,664 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:53,664 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:53,664 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 94 transitions, 843 flow [2022-12-13 11:55:53,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 94 transitions, 843 flow [2022-12-13 11:55:53,845 INFO L130 PetriNetUnfolder]: 964/2532 cut-off events. [2022-12-13 11:55:53,845 INFO L131 PetriNetUnfolder]: For 5453/5697 co-relation queries the response was YES. [2022-12-13 11:55:53,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9193 conditions, 2532 events. 964/2532 cut-off events. For 5453/5697 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 22663 event pairs, 329 based on Foata normal form. 2/1866 useless extension candidates. Maximal degree in co-relation 9169. Up to 1086 conditions per place. [2022-12-13 11:55:54,003 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 94 transitions, 843 flow [2022-12-13 11:55:54,003 INFO L226 LiptonReduction]: Number of co-enabled transitions 1908 [2022-12-13 11:55:54,016 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:54,017 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 354 [2022-12-13 11:55:54,017 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 94 transitions, 843 flow [2022-12-13 11:55:54,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2022-12-13 11:55:54,017 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:54,017 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:54,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:55:54,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:54,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:54,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2073095582, now seen corresponding path program 1 times [2022-12-13 11:55:54,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:54,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311162380] [2022-12-13 11:55:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:54,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:54,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:54,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311162380] [2022-12-13 11:55:54,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311162380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:54,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:54,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:55:54,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332706537] [2022-12-13 11:55:54,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:54,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:55:54,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:54,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:55:54,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:55:54,375 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2022-12-13 11:55:54,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 94 transitions, 843 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 11:55:54,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:54,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2022-12-13 11:55:54,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:57,699 INFO L130 PetriNetUnfolder]: 27923/42575 cut-off events. [2022-12-13 11:55:57,700 INFO L131 PetriNetUnfolder]: For 126018/126780 co-relation queries the response was YES. [2022-12-13 11:55:57,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152228 conditions, 42575 events. 27923/42575 cut-off events. For 126018/126780 co-relation queries the response was YES. Maximal size of possible extension queue 2202. Compared 320844 event pairs, 4702 based on Foata normal form. 366/32129 useless extension candidates. Maximal degree in co-relation 152201. Up to 32366 conditions per place. [2022-12-13 11:55:57,897 INFO L137 encePairwiseOnDemand]: 32/39 looper letters, 96 selfloop transitions, 23 changer transitions 0/151 dead transitions. [2022-12-13 11:55:57,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 151 transitions, 1501 flow [2022-12-13 11:55:57,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:55:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:55:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2022-12-13 11:55:57,898 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6512820512820513 [2022-12-13 11:55:57,898 INFO L175 Difference]: Start difference. First operand has 73 places, 94 transitions, 843 flow. Second operand 5 states and 127 transitions. [2022-12-13 11:55:57,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 151 transitions, 1501 flow [2022-12-13 11:55:57,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 151 transitions, 1501 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:55:57,961 INFO L231 Difference]: Finished difference. Result has 79 places, 110 transitions, 1104 flow [2022-12-13 11:55:57,962 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1104, PETRI_PLACES=79, PETRI_TRANSITIONS=110} [2022-12-13 11:55:57,962 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 