/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:26:46,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:26:46,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:26:47,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:26:47,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:26:47,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:26:47,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:26:47,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:26:47,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:26:47,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:26:47,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:26:47,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:26:47,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:26:47,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:26:47,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:26:47,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:26:47,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:26:47,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:26:47,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:26:47,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:26:47,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:26:47,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:26:47,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:26:47,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:26:47,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 20:26:47,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 20:26:47,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 20:26:47,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 20:26:47,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 20:26:47,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 20:26:47,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 20:26:47,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 20:26:47,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 20:26:47,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 20:26:47,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 20:26:47,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 20:26:47,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 20:26:47,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 20:26:47,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:26:47,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:26:47,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:26:47,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-05 20:26:47,128 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:26:47,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:26:47,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:26:47,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:26:47,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:26:47,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:26:47,131 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:26:47,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:26:47,132 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:26:47,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:26:47,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:26:47,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:26:47,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:26:47,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:26:47,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:26:47,133 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:26:47,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:26:47,133 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:26:47,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:26:47,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:26:47,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:26:47,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:26:47,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:26:47,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:26:47,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:26:47,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:26:47,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:26:47,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:26:47,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:26:47,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:26:47,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:26:47,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:26:47,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:26:47,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:26:47,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:26:47,449 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:26:47,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 20:26:48,517 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:26:48,773 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:26:48,773 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 20:26:48,793 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8148aa344/1731edfa6256450daf679b456cce4408/FLAG2d716e210 [2022-12-05 20:26:48,811 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8148aa344/1731edfa6256450daf679b456cce4408 [2022-12-05 20:26:48,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:26:48,814 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:26:48,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:26:48,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:26:48,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:26:48,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:26:48" (1/1) ... [2022-12-05 20:26:48,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66458f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:48, skipping insertion in model container [2022-12-05 20:26:48,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:26:48" (1/1) ... [2022-12-05 20:26:48,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:26:48,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:26:49,042 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-05 20:26:49,175 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,176 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,176 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,178 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,182 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,182 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,182 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:26:49,209 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:26:49,227 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-05 20:26:49,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,258 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,258 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,258 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,258 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,258 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,272 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:49,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:49,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:26:49,323 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:26:49,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49 WrapperNode [2022-12-05 20:26:49,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:26:49,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:26:49,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:26:49,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:26:49,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49" (1/1) ... [2022-12-05 20:26:49,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49" (1/1) ... [2022-12-05 20:26:49,361 