0 predicate places. [2022-12-13 11:55:57,962 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:57,962 INFO L89 Accepts]: Start accepts. Operand has 79 places, 110 transitions, 1104 flow [2022-12-13 11:55:57,963 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:57,963 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:57,964 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 110 transitions, 1104 flow [2022-12-13 11:55:57,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 110 transitions, 1104 flow [2022-12-13 11:55:58,158 INFO L130 PetriNetUnfolder]: 1122/2765 cut-off events. [2022-12-13 11:55:58,159 INFO L131 PetriNetUnfolder]: For 8497/8811 co-relation queries the response was YES. [2022-12-13 11:55:58,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11761 conditions, 2765 events. 1122/2765 cut-off events. For 8497/8811 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 24051 event pairs, 311 based on Foata normal form. 9/2107 useless extension candidates. Maximal degree in co-relation 11733. Up to 1271 conditions per place. [2022-12-13 11:55:58,183 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 110 transitions, 1104 flow [2022-12-13 11:55:58,184 INFO L226 LiptonReduction]: Number of co-enabled transitions 2170 [2022-12-13 11:55:58,302 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [370] L781-->L784: Formula: (= v_~z~0_1 1) InVars {} OutVars{~z~0=v_~z~0_1} AuxVars[] AssignedVars[~z~0] and [434] L855-->L862: Formula: (let ((.cse3 (not (= (mod v_~z$w_buff0_used~0_155 256) 0))) (.cse4 (not (= (mod v_~z$r_buff1_thd0~0_80 256) 0))) (.cse5 (not (= (mod v_~z$r_buff0_thd0~0_86 256) 0)))) (let ((.cse0 (and .cse5 (not (= (mod v_~z$w_buff0_used~0_156 256) 0)))) (.cse1 (and .cse4 (not (= 0 (mod v_~z$w_buff1_used~0_137 256))))) (.cse2 (and .cse3 .cse5))) (and (= v_~z$w_buff0_used~0_155 (ite .cse0 0 v_~z$w_buff0_used~0_156)) (= v_~z$w_buff1_used~0_136 (ite (or .cse1 .cse2) 0 v_~z$w_buff1_used~0_137)) (not (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_19| 0)) (= (ite (or (and (not (= (mod v_~z$r_buff0_thd0~0_85 256) 0)) .cse3) (and (not (= (mod v_~z$w_buff1_used~0_136 256) 0)) .cse4)) 0 v_~z$r_buff1_thd0~0_80) v_~z$r_buff1_thd0~0_79) (= (ite .cse0 v_~z$w_buff0~0_90 (ite .cse1 v_~z$w_buff1~0_71 v_~z~0_113)) v_~z~0_112) (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_19| |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_11|) (= v_~z$r_buff0_thd0~0_85 (ite .cse2 0 v_~z$r_buff0_thd0~0_86))))) InVars {~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_86, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_156, ~z$w_buff0~0=v_~z$w_buff0~0_90, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_80, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_137, ~z$w_buff1~0=v_~z$w_buff1~0_71, ~z~0=v_~z~0_113, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_11|} OutVars{~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_85, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_155, ~z$w_buff0~0=v_~z$w_buff0~0_90, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_79, ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_19|, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_136, ~z$w_buff1~0=v_~z$w_buff1~0_71, ~z~0=v_~z~0_112, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~z$r_buff0_thd0~0, ~z$w_buff0_used~0, ~z$r_buff1_thd0~0, ULTIMATE.start_assume_abort_if_not_~cond#1, ~z$w_buff1_used~0, ~z~0] [2022-12-13 11:55:58,372 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [370] L781-->L784: Formula: (= v_~z~0_1 1) InVars {} OutVars{~z~0=v_~z~0_1} AuxVars[] AssignedVars[~z~0] and [446] $Ultimate##0-->L814: Formula: (and (= v_~z$w_buff0_used~0_179 v_~z$w_buff1_used~0_157) (= v_~z$r_buff0_thd4~0_63 v_~z$r_buff1_thd4~0_39) (= v_~z$r_buff0_thd0~0_100 v_~z$r_buff1_thd0~0_93) (= v_~a~0_6 1) (= |v_P3Thread1of1ForFork2_~arg#1.base_17| |v_P3Thread1of1ForFork2_#in~arg#1.base_17|) (= v_~z$r_buff0_thd2~0_21 v_~z$r_buff1_thd2~0_19) (= v_~z$w_buff0_used~0_178 1) (= v_~z$w_buff0~0_106 2) (= |v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_19| (ite (not (and (not (= 0 (mod v_~z$w_buff0_used~0_178 256))) (not (= (mod v_~z$w_buff1_used~0_157 256) 0)))) 1 0)) (= v_~z$r_buff0_thd1~0_21 v_~z$r_buff1_thd1~0_21) (= v_~z$w_buff0~0_107 v_~z$w_buff1~0_84) (= v_~z$r_buff0_thd3~0_47 v_~z$r_buff1_thd3~0_44) (not (= |v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_19| 0)) (= |v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_19| |v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_19|) (= v_~z$r_buff0_thd4~0_62 1) (= |v_P3Thread1of1ForFork2_~arg#1.offset_17| |v_P3Thread1of1ForFork2_#in~arg#1.offset_17|)) InVars {~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_100, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_179, ~z$w_buff0~0=v_~z$w_buff0~0_107, P3Thread1of1ForFork2_#in~arg#1.offset=|v_P3Thread1of1ForFork2_#in~arg#1.offset_17|, P3Thread1of1ForFork2_#in~arg#1.base=|v_P3Thread1of1ForFork2_#in~arg#1.base_17|, ~z$r_buff0_thd4~0=v_~z$r_buff0_thd4~0_63, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_47, ~z$r_buff0_thd1~0=v_~z$r_buff0_thd1~0_21, ~z$r_buff0_thd2~0=v_~z$r_buff0_thd2~0_21} OutVars{~z$r_buff1_thd4~0=v_~z$r_buff1_thd4~0_39, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_178, ~z$w_buff0~0=v_~z$w_buff0~0_106, ~z$r_buff1_thd3~0=v_~z$r_buff1_thd3~0_44, P3Thread1of1ForFork2_#in~arg#1.offset=|v_P3Thread1of1ForFork2_#in~arg#1.offset_17|, ~z$r_buff1_thd2~0=v_~z$r_buff1_thd2~0_19, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_157, ~z$w_buff1~0=v_~z$w_buff1~0_84, P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1=|v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_19|, ~a~0=v_~a~0_6, P3Thread1of1ForFork2___VERIFIER_assert_~expression#1=|v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_19|, ~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_100, P3Thread1of1ForFork2_~arg#1.offset=|v_P3Thread1of1ForFork2_~arg#1.offset_17|, P3Thread1of1ForFork2_~arg#1.base=|v_P3Thread1of1ForFork2_~arg#1.base_17|, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_93, ~z$r_buff1_thd1~0=v_~z$r_buff1_thd1~0_21, P3Thread1of1ForFork2_#in~arg#1.base=|v_P3Thread1of1ForFork2_#in~arg#1.base_17|, ~z$r_buff0_thd4~0=v_~z$r_buff0_thd4~0_62, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_47, ~z$r_buff0_thd1~0=v_~z$r_buff0_thd1~0_21, ~z$r_buff0_thd2~0=v_~z$r_buff0_thd2~0_21} AuxVars[] AssignedVars[~z$r_buff1_thd4~0, ~z$w_buff0_used~0, ~z$w_buff0~0, ~z$r_buff1_thd3~0, ~z$r_buff1_thd2~0, ~z$w_buff1_used~0, ~z$w_buff1~0, P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1, ~a~0, P3Thread1of1ForFork2___VERIFIER_assert_~expression#1, P3Thread1of1ForFork2_~arg#1.offset, P3Thread1of1ForFork2_~arg#1.base, ~z$r_buff1_thd0~0, ~z$r_buff1_thd1~0, ~z$r_buff0_thd4~0] [2022-12-13 11:55:58,488 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [370] L781-->L784: Formula: (= v_~z~0_1 1) InVars {} OutVars{~z~0=v_~z~0_1} AuxVars[] AssignedVars[~z~0] and [446] $Ultimate##0-->L814: Formula: (and (= v_~z$w_buff0_used~0_179 v_~z$w_buff1_used~0_157) (= v_~z$r_buff0_thd4~0_63 v_~z$r_buff1_thd4~0_39) (= v_~z$r_buff0_thd0~0_100 v_~z$r_buff1_thd0~0_93) (= v_~a~0_6 1) (= |v_P3Thread1of1ForFork2_~arg#1.base_17| |v_P3Thread1of1ForFork2_#in~arg#1.base_17|) (= v_~z$r_buff0_thd2~0_21 v_~z$r_buff1_thd2~0_19) (= v_~z$w_buff0_used~0_178 1) (= v_~z$w_buff0~0_106 2) (= |v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_19| (ite (not (and (not (= 0 (mod v_~z$w_buff0_used~0_178 256))) (not (= (mod v_~z$w_buff1_used~0_157 256) 0)))) 1 0)) (= v_~z$r_buff0_thd1~0_21 v_~z$r_buff1_thd1~0_21) (= v_~z$w_buff0~0_107 v_~z$w_buff1~0_84) (= v_~z$r_buff0_thd3~0_47 v_~z$r_buff1_thd3~0_44) (not (= |v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_19| 0)) (= |v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_19| |v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_19|) (= v_~z$r_buff0_thd4~0_62 1) (= |v_P3Thread1of1ForFork2_~arg#1.offset_17| |v_P3Thread1of1ForFork2_#in~arg#1.offset_17|)) InVars {~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_100, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_179, ~z$w_buff0~0=v_~z$w_buff0~0_107, P3Thread1of1ForFork2_#in~arg#1.offset=|v_P3Thread1of1ForFork2_#in~arg#1.offset_17|, P3Thread1of1ForFork2_#in~arg#1.base=|v_P3Thread1of1ForFork2_#in~arg#1.base_17|, ~z$r_buff0_thd4~0=v_~z$r_buff0_thd4~0_63, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_47, ~z$r_buff0_thd1~0=v_~z$r_buff0_thd1~0_21, ~z$r_buff0_thd2~0=v_~z$r_buff0_thd2~0_21} OutVars{~z$r_buff1_thd4~0=v_~z$r_buff1_thd4~0_39, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_178, ~z$w_buff0~0=v_~z$w_buff0~0_106, ~z$r_buff1_thd3~0=v_~z$r_buff1_thd3~0_44, P3Thread1of1ForFork2_#in~arg#1.offset=|v_P3Thread1of1ForFork2_#in~arg#1.offset_17|, ~z$r_buff1_thd2~0=v_~z$r_buff1_thd2~0_19, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_157, ~z$w_buff1~0=v_~z$w_buff1~0_84, P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1=|v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_19|, ~a~0=v_~a~0_6, P3Thread1of1ForFork2___VERIFIER_assert_~expression#1=|v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_19|, ~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_100, P3Thread1of1ForFork2_~arg#1.offset=|v_P3Thread1of1ForFork2_~arg#1.offset_17|, P3Thread1of1ForFork2_~arg#1.base=|v_P3Thread1of1ForFork2_~arg#1.base_17|, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_93, ~z$r_buff1_thd1~0=v_~z$r_buff1_thd1~0_21, P3Thread1of1ForFork2_#in~arg#1.base=|v_P3Thread1of1ForFork2_#in~arg#1.base_17|, ~z$r_buff0_thd4~0=v_~z$r_buff0_thd4~0_62, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_47, ~z$r_buff0_thd1~0=v_~z$r_buff0_thd1~0_21, ~z$r_buff0_thd2~0=v_~z$r_buff0_thd2~0_21} AuxVars[] AssignedVars[~z$r_buff1_thd4~0, ~z$w_buff0_used~0, ~z$w_buff0~0, ~z$r_buff1_thd3~0, ~z$r_buff1_thd2~0, ~z$w_buff1_used~0, ~z$w_buff1~0, P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1, ~a~0, P3Thread1of1ForFork2___VERIFIER_assert_~expression#1, P3Thread1of1ForFork2_~arg#1.offset, P3Thread1of1ForFork2_~arg#1.base, ~z$r_buff1_thd0~0, ~z$r_buff1_thd1~0, ~z$r_buff0_thd4~0] [2022-12-13 11:55:58,615 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [370] L781-->L784: Formula: (= v_~z~0_1 1) InVars {} OutVars{~z~0=v_~z~0_1} AuxVars[] AssignedVars[~z~0] and [434] L855-->L862: Formula: (let ((.cse3 (not (= (mod v_~z$w_buff0_used~0_155 256) 0))) (.cse4 (not (= (mod v_~z$r_buff1_thd0~0_80 256) 0))) (.cse5 (not (= (mod v_~z$r_buff0_thd0~0_86 256) 0)))) (let ((.cse0 (and .cse5 (not (= (mod v_~z$w_buff0_used~0_156 256) 0)))) (.cse1 (and .cse4 (not (= 0 (mod v_~z$w_buff1_used~0_137 256))))) (.cse2 (and .cse3 .cse5))) (and (= v_~z$w_buff0_used~0_155 (ite .cse0 0 v_~z$w_buff0_used~0_156)) (= v_~z$w_buff1_used~0_136 (ite (or .cse1 .cse2) 0 v_~z$w_buff1_used~0_137)) (not (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_19| 0)) (= (ite (or (and (not (= (mod v_~z$r_buff0_thd0~0_85 256) 0)) .cse3) (and (not (= (mod v_~z$w_buff1_used~0_136 256) 0)) .cse4)) 0 v_~z$r_buff1_thd0~0_80) v_~z$r_buff1_thd0~0_79) (= (ite .cse0 v_~z$w_buff0~0_90 (ite .cse1 v_~z$w_buff1~0_71 v_~z~0_113)) v_~z~0_112) (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_19| |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_11|) (= v_~z$r_buff0_thd0~0_85 (ite .cse2 0 v_~z$r_buff0_thd0~0_86))))) InVars {~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_86, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_156, ~z$w_buff0~0=v_~z$w_buff0~0_90, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_80, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_137, ~z$w_buff1~0=v_~z$w_buff1~0_71, ~z~0=v_~z~0_113, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_11|} OutVars{~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_85, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_155, ~z$w_buff0~0=v_~z$w_buff0~0_90, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_79, ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_19|, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_136, ~z$w_buff1~0=v_~z$w_buff1~0_71, ~z~0=v_~z~0_112, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~z$r_buff0_thd0~0, ~z$w_buff0_used~0, ~z$r_buff1_thd0~0, ULTIMATE.start_assume_abort_if_not_~cond#1, ~z$w_buff1_used~0, ~z~0] [2022-12-13 11:55:58,706 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:55:58,707 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 745 [2022-12-13 11:55:58,707 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 110 transitions, 1130 flow [2022-12-13 11:55:58,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 11:55:58,707 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:58,707 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:58,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:55:58,707 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:58,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:58,708 INFO L85 PathProgramCache]: Analyzing trace with hash 486009985, now seen corresponding path program 1 times [2022-12-13 11:55:58,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:58,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791298505] [2022-12-13 11:55:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:58,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:59,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:59,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:59,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791298505] [2022-12-13 11:55:59,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791298505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:59,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:59,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:55:59,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615761017] [2022-12-13 11:55:59,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:59,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:55:59,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:59,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:55:59,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:55:59,179 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2022-12-13 11:55:59,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 110 transitions, 1130 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2022-12-13 11:55:59,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:59,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2022-12-13 11:55:59,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:03,194 INFO L130 PetriNetUnfolder]: 31203/47424 cut-off events. [2022-12-13 11:56:03,194 INFO L131 PetriNetUnfolder]: For 210893/213597 co-relation queries the response was YES. [2022-12-13 11:56:03,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186589 conditions, 47424 events. 