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2022-12-05 20:26:49,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:26:49,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:26:49,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:26:49,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:26:49,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49" (1/1) ... [2022-12-05 20:26:49,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49" (1/1) ... [2022-12-05 20:26:49,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49" (1/1) ... [2022-12-05 20:26:49,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49" (1/1) ... [2022-12-05 20:26:49,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49" (1/1) ... [2022-12-05 20:26:49,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49" (1/1) ... [2022-12-05 20:26:49,378 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49" (1/1) ... [2022-12-05 20:26:49,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49" (1/1) ... [2022-12-05 20:26:49,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:26:49,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:26:49,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:26:49,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:26:49,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49" (1/1) ... [2022-12-05 20:26:49,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:26:49,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:26:49,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 20:26:49,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 20:26:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:26:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 20:26:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:26:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:26:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:26:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-05 20:26:49,477 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-05 20:26:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-05 20:26:49,478 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-05 20:26:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-05 20:26:49,478 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-05 20:26:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-05 20:26:49,478 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-05 20:26:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:26:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 20:26:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:26:49,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:26:49,480 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:26:49,593 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:26:49,595 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:26:49,778 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:26:49,784 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:26:49,784 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 20:26:49,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:26:49 BoogieIcfgContainer [2022-12-05 20:26:49,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:26:49,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:26:49,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:26:49,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:26:49,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:26:48" (1/3) ... [2022-12-05 20:26:49,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a14bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:26:49, skipping insertion in model container [2022-12-05 20:26:49,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:49" (2/3) ... [2022-12-05 20:26:49,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a14bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:26:49, skipping insertion in model container [2022-12-05 20:26:49,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:26:49" (3/3) ... [2022-12-05 20:26:49,801 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 20:26:49,817 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:26:49,817 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 20:26:49,818 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:26:49,913 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 20:26:49,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 98 transitions, 216 flow [2022-12-05 20:26:50,023 INFO L130 PetriNetUnfolder]: 2/94 cut-off events. [2022-12-05 20:26:50,023 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:26:50,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-12-05 20:26:50,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 98 transitions, 216 flow [2022-12-05 20:26:50,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 80 transitions, 172 flow [2022-12-05 20:26:50,034 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:26:50,053 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 80 transitions, 172 flow [2022-12-05 20:26:50,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 80 transitions, 172 flow [2022-12-05 20:26:50,092 INFO L130 PetriNetUnfolder]: 1/80 cut-off events. [2022-12-05 20:26:50,092 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:26:50,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 1/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 43 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2022-12-05 20:26:50,096 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 80 transitions, 172 flow [2022-12-05 20:26:50,096 INFO L188 LiptonReduction]: Number of co-enabled transitions 1542 [2022-12-05 20:26:53,054 INFO L203 LiptonReduction]: Total number of compositions: 60 [2022-12-05 20:26:53,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:26:53,071 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@641b761a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:26:53,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 20:26:53,075 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-12-05 20:26:53,076 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:26:53,076 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:53,076 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:53,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:26:53,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:53,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1731683458, now seen corresponding path program 1 times [2022-12-05 20:26:53,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:53,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005475431] [2022-12-05 20:26:53,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:53,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:53,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:53,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005475431] [2022-12-05 20:26:53,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005475431] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:53,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:53,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:26:53,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567985740] [2022-12-05 20:26:53,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:53,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:26:53,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:53,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:26:53,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:26:53,561 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-05 20:26:53,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:53,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:53,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-05 20:26:53,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:53,873 INFO L130 PetriNetUnfolder]: 2019/2943 cut-off events. [2022-12-05 20:26:53,874 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-12-05 20:26:53,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 2943 events. 