31203/47424 cut-off events. For 210893/213597 co-relation queries the response was YES. Maximal size of possible extension queue 2961. Compared 367553 event pairs, 4742 based on Foata normal form. 1691/37065 useless extension candidates. Maximal degree in co-relation 186558. Up to 29267 conditions per place. [2022-12-13 11:56:03,501 INFO L137 encePairwiseOnDemand]: 36/45 looper letters, 109 selfloop transitions, 29 changer transitions 2/172 dead transitions. [2022-12-13 11:56:03,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 172 transitions, 1860 flow [2022-12-13 11:56:03,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:56:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:56:03,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2022-12-13 11:56:03,503 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2022-12-13 11:56:03,503 INFO L175 Difference]: Start difference. First operand has 79 places, 110 transitions, 1130 flow. Second operand 6 states and 160 transitions. [2022-12-13 11:56:03,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 172 transitions, 1860 flow [2022-12-13 11:56:03,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 172 transitions, 1839 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 11:56:03,692 INFO L231 Difference]: Finished difference. Result has 84 places, 115 transitions, 1264 flow [2022-12-13 11:56:03,692 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1264, PETRI_PLACES=84, PETRI_TRANSITIONS=115} [2022-12-13 11:56:03,693 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2022-12-13 11:56:03,693 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:56:03,693 INFO L89 Accepts]: Start accepts. Operand has 84 places, 115 transitions, 1264 flow [2022-12-13 11:56:03,694 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:56:03,694 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:56:03,694 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 115 transitions, 1264 flow [2022-12-13 11:56:03,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 115 transitions, 1264 flow [2022-12-13 11:56:03,904 INFO L130 PetriNetUnfolder]: 1168/2984 cut-off events. [2022-12-13 11:56:03,904 INFO L131 PetriNetUnfolder]: For 11310/11862 co-relation queries the response was YES. [2022-12-13 11:56:03,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13142 conditions, 2984 events. 1168/2984 cut-off events. For 11310/11862 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 27547 event pairs, 394 based on Foata normal form. 10/2240 useless extension candidates. Maximal degree in co-relation 13112. Up to 1330 conditions per place. [2022-12-13 11:56:03,933 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 115 transitions, 1264 flow [2022-12-13 11:56:03,933 INFO L226 LiptonReduction]: Number of co-enabled transitions 2278 [2022-12-13 11:56:03,943 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:56:03,944 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 251 [2022-12-13 11:56:03,944 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 115 transitions, 1264 flow [2022-12-13 11:56:03,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2022-12-13 11:56:03,945 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:03,945 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:03,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:56:03,945 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:56:03,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2078423118, now seen corresponding path program 1 times [2022-12-13 11:56:03,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:03,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724649934] [2022-12-13 11:56:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:03,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:04,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:04,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724649934] [2022-12-13 11:56:04,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724649934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:56:04,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:56:04,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:56:04,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700078877] [2022-12-13 11:56:04,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:56:04,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:56:04,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:04,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:56:04,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:56:04,693 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2022-12-13 11:56:04,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 115 transitions, 1264 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 11:56:04,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:04,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2022-12-13 11:56:04,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:09,756 INFO L130 PetriNetUnfolder]: 34382/52856 cut-off events. [2022-12-13 11:56:09,757 INFO L131 PetriNetUnfolder]: For 277037/279785 co-relation queries the response was YES. [2022-12-13 11:56:09,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218092 conditions, 52856 events. 