2019/2943 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13535 event pairs, 796 based on Foata normal form. 109/3052 useless extension candidates. Maximal degree in co-relation 6074. Up to 1819 conditions per place. [2022-12-05 20:26:53,892 INFO L137 encePairwiseOnDemand]: 12/21 looper letters, 30 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2022-12-05 20:26:53,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 169 flow [2022-12-05 20:26:53,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:26:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:26:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2022-12-05 20:26:53,902 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2022-12-05 20:26:53,903 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 40 transitions. [2022-12-05 20:26:53,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 169 flow [2022-12-05 20:26:53,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 20:26:53,911 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 102 flow [2022-12-05 20:26:53,913 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2022-12-05 20:26:53,916 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-12-05 20:26:53,916 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 102 flow [2022-12-05 20:26:53,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:53,916 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:53,916 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:53,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:26:53,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:26:53,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:53,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2142579882, now seen corresponding path program 1 times [2022-12-05 20:26:53,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:53,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555158763] [2022-12-05 20:26:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:53,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:54,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:54,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555158763] [2022-12-05 20:26:54,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555158763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:54,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:54,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:26:54,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714750075] [2022-12-05 20:26:54,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:54,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:26:54,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:54,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:26:54,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:26:54,088 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 21 [2022-12-05 20:26:54,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:54,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:54,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 21 [2022-12-05 20:26:54,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:54,317 INFO L130 PetriNetUnfolder]: 1755/2600 cut-off events. [2022-12-05 20:26:54,318 INFO L131 PetriNetUnfolder]: For 1267/1268 co-relation queries the response was YES. [2022-12-05 20:26:54,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7018 conditions, 2600 events. 1755/2600 cut-off events. For 1267/1268 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12084 event pairs, 439 based on Foata normal form. 21/2620 useless extension candidates. Maximal degree in co-relation 7006. Up to 2131 conditions per place. [2022-12-05 20:26:54,334 INFO L137 encePairwiseOnDemand]: 17/21 looper letters, 34 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2022-12-05 20:26:54,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 242 flow [2022-12-05 20:26:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:26:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:26:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2022-12-05 20:26:54,336 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2022-12-05 20:26:54,336 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 102 flow. Second operand 3 states and 33 transitions. [2022-12-05 20:26:54,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 242 flow [2022-12-05 20:26:54,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:26:54,344 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 129 flow [2022-12-05 20:26:54,344 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2022-12-05 20:26:54,345 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2022-12-05 20:26:54,345 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 129 flow [2022-12-05 20:26:54,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:54,346 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:54,346 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:54,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:26:54,346 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:26:54,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2142580688, now seen corresponding path program 1 times [2022-12-05 20:26:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:54,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573000032] [2022-12-05 20:26:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:54,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:54,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:54,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573000032] [2022-12-05 20:26:54,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573000032] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:54,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:54,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:26:54,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862297571] [2022-12-05 20:26:54,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:54,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:26:54,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:54,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:26:54,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:26:54,472 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2022-12-05 20:26:54,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:54,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:54,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2022-12-05 20:26:54,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:54,659 INFO L130 PetriNetUnfolder]: 1458/2248 cut-off events. [2022-12-05 20:26:54,659 INFO L131 PetriNetUnfolder]: For 982/997 co-relation queries the response was YES. [2022-12-05 20:26:54,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5953 conditions, 2248 events. 