34382/52856 cut-off events. For 277037/279785 co-relation queries the response was YES. Maximal size of possible extension queue 3429. Compared 423746 event pairs, 5657 based on Foata normal form. 1572/41295 useless extension candidates. Maximal degree in co-relation 218059. Up to 25439 conditions per place. [2022-12-13 11:56:10,084 INFO L137 encePairwiseOnDemand]: 37/45 looper letters, 113 selfloop transitions, 45 changer transitions 0/190 dead transitions. [2022-12-13 11:56:10,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 190 transitions, 2264 flow [2022-12-13 11:56:10,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:56:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:56:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2022-12-13 11:56:10,086 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6177777777777778 [2022-12-13 11:56:10,086 INFO L175 Difference]: Start difference. First operand has 84 places, 115 transitions, 1264 flow. Second operand 5 states and 139 transitions. [2022-12-13 11:56:10,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 190 transitions, 2264 flow [2022-12-13 11:56:10,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 190 transitions, 2213 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:56:10,307 INFO L231 Difference]: Finished difference. Result has 86 places, 131 transitions, 1612 flow [2022-12-13 11:56:10,307 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1612, PETRI_PLACES=86, PETRI_TRANSITIONS=131} [2022-12-13 11:56:10,308 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2022-12-13 11:56:10,308 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:56:10,308 INFO L89 Accepts]: Start accepts. Operand has 86 places, 131 transitions, 1612 flow [2022-12-13 11:56:10,309 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:56:10,309 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:56:10,309 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 131 transitions, 1612 flow [2022-12-13 11:56:10,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 131 transitions, 1612 flow [2022-12-13 11:56:10,656 INFO L130 PetriNetUnfolder]: 1414/3682 cut-off events. [2022-12-13 11:56:10,657 INFO L131 PetriNetUnfolder]: For 17926/18454 co-relation queries the response was YES. [2022-12-13 11:56:10,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17343 conditions, 3682 events. 1414/3682 cut-off events. For 17926/18454 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 35882 event pairs, 410 based on Foata normal form. 9/2762 useless extension candidates. Maximal degree in co-relation 17311. Up to 1634 conditions per place. [2022-12-13 11:56:10,693 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 131 transitions, 1612 flow [2022-12-13 11:56:10,693 INFO L226 LiptonReduction]: Number of co-enabled transitions 2592 [2022-12-13 11:56:10,707 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:56:10,708 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 400 [2022-12-13 11:56:10,708 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 131 transitions, 1612 flow [2022-12-13 11:56:10,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 11:56:10,708 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:10,708 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:10,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:56:10,708 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:56:10,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:10,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2113563418, now seen corresponding path program 2 times [2022-12-13 11:56:10,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:10,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416848166] [2022-12-13 11:56:10,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:10,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:11,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:11,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416848166] [2022-12-13 11:56:11,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416848166] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:56:11,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:56:11,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:56:11,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726278674] [2022-12-13 11:56:11,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:56:11,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:56:11,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:11,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:56:11,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:56:11,466 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2022-12-13 11:56:11,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 131 transitions, 1612 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2022-12-13 11:56:11,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:11,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2022-12-13 11:56:11,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:17,184 INFO L130 PetriNetUnfolder]: 41242/63302 cut-off events. [2022-12-13 11:56:17,184 INFO L131 PetriNetUnfolder]: For 420402/423953 co-relation queries the response was YES. [2022-12-13 11:56:17,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279720 conditions, 63302 events. 