1458/2248 cut-off events. For 982/997 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11207 event pairs, 537 based on Foata normal form. 43/2266 useless extension candidates. Maximal degree in co-relation 5940. Up to 1729 conditions per place. [2022-12-05 20:26:54,672 INFO L137 encePairwiseOnDemand]: 18/21 looper letters, 39 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2022-12-05 20:26:54,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 281 flow [2022-12-05 20:26:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:26:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:26:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2022-12-05 20:26:54,675 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2022-12-05 20:26:54,675 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 129 flow. Second operand 3 states and 38 transitions. [2022-12-05 20:26:54,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 281 flow [2022-12-05 20:26:54,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:26:54,679 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 135 flow [2022-12-05 20:26:54,684 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2022-12-05 20:26:54,686 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2022-12-05 20:26:54,686 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 135 flow [2022-12-05 20:26:54,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:54,686 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:54,686 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:54,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:26:54,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:26:54,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:54,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1995467944, now seen corresponding path program 1 times [2022-12-05 20:26:54,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:54,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285084977] [2022-12-05 20:26:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:54,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:54,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:54,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285084977] [2022-12-05 20:26:54,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285084977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:54,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:54,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:26:54,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276542834] [2022-12-05 20:26:54,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:54,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:26:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:54,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:26:54,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:26:54,817 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-05 20:26:54,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 135 flow. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:54,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:54,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-05 20:26:54,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:55,125 INFO L130 PetriNetUnfolder]: 2482/3669 cut-off events. [2022-12-05 20:26:55,126 INFO L131 PetriNetUnfolder]: For 2019/2019 co-relation queries the response was YES. [2022-12-05 20:26:55,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10025 conditions, 3669 events. 2482/3669 cut-off events. For 2019/2019 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 17925 event pairs, 423 based on Foata normal form. 84/3753 useless extension candidates. Maximal degree in co-relation 10010. Up to 1564 conditions per place. [2022-12-05 20:26:55,142 INFO L137 encePairwiseOnDemand]: 13/21 looper letters, 45 selfloop transitions, 11 changer transitions 10/66 dead transitions. [2022-12-05 20:26:55,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 66 transitions, 393 flow [2022-12-05 20:26:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:26:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:26:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2022-12-05 20:26:55,143 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2022-12-05 20:26:55,144 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 135 flow. Second operand 5 states and 56 transitions. [2022-12-05 20:26:55,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 66 transitions, 393 flow [2022-12-05 20:26:55,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 66 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:26:55,146 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 193 flow [2022-12-05 20:26:55,146 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2022-12-05 20:26:55,147 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2022-12-05 20:26:55,147 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 193 flow [2022-12-05 20:26:55,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:55,147 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:55,147 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:55,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:26:55,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:26:55,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:55,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1995492124, now seen corresponding path program 2 times [2022-12-05 20:26:55,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:55,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724883035] [2022-12-05 20:26:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:55,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:55,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:55,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724883035] [2022-12-05 20:26:55,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724883035] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:55,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:55,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:26:55,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949421480] [2022-12-05 20:26:55,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:55,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:26:55,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:55,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:26:55,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:26:55,245 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-05 20:26:55,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 193 flow. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:55,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:55,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-05 20:26:55,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:55,398 INFO L130 PetriNetUnfolder]: 1297/1930 cut-off events. [2022-12-05 20:26:55,399 INFO L131 PetriNetUnfolder]: For 2432/2432 co-relation queries the response was YES. [2022-12-05 20:26:55,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 1930 events. 1297/1930 cut-off events. For 2432/2432 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8703 event pairs, 211 based on Foata normal form. 14/1944 useless extension candidates. Maximal degree in co-relation 6156. Up to 1038 conditions per place. [2022-12-05 20:26:55,410 INFO L137 encePairwiseOnDemand]: 13/21 looper letters, 39 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2022-12-05 20:26:55,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 371 flow [2022-12-05 20:26:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:26:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:26:55,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2022-12-05 20:26:55,411 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2022-12-05 20:26:55,411 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 193 flow. Second operand 4 states and 43 transitions. [2022-12-05 20:26:55,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 371 flow [2022-12-05 20:26:55,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 353 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-05 20:26:55,418 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 261 flow [2022-12-05 20:26:55,418 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2022-12-05 20:26:55,419 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2022-12-05 20:26:55,419 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 261 flow [2022-12-05 20:26:55,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:55,419 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:55,419 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:55,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:26:55,420 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:26:55,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:55,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1730623602, now seen corresponding path program 1 times [2022-12-05 20:26:55,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:55,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194600589] [2022-12-05 20:26:55,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:55,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:55,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:55,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194600589] [2022-12-05 20:26:55,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194600589] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:55,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:55,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:26:55,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765307939] [2022-12-05 20:26:55,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:55,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:26:55,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:55,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:26:55,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:26:55,532 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-05 20:26:55,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 261 flow. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:55,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:55,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-05 20:26:55,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:55,728 INFO L130 PetriNetUnfolder]: 1506/2281 cut-off events. [2022-12-05 20:26:55,728 INFO L131 PetriNetUnfolder]: For 4488/4488 co-relation queries the response was YES. [2022-12-05 20:26:55,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7756 conditions, 2281 events. 1506/2281 cut-off events. For 4488/4488 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10827 event pairs, 379 based on Foata normal form. 42/2323 useless extension candidates. Maximal degree in co-relation 7736. Up to 1106 conditions per place. [2022-12-05 20:26:55,746 INFO L137 encePairwiseOnDemand]: 14/21 looper letters, 40 selfloop transitions, 15 changer transitions 1/56 dead transitions. [2022-12-05 20:26:55,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 446 flow [2022-12-05 20:26:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:26:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:26:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2022-12-05 20:26:55,751 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2022-12-05 20:26:55,752 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 261 flow. Second operand 4 states and 45 transitions. [2022-12-05 20:26:55,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 446 flow [2022-12-05 20:26:55,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:26:55,760 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 335 flow [2022-12-05 20:26:55,760 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2022-12-05 20:26:55,762 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2022-12-05 20:26:55,762 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 335 flow [2022-12-05 20:26:55,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:55,763 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:55,763 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:55,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 20:26:55,763 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:26:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:55,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1730589967, now seen corresponding path program 1 times [2022-12-05 20:26:55,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:55,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430542523] [2022-12-05 20:26:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:55,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:55,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:55,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430542523] [2022-12-05 20:26:55,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430542523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:55,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:55,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:26:55,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719194601] [2022-12-05 20:26:55,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:55,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:26:55,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:55,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:26:55,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:26:55,856 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 21 [2022-12-05 20:26:55,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:55,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:55,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 21 [2022-12-05 20:26:55,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:56,093 INFO L130 PetriNetUnfolder]: 1766/2756 cut-off events. [2022-12-05 20:26:56,093 INFO L131 PetriNetUnfolder]: For 7731/7735 co-relation queries the response was YES. [2022-12-05 20:26:56,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9630 conditions, 2756 events. 1766/2756 cut-off events. For 7731/7735 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 14537 event pairs, 488 based on Foata normal form. 54/2789 useless extension candidates. Maximal degree in co-relation 9606. Up to 1398 conditions per place. [2022-12-05 20:26:56,107 INFO L137 encePairwiseOnDemand]: 16/21 looper letters, 42 selfloop transitions, 6 changer transitions 23/74 dead transitions. [2022-12-05 20:26:56,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 756 flow [2022-12-05 20:26:56,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:26:56,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:26:56,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2022-12-05 20:26:56,111 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2022-12-05 20:26:56,111 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 335 flow. Second operand 4 states and 48 transitions. [2022-12-05 20:26:56,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 756 flow [2022-12-05 20:26:56,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 74 transitions, 714 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-05 20:26:56,130 INFO L231 Difference]: Finished difference. Result has 53 places, 36 transitions, 331 flow [2022-12-05 20:26:56,130 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=331, PETRI_PLACES=53, PETRI_TRANSITIONS=36} [2022-12-05 20:26:56,130 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2022-12-05 20:26:56,130 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 36 transitions, 331 flow [2022-12-05 20:26:56,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:56,131 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:56,131 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:56,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 20:26:56,134 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:26:56,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2128076253, now seen corresponding path program 1 times [2022-12-05 20:26:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:56,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266322813] [2022-12-05 20:26:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:56,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:56,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:56,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266322813] [2022-12-05 20:26:56,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266322813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:56,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:56,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:26:56,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477829121] [2022-12-05 20:26:56,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:56,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:26:56,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:56,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:26:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:26:56,276 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2022-12-05 20:26:56,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 36 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:56,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:56,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2022-12-05 20:26:56,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:56,446 INFO L130 PetriNetUnfolder]: 823/1393 cut-off events. [2022-12-05 20:26:56,446 INFO L131 PetriNetUnfolder]: For 5377/5462 co-relation queries the response was YES. [2022-12-05 20:26:56,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4993 conditions, 1393 events. 823/1393 cut-off events. For 5377/5462 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7494 event pairs, 287 based on Foata normal form. 60/1417 useless extension candidates. Maximal degree in co-relation 4966. Up to 918 conditions per place. [2022-12-05 20:26:56,454 INFO L137 encePairwiseOnDemand]: 14/21 looper letters, 55 selfloop transitions, 9 changer transitions 19/91 dead transitions. [2022-12-05 20:26:56,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 91 transitions, 949 flow [2022-12-05 20:26:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:26:56,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:26:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2022-12-05 20:26:56,455 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2022-12-05 20:26:56,455 INFO L175 Difference]: Start difference. First operand has 53 places, 36 transitions, 331 flow. Second operand 5 states and 59 transitions. [2022-12-05 20:26:56,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 91 transitions, 949 flow [2022-12-05 20:26:56,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 913 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-05 20:26:56,466 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 384 flow [2022-12-05 20:26:56,466 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2022-12-05 20:26:56,466 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2022-12-05 20:26:56,467 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 384 flow [2022-12-05 20:26:56,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:56,467 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:56,467 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:56,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 20:26:56,467 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:26:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:56,468 INFO L85 PathProgramCache]: Analyzing trace with hash -87546109, now seen corresponding path program 1 times [2022-12-05 20:26:56,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:56,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162742653] [2022-12-05 20:26:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:56,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:56,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:56,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162742653] [2022-12-05 20:26:56,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162742653] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:56,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:56,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:26:56,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926728993] [2022-12-05 20:26:56,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:56,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:26:56,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:26:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:26:56,585 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2022-12-05 20:26:56,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:56,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:56,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2022-12-05 20:26:56,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:56,755 INFO L130 PetriNetUnfolder]: 774/1357 cut-off events. [2022-12-05 20:26:56,755 INFO L131 PetriNetUnfolder]: For 5819/6182 co-relation queries the response was YES. [2022-12-05 20:26:56,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6335 conditions, 1357 events. 774/1357 cut-off events. For 5819/6182 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7731 event pairs, 66 based on Foata normal form. 99/1434 useless extension candidates. Maximal degree in co-relation 6305. Up to 917 conditions per place. [2022-12-05 20:26:56,764 INFO L137 encePairwiseOnDemand]: 14/21 looper letters, 68 selfloop transitions, 17 changer transitions 28/121 dead transitions. [2022-12-05 20:26:56,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 121 transitions, 1318 flow [2022-12-05 20:26:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:26:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:26:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2022-12-05 20:26:56,766 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2022-12-05 20:26:56,766 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 384 flow. Second operand 7 states and 81 transitions. [2022-12-05 20:26:56,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 121 transitions, 1318 flow [2022-12-05 20:26:56,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 121 transitions, 1313 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:26:56,776 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 500 flow [2022-12-05 20:26:56,777 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=500, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2022-12-05 20:26:56,777 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2022-12-05 20:26:56,777 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 500 flow [2022-12-05 20:26:56,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:56,778 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:56,778 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:56,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 20:26:56,778 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:26:56,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:56,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1581061520, now seen corresponding path program 1 times [2022-12-05 20:26:56,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:56,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870261266] [2022-12-05 20:26:56,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:56,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:56,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:56,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870261266] [2022-12-05 20:26:56,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870261266] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:56,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:56,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:26:56,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593234904] [2022-12-05 20:26:56,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:56,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 20:26:56,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:56,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 20:26:56,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-05 20:26:56,942 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2022-12-05 20:26:56,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 500 flow. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:56,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:56,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2022-12-05 20:26:56,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:57,169 INFO L130 PetriNetUnfolder]: 672/1225 cut-off events. [2022-12-05 20:26:57,169 INFO L131 PetriNetUnfolder]: For 6731/7374 co-relation queries the response was YES. [2022-12-05 20:26:57,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7139 conditions, 1225 events. 672/1225 cut-off events. For 6731/7374 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7119 event pairs, 15 based on Foata normal form. 156/1363 useless extension candidates. Maximal degree in co-relation 7105. Up to 817 conditions per place. [2022-12-05 20:26:57,179 INFO L137 encePairwiseOnDemand]: 14/21 looper letters, 58 selfloop transitions, 13 changer transitions 64/141 dead transitions. [2022-12-05 20:26:57,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 141 transitions, 1648 flow [2022-12-05 20:26:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 20:26:57,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 20:26:57,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2022-12-05 20:26:57,181 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.544973544973545 [2022-12-05 20:26:57,181 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 500 flow. Second operand 9 states and 103 transitions. [2022-12-05 20:26:57,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 141 transitions, 1648 flow [2022-12-05 20:26:57,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 141 transitions, 1603 flow, removed 15 selfloop flow, removed 3 redundant places. [2022-12-05 20:26:57,206 INFO L231 Difference]: Finished difference. Result has 74 places, 45 transitions, 468 flow [2022-12-05 20:26:57,207 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=468, PETRI_PLACES=74, PETRI_TRANSITIONS=45} [2022-12-05 20:26:57,207 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2022-12-05 20:26:57,208 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 45 transitions, 468 flow [2022-12-05 20:26:57,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:57,208 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:57,208 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:57,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 20:26:57,208 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:26:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:57,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1792913342, now seen corresponding path program 1 times [2022-12-05 20:26:57,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:57,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769750527] [2022-12-05 20:26:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:57,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:57,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:57,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769750527] [2022-12-05 20:26:57,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769750527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:57,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:57,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:26:57,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315190228] [2022-12-05 20:26:57,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:57,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:26:57,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:57,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:26:57,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:26:57,334 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-05 20:26:57,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 45 transitions, 468 flow. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:57,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:57,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-05 20:26:57,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:57,455 INFO L130 PetriNetUnfolder]: 331/603 cut-off events. [2022-12-05 20:26:57,455 INFO L131 PetriNetUnfolder]: For 3975/3975 co-relation queries the response was YES. [2022-12-05 20:26:57,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3556 conditions, 603 events. 331/603 cut-off events. For 3975/3975 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2621 event pairs, 39 based on Foata normal form. 6/609 useless extension candidates. Maximal degree in co-relation 3519. Up to 293 conditions per place. [2022-12-05 20:26:57,459 INFO L137 encePairwiseOnDemand]: 13/21 looper letters, 48 selfloop transitions, 11 changer transitions 52/111 dead transitions. [2022-12-05 20:26:57,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 111 transitions, 1295 flow [2022-12-05 20:26:57,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 20:26:57,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 20:26:57,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2022-12-05 20:26:57,461 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2022-12-05 20:26:57,461 INFO L175 Difference]: Start difference. First operand has 74 places, 45 transitions, 468 flow. Second operand 6 states and 56 transitions. [2022-12-05 20:26:57,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 111 transitions, 1295 flow [2022-12-05 20:26:57,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 111 transitions, 983 flow, removed 105 selfloop flow, removed 9 redundant places. [2022-12-05 20:26:57,473 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 329 flow [2022-12-05 20:26:57,474 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=329, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2022-12-05 20:26:57,474 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2022-12-05 20:26:57,474 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 329 flow [2022-12-05 20:26:57,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:57,474 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:57,474 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:57,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 20:26:57,475 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:26:57,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:57,475 INFO L85 PathProgramCache]: Analyzing trace with hash 412638408, now seen corresponding path program 2 times [2022-12-05 20:26:57,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:57,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479923264] [2022-12-05 20:26:57,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:57,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:57,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479923264] [2022-12-05 20:26:57,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479923264] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:57,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:57,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 20:26:57,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724183122] [2022-12-05 20:26:57,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:57,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 20:26:57,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:57,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 20:26:57,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-05 20:26:57,612 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2022-12-05 20:26:57,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 329 flow. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:57,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:57,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2022-12-05 20:26:57,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:57,698 INFO L130 PetriNetUnfolder]: 145/297 cut-off events. [2022-12-05 20:26:57,698 INFO L131 PetriNetUnfolder]: For 1105/1204 co-relation queries the response was YES. [2022-12-05 20:26:57,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 297 events. 145/297 cut-off events. For 1105/1204 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1245 event pairs, 8 based on Foata normal form. 44/333 useless extension candidates. Maximal degree in co-relation 1383. Up to 95 conditions per place. [2022-12-05 20:26:57,700 INFO L137 encePairwiseOnDemand]: 14/21 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2022-12-05 20:26:57,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 679 flow [2022-12-05 20:26:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 20:26:57,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 20:26:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 65 transitions. [2022-12-05 20:26:57,701 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2022-12-05 20:26:57,701 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 329 flow. Second operand 8 states and 65 transitions. [2022-12-05 20:26:57,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 679 flow [2022-12-05 20:26:57,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 542 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-12-05 20:26:57,704 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2022-12-05 20:26:57,704 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2022-12-05 20:26:57,706 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2022-12-05 20:26:57,706 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2022-12-05 20:26:57,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:26:57,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-05 20:26:57,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-05 20:26:57,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-05 20:26:57,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-05 20:26:57,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-05 20:26:57,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 20:26:57,709 INFO L458 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:57,712 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:26:57,712 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:26:57,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:26:57 BasicIcfg [2022-12-05 20:26:57,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:26:57,716 INFO L158 Benchmark]: Toolchain (without parser) took 8902.89ms. Allocated memory was 207.6MB in the beginning and 314.6MB in the end (delta: 107.0MB). Free memory was 166.5MB in the beginning and 121.6MB in the end (delta: 44.9MB). Peak memory consumption was 152.9MB. Max. memory is 8.0GB. [2022-12-05 20:26:57,717 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory is still 184.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:26:57,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.30ms. Allocated memory is still 207.6MB. Free memory was 165.9MB in the beginning and 142.3MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-05 20:26:57,717 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.30ms. Allocated memory is still 207.6MB. Free memory was 142.3MB in the beginning and 140.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:26:57,717 INFO L158 Benchmark]: Boogie Preprocessor took 18.90ms. Allocated memory is still 207.6MB. Free memory was 140.3MB in the beginning and 138.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:26:57,717 INFO L158 Benchmark]: RCFGBuilder took 403.76ms. Allocated memory is still 207.6MB. Free memory was 138.7MB in the beginning and 124.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-05 20:26:57,718 INFO L158 Benchmark]: TraceAbstraction took 7928.62ms. Allocated memory was 207.6MB in the beginning and 314.6MB in the end (delta: 107.0MB). Free memory was 122.9MB in the beginning and 121.6MB in the end (delta: 1.4MB). Peak memory consumption was 108.8MB. Max. memory is 8.0GB. [2022-12-05 20:26:57,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory is still 184.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 508.30ms. Allocated memory is still 207.6MB. Free memory was 165.9MB in the beginning and 142.3MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.30ms. Allocated memory is still 207.6MB. Free memory was 142.3MB in the beginning and 140.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.90ms. Allocated memory is still 207.6MB. Free memory was 140.3MB in the beginning and 138.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 403.76ms. Allocated memory is still 207.6MB. Free memory was 138.7MB in the beginning and 124.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 7928.62ms. Allocated memory was 207.6MB in the beginning and 314.6MB in the end (delta: 107.0MB). Free memory was 122.9MB in the beginning and 121.6MB in the end (delta: 1.4MB). Peak memory consumption was 108.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 92 PlacesBefore, 33 PlacesAfterwards, 80 TransitionsBefore, 21 TransitionsAfterwards, 1542 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 40 ConcurrentYvCompositions, 0 ChoiceCompositions, 60 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1079, independent: 1042, independent conditional: 1042, independent unconditional: 0, dependent: 37, dependent conditional: 37, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1079, independent: 1042, independent conditional: 0, independent unconditional: 1042, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1079, independent: 1042, independent conditional: 0, independent unconditional: 1042, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1079, independent: 1042, independent conditional: 0, independent unconditional: 1042, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 937, independent: 906, independent conditional: 0, independent unconditional: 906, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 937, independent: 883, independent conditional: 0, independent unconditional: 883, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, independent: 23, independent conditional: 0, independent unconditional: 23, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 120, independent: 60, independent conditional: 0, independent unconditional: 60, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1079, independent: 136, independent conditional: 0, independent unconditional: 136, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 937, unknown conditional: 0, unknown unconditional: 937] , Statistics on independence cache: Total cache size (in pairs): 1482, Positive cache size: 1451, Positive conditional cache size: 0, Positive unconditional cache size: 1451, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 127 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 334 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 334 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 769 IncrementalHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 17 mSDtfsCounter, 769 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=500occurred in iteration=9, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 672 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 20:26:57,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...