41242/63302 cut-off events. For 420402/423953 co-relation queries the response was YES. Maximal size of possible extension queue 4327. Compared 521179 event pairs, 6131 based on Foata normal form. 1754/48691 useless extension candidates. Maximal degree in co-relation 279685. Up to 37381 conditions per place. [2022-12-13 11:56:17,592 INFO L137 encePairwiseOnDemand]: 36/45 looper letters, 129 selfloop transitions, 53 changer transitions 0/214 dead transitions. [2022-12-13 11:56:17,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 214 transitions, 2807 flow [2022-12-13 11:56:17,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:56:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:56:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2022-12-13 11:56:17,594 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2022-12-13 11:56:17,594 INFO L175 Difference]: Start difference. First operand has 86 places, 131 transitions, 1612 flow. Second operand 6 states and 159 transitions. [2022-12-13 11:56:17,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 214 transitions, 2807 flow [2022-12-13 11:56:18,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 214 transitions, 2747 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-13 11:56:18,570 INFO L231 Difference]: Finished difference. Result has 91 places, 151 transitions, 2067 flow [2022-12-13 11:56:18,570 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2067, PETRI_PLACES=91, PETRI_TRANSITIONS=151} [2022-12-13 11:56:18,570 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2022-12-13 11:56:18,571 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:56:18,571 INFO L89 Accepts]: Start accepts. Operand has 91 places, 151 transitions, 2067 flow [2022-12-13 11:56:18,572 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:56:18,572 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:56:18,572 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 151 transitions, 2067 flow [2022-12-13 11:56:18,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 151 transitions, 2067 flow [2022-12-13 11:56:18,895 INFO L130 PetriNetUnfolder]: 1684/4574 cut-off events. [2022-12-13 11:56:18,895 INFO L131 PetriNetUnfolder]: For 23419/23945 co-relation queries the response was YES. [2022-12-13 11:56:18,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21941 conditions, 4574 events. 1684/4574 cut-off events. For 23419/23945 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 47644 event pairs, 530 based on Foata normal form. 9/3382 useless extension candidates. Maximal degree in co-relation 21907. Up to 1975 conditions per place. [2022-12-13 11:56:18,951 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 151 transitions, 2067 flow [2022-12-13 11:56:18,951 INFO L226 LiptonReduction]: Number of co-enabled transitions 2980 [2022-12-13 11:56:18,963 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:56:18,964 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 393 [2022-12-13 11:56:18,964 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 151 transitions, 2067 flow [2022-12-13 11:56:18,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2022-12-13 11:56:18,964 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:18,964 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:18,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:56:18,964 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:56:18,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:18,965 INFO L85 PathProgramCache]: Analyzing trace with hash -90357297, now seen corresponding path program 1 times [2022-12-13 11:56:18,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:18,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359675179] [2022-12-13 11:56:18,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:18,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:19,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:19,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359675179] [2022-12-13 11:56:19,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359675179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:56:19,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:56:19,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:56:19,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992540034] [2022-12-13 11:56:19,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:56:19,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:56:19,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:19,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:56:19,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:56:19,091 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2022-12-13 11:56:19,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 151 transitions, 2067 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2022-12-13 11:56:19,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:19,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2022-12-13 11:56:19,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand