/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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 23:41:42,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 23:41:42,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 23:41:42,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 23:41:42,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 23:41:42,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 23:41:42,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 23:41:42,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 23:41:42,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 23:41:42,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 23:41:42,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 23:41:42,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 23:41:42,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 23:41:42,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 23:41:42,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 23:41:42,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 23:41:42,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 23:41:42,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 23:41:42,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 23:41:42,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 23:41:42,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 23:41:42,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 23:41:42,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 23:41:42,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 23:41:42,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 23:41:42,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 23:41:42,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 23:41:42,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 23:41:42,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 23:41:42,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 23:41:42,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 23:41:42,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 23:41:42,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 23:41:42,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 23:41:42,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 23:41:42,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 23:41:42,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 23:41:42,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 23:41:42,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 23:41:42,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 23:41:42,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 23:41:42,094 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-NoLbe.epf [2022-12-11 23:41:42,118 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 23:41:42,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 23:41:42,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 23:41:42,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 23:41:42,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 23:41:42,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 23:41:42,122 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 23:41:42,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 23:41:42,122 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 23:41:42,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 23:41:42,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 23:41:42,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 23:41:42,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 23:41:42,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 23:41:42,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 23:41:42,123 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 23:41:42,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 23:41:42,123 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 23:41:42,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 23:41:42,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 23:41:42,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 23:41:42,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 23:41:42,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 23:41:42,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:41:42,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 23:41:42,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 23:41:42,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 23:41:42,124 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 23:41:42,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 23:41:42,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 23:41:42,124 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 23:41:42,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-11 23:41:42,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 23:41:42,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 23:41:42,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 23:41:42,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 23:41:42,449 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 23:41:42,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.i [2022-12-11 23:41:43,487 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 23:41:43,735 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 23:41:43,735 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.i [2022-12-11 23:41:43,743 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865bbb3cf/b5f32c59f98d44288c3953739c5da5c5/FLAG8dae516c4 [2022-12-11 23:41:44,058 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865bbb3cf/b5f32c59f98d44288c3953739c5da5c5 [2022-12-11 23:41:44,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 23:41:44,061 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 23:41:44,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 23:41:44,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 23:41:44,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 23:41:44,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da08b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44, skipping insertion in model container [2022-12-11 23:41:44,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 23:41:44,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 23:41:44,199 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/safe008_tso.i[945,958] [2022-12-11 23:41:44,320 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,322 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,322 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,322 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,336 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:41:44,343 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 23:41:44,353 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/safe008_tso.i[945,958] [2022-12-11 23:41:44,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:41:44,388 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:41:44,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:41:44,421 INFO L208 MainTranslator]: Completed translation [2022-12-11 23:41:44,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44 WrapperNode [2022-12-11 23:41:44,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 23:41:44,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 23:41:44,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 23:41:44,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 23:41:44,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,467 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-11 23:41:44,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 23:41:44,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 23:41:44,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 23:41:44,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 23:41:44,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,497 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 23:41:44,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 23:41:44,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 23:41:44,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 23:41:44,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44" (1/1) ... [2022-12-11 23:41:44,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:41:44,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:41:44,565 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) [2022-12-11 23:41:44,571 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 [2022-12-11 23:41:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 23:41:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 23:41:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 23:41:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 23:41:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 23:41:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-11 23:41:44,595 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-11 23:41:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-11 23:41:44,595 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-11 23:41:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-11 23:41:44,596 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-11 23:41:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 23:41:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 23:41:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 23:41:44,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 23:41:44,597 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 23:41:44,681 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 23:41:44,682 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 23:41:44,821 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 23:41:44,825 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 23:41:44,826 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-11 23:41:44,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:41:44 BoogieIcfgContainer [2022-12-11 23:41:44,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 23:41:44,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 23:41:44,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 23:41:44,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 23:41:44,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 11:41:44" (1/3) ... [2022-12-11 23:41:44,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adbe3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:41:44, skipping insertion in model container [2022-12-11 23:41:44,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:41:44" (2/3) ... [2022-12-11 23:41:44,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adbe3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:41:44, skipping insertion in model container [2022-12-11 23:41:44,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:41:44" (3/3) ... [2022-12-11 23:41:44,832 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_tso.i [2022-12-11 23:41:44,850 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 23:41:44,850 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 23:41:44,850 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 23:41:44,922 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 23:41:44,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-11 23:41:45,015 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-11 23:41:45,015 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 23:41:45,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-11 23:41:45,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-11 23:41:45,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-11 23:41:45,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 23:41:45,032 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;@43ce1d4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 23:41:45,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 23:41:45,046 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2022-12-11 23:41:45,047 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 23:41:45,047 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:41:45,048 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:41:45,048 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 1 more)] === [2022-12-11 23:41:45,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:41:45,052 INFO L85 PathProgramCache]: Analyzing trace with hash -944742546, now seen corresponding path program 1 times [2022-12-11 23:41:45,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:41:45,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67170393] [2022-12-11 23:41:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:41:45,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:41:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:41:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:41:45,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:41:45,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67170393] [2022-12-11 23:41:45,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67170393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:41:45,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:41:45,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:41:45,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797138757] [2022-12-11 23:41:45,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:41:45,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:41:45,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:41:45,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:41:45,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:41:45,755 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2022-12-11 23:41:45,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 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) [2022-12-11 23:41:45,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:41:45,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2022-12-11 23:41:45,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:41:46,052 INFO L130 PetriNetUnfolder]: 129/462 cut-off events. [2022-12-11 23:41:46,052 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-11 23:41:46,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 462 events. 129/462 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2484 event pairs, 14 based on Foata normal form. 20/468 useless extension candidates. Maximal degree in co-relation 696. Up to 78 conditions per place. [2022-12-11 23:41:46,059 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 21 selfloop transitions, 4 changer transitions 35/113 dead transitions. [2022-12-11 23:41:46,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 358 flow [2022-12-11 23:41:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 23:41:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 23:41:46,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 911 transitions. [2022-12-11 23:41:46,071 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8244343891402715 [2022-12-11 23:41:46,078 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2022-12-11 23:41:46,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 113 transitions, 358 flow [2022-12-11 23:41:46,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 78 transitions, 218 flow [2022-12-11 23:41:46,081 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 218 flow [2022-12-11 23:41:46,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 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) [2022-12-11 23:41:46,082 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:41:46,082 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:41:46,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 23:41:46,082 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 1 more)] === [2022-12-11 23:41:46,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:41:46,083 INFO L85 PathProgramCache]: Analyzing trace with hash 685784397, now seen corresponding path program 1 times [2022-12-11 23:41:46,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:41:46,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393668297] [2022-12-11 23:41:46,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:41:46,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:41:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:41:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:41:46,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:41:46,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393668297] [2022-12-11 23:41:46,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393668297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:41:46,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:41:46,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:41:46,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622684897] [2022-12-11 23:41:46,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:41:46,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:41:46,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:41:46,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:41:46,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:41:46,230 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2022-12-11 23:41:46,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 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) [2022-12-11 23:41:46,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:41:46,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2022-12-11 23:41:46,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:41:46,384 INFO L130 PetriNetUnfolder]: 59/291 cut-off events. [2022-12-11 23:41:46,385 INFO L131 PetriNetUnfolder]: For 33/131 co-relation queries the response was YES. [2022-12-11 23:41:46,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 291 events. 59/291 cut-off events. For 33/131 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1309 event pairs, 2 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 555. Up to 91 conditions per place. [2022-12-11 23:41:46,386 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 21 selfloop transitions, 9 changer transitions 25/108 dead transitions. [2022-12-11 23:41:46,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 108 transitions, 448 flow [2022-12-11 23:41:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 23:41:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 23:41:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 897 transitions. [2022-12-11 23:41:46,388 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8117647058823529 [2022-12-11 23:41:46,389 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 15 predicate places. [2022-12-11 23:41:46,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 108 transitions, 448 flow [2022-12-11 23:41:46,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 83 transitions, 298 flow [2022-12-11 23:41:46,391 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 298 flow [2022-12-11 23:41:46,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 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) [2022-12-11 23:41:46,391 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:41:46,391 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:41:46,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 23:41:46,391 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 1 more)] === [2022-12-11 23:41:46,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:41:46,392 INFO L85 PathProgramCache]: Analyzing trace with hash -333146468, now seen corresponding path program 1 times [2022-12-11 23:41:46,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:41:46,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916802298] [2022-12-11 23:41:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:41:46,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:41:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:41:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:41:46,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:41:46,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916802298] [2022-12-11 23:41:46,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916802298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:41:46,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:41:46,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:41:46,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015479494] [2022-12-11 23:41:46,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:41:46,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:41:46,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:41:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:41:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:41:46,536 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-11 23:41:46,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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) [2022-12-11 23:41:46,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:41:46,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-11 23:41:46,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:41:46,800 INFO L130 PetriNetUnfolder]: 161/621 cut-off events. [2022-12-11 23:41:46,800 INFO L131 PetriNetUnfolder]: For 191/309 co-relation queries the response was YES. [2022-12-11 23:41:46,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1442 conditions, 621 events. 161/621 cut-off events. For 191/309 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3841 event pairs, 0 based on Foata normal form. 20/635 useless extension candidates. Maximal degree in co-relation 1395. Up to 145 conditions per place. [2022-12-11 23:41:46,803 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 39 selfloop transitions, 19 changer transitions 50/159 dead transitions. [2022-12-11 23:41:46,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 159 transitions, 951 flow [2022-12-11 23:41:46,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-11 23:41:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-11 23:41:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1157 transitions. [2022-12-11 23:41:46,806 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8006920415224914 [2022-12-11 23:41:46,806 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2022-12-11 23:41:46,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 159 transitions, 951 flow [2022-12-11 23:41:46,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 109 transitions, 575 flow [2022-12-11 23:41:46,819 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 109 transitions, 575 flow [2022-12-11 23:41:46,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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) [2022-12-11 23:41:46,820 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:41:46,820 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:41:46,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 23:41:46,820 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 1 more)] === [2022-12-11 23:41:46,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:41:46,821 INFO L85 PathProgramCache]: Analyzing trace with hash 511094384, now seen corresponding path program 2 times [2022-12-11 23:41:46,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:41:46,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568279076] [2022-12-11 23:41:46,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:41:46,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:41:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:41:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:41:46,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:41:46,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568279076] [2022-12-11 23:41:46,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568279076] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:41:46,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:41:46,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:41:46,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725893373] [2022-12-11 23:41:46,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:41:46,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:41:46,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:41:46,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:41:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:41:46,934 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2022-12-11 23:41:46,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 109 transitions, 575 flow. Second operand has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 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) [2022-12-11 23:41:46,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:41:46,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2022-12-11 23:41:46,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:41:47,084 INFO L130 PetriNetUnfolder]: 111/435 cut-off events. [2022-12-11 23:41:47,084 INFO L131 PetriNetUnfolder]: For 251/552 co-relation queries the response was YES. [2022-12-11 23:41:47,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 435 events. 111/435 cut-off events. For 251/552 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2252 event pairs, 0 based on Foata normal form. 17/448 useless extension candidates. Maximal degree in co-relation 1177. Up to 107 conditions per place. [2022-12-11 23:41:47,087 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 41 selfloop transitions, 23 changer transitions 47/165 dead transitions. [2022-12-11 23:41:47,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 165 transitions, 1251 flow [2022-12-11 23:41:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 23:41:47,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 23:41:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 898 transitions. [2022-12-11 23:41:47,089 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8126696832579186 [2022-12-11 23:41:47,089 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2022-12-11 23:41:47,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 165 transitions, 1251 flow [2022-12-11 23:41:47,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 118 transitions, 781 flow [2022-12-11 23:41:47,092 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 118 transitions, 781 flow [2022-12-11 23:41:47,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 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) [2022-12-11 23:41:47,092 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:41:47,092 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:41:47,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 23:41:47,092 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 1 more)] === [2022-12-11 23:41:47,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:41:47,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2079518756, now seen corresponding path program 1 times [2022-12-11 23:41:47,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:41:47,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532739175] [2022-12-11 23:41:47,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:41:47,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:41:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:41:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:41:47,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:41:47,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532739175] [2022-12-11 23:41:47,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532739175] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:41:47,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:41:47,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 23:41:47,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882608644] [2022-12-11 23:41:47,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:41:47,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 23:41:47,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:41:47,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 23:41:47,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-11 23:41:47,213 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-11 23:41:47,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 118 transitions, 781 flow. Second operand has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 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) [2022-12-11 23:41:47,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:41:47,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-11 23:41:47,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:41:47,336 INFO L130 PetriNetUnfolder]: 60/327 cut-off events. [2022-12-11 23:41:47,336 INFO L131 PetriNetUnfolder]: For 411/810 co-relation queries the response was YES. [2022-12-11 23:41:47,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 327 events. 60/327 cut-off events. For 411/810 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1556 event pairs, 0 based on Foata normal form. 23/344 useless extension candidates. Maximal degree in co-relation 965. Up to 75 conditions per place. [2022-12-11 23:41:47,338 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 26 selfloop transitions, 9 changer transitions 59/145 dead transitions. [2022-12-11 23:41:47,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 145 transitions, 1203 flow [2022-12-11 23:41:47,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 23:41:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 23:41:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 747 transitions. [2022-12-11 23:41:47,340 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7989304812834225 [2022-12-11 23:41:47,340 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2022-12-11 23:41:47,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 145 transitions, 1203 flow [2022-12-11 23:41:47,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 86 transitions, 537 flow [2022-12-11 23:41:47,341 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 537 flow [2022-12-11 23:41:47,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 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) [2022-12-11 23:41:47,342 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:41:47,342 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:41:47,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 23:41:47,342 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 1 more)] === [2022-12-11 23:41:47,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:41:47,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1405965593, now seen corresponding path program 1 times [2022-12-11 23:41:47,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:41:47,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22271548] [2022-12-11 23:41:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:41:47,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:41:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:41:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:41:47,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:41:47,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22271548] [2022-12-11 23:41:47,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22271548] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:41:47,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:41:47,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:41:47,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336632316] [2022-12-11 23:41:47,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:41:47,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:41:47,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:41:47,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:41:47,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:41:47,447 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-11 23:41:47,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 537 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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) [2022-12-11 23:41:47,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:41:47,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-11 23:41:47,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:41:47,553 INFO L130 PetriNetUnfolder]: 35/301 cut-off events. [2022-12-11 23:41:47,553 INFO L131 PetriNetUnfolder]: For 618/718 co-relation queries the response was YES. [2022-12-11 23:41:47,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 301 events. 35/301 cut-off events. For 618/718 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1432 event pairs, 0 based on Foata normal form. 11/305 useless extension candidates. Maximal degree in co-relation 791. Up to 48 conditions per place. [2022-12-11 23:41:47,555 INFO L137 encePairwiseOnDemand]: 77/85 looper letters, 19 selfloop transitions, 4 changer transitions 31/110 dead transitions. [2022-12-11 23:41:47,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 110 transitions, 909 flow [2022-12-11 23:41:47,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 23:41:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 23:41:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 710 transitions. [2022-12-11 23:41:47,557 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2022-12-11 23:41:47,557 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 26 predicate places. [2022-12-11 23:41:47,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 110 transitions, 909 flow [2022-12-11 23:41:47,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 79 transitions, 499 flow [2022-12-11 23:41:47,558 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 79 transitions, 499 flow [2022-12-11 23:41:47,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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) [2022-12-11 23:41:47,559 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:41:47,559 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:41:47,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 23:41:47,559 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 1 more)] === [2022-12-11 23:41:47,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:41:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1153231451, now seen corresponding path program 1 times [2022-12-11 23:41:47,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:41:47,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044693002] [2022-12-11 23:41:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:41:47,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:41:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:41:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:41:47,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:41:47,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044693002] [2022-12-11 23:41:47,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044693002] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:41:47,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:41:47,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:41:47,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917198554] [2022-12-11 23:41:47,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:41:47,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:41:47,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:41:47,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:41:47,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:41:47,679 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-11 23:41:47,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 79 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 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) [2022-12-11 23:41:47,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:41:47,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-11 23:41:47,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:41:47,796 INFO L130 PetriNetUnfolder]: 147/474 cut-off events. [2022-12-11 23:41:47,796 INFO L131 PetriNetUnfolder]: For 617/670 co-relation queries the response was YES. [2022-12-11 23:41:47,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 474 events. 147/474 cut-off events. For 617/670 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2366 event pairs, 3 based on Foata normal form. 4/463 useless extension candidates. Maximal degree in co-relation 1132. Up to 111 conditions per place. [2022-12-11 23:41:47,799 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 25 selfloop transitions, 8 changer transitions 21/113 dead transitions. [2022-12-11 23:41:47,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 113 transitions, 735 flow [2022-12-11 23:41:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 23:41:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 23:41:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 728 transitions. [2022-12-11 23:41:47,801 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8564705882352941 [2022-12-11 23:41:47,801 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 29 predicate places. [2022-12-11 23:41:47,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 113 transitions, 735 flow [2022-12-11 23:41:47,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 92 transitions, 651 flow [2022-12-11 23:41:47,803 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 651 flow [2022-12-11 23:41:47,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 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) [2022-12-11 23:41:47,803 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:41:47,803 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:41:47,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 23:41:47,804 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 1 more)] === [2022-12-11 23:41:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:41:47,804 INFO L85 PathProgramCache]: Analyzing trace with hash -914728954, now seen corresponding path program 1 times [2022-12-11 23:41:47,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:41:47,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530661486] [2022-12-11 23:41:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:41:47,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:41:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:41:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:41:47,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:41:47,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530661486] [2022-12-11 23:41:47,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530661486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:41:47,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:41:47,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:41:47,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793392903] [2022-12-11 23:41:47,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:41:47,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:41:47,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:41:47,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:41:47,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:41:47,950 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-11 23:41:47,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 92 transitions, 651 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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) [2022-12-11 23:41:47,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:41:47,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-11 23:41:47,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:41:48,075 INFO L130 PetriNetUnfolder]: 55/272 cut-off events. [2022-12-11 23:41:48,075 INFO L131 PetriNetUnfolder]: For 762/898 co-relation queries the response was YES. [2022-12-11 23:41:48,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 272 events. 55/272 cut-off events. For 762/898 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1157 event pairs, 4 based on Foata normal form. 27/294 useless extension candidates. Maximal degree in co-relation 749. Up to 80 conditions per place. [2022-12-11 23:41:48,076 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 22 selfloop transitions, 9 changer transitions 28/118 dead transitions. [2022-12-11 23:41:48,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 118 transitions, 888 flow [2022-12-11 23:41:48,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 23:41:48,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 23:41:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 935 transitions. [2022-12-11 23:41:48,078 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2022-12-11 23:41:48,080 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 39 predicate places. [2022-12-11 23:41:48,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 118 transitions, 888 flow [2022-12-11 23:41:48,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 90 transitions, 720 flow [2022-12-11 23:41:48,081 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 90 transitions, 720 flow [2022-12-11 23:41:48,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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) [2022-12-11 23:41:48,082 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:41:48,082 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:41:48,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 23:41:48,083 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 1 more)] === [2022-12-11 23:41:48,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:41:48,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1845208965, now seen corresponding path program 1 times [2022-12-11 23:41:48,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:41:48,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967686112] [2022-12-11 23:41:48,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:41:48,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:41:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:41:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:41:48,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:41:48,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967686112] [2022-12-11 23:41:48,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967686112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:41:48,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:41:48,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 23:41:48,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200617414] [2022-12-11 23:41:48,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:41:48,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 23:41:48,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:41:48,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 23:41:48,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-11 23:41:48,218 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-11 23:41:48,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 90 transitions, 720 flow. Second operand has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 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) [2022-12-11 23:41:48,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:41:48,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-11 23:41:48,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:41:48,322 INFO L130 PetriNetUnfolder]: 19/180 cut-off events. [2022-12-11 23:41:48,322 INFO L131 PetriNetUnfolder]: For 912/972 co-relation queries the response was YES. [2022-12-11 23:41:48,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 180 events. 19/180 cut-off events. For 912/972 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 670 event pairs, 0 based on Foata normal form. 20/200 useless extension candidates. Maximal degree in co-relation 520. Up to 25 conditions per place. [2022-12-11 23:41:48,323 INFO L137 encePairwiseOnDemand]: 77/85 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2022-12-11 23:41:48,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 83 transitions, 684 flow [2022-12-11 23:41:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 23:41:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 23:41:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 913 transitions. [2022-12-11 23:41:48,326 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8262443438914027 [2022-12-11 23:41:48,326 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 37 predicate places. [2022-12-11 23:41:48,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 83 transitions, 684 flow [2022-12-11 23:41:48,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-11 23:41:48,327 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-11 23:41:48,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 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) [2022-12-11 23:41:48,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-11 23:41:48,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-11 23:41:48,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-11 23:41:48,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-11 23:41:48,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-11 23:41:48,333 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:41:48,335 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 23:41:48,335 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 23:41:48,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 11:41:48 BasicIcfg [2022-12-11 23:41:48,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 23:41:48,345 INFO L158 Benchmark]: Toolchain (without parser) took 4284.24ms. Allocated memory was 195.0MB in the beginning and 312.5MB in the end (delta: 117.4MB). Free memory was 169.2MB in the beginning and 144.1MB in the end (delta: 25.1MB). Peak memory consumption was 143.0MB. Max. memory is 8.0GB. [2022-12-11 23:41:48,345 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 195.0MB. Free memory is still 172.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 23:41:48,345 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.61ms. Allocated memory is still 195.0MB. Free memory was 169.2MB in the beginning and 145.7MB in the end (delta: 23.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-12-11 23:41:48,346 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.84ms. Allocated memory is still 195.0MB. Free memory was 145.7MB in the beginning and 144.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 23:41:48,346 INFO L158 Benchmark]: Boogie Preprocessor took 30.34ms. Allocated memory is still 195.0MB. Free memory was 144.0MB in the beginning and 142.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 23:41:48,346 INFO L158 Benchmark]: RCFGBuilder took 327.72ms. Allocated memory is still 195.0MB. Free memory was 142.1MB in the beginning and 169.8MB in the end (delta: -27.7MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. [2022-12-11 23:41:48,346 INFO L158 Benchmark]: TraceAbstraction took 3516.20ms. Allocated memory was 195.0MB in the beginning and 312.5MB in the end (delta: 117.4MB). Free memory was 168.8MB in the beginning and 144.1MB in the end (delta: 24.7MB). Peak memory consumption was 142.2MB. Max. memory is 8.0GB. [2022-12-11 23:41:48,347 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 195.0MB. Free memory is still 172.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 359.61ms. Allocated memory is still 195.0MB. Free memory was 169.2MB in the beginning and 145.7MB in the end (delta: 23.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.84ms. Allocated memory is still 195.0MB. Free memory was 145.7MB in the beginning and 144.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.34ms. Allocated memory is still 195.0MB. Free memory was 144.0MB in the beginning and 142.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 327.72ms. Allocated memory is still 195.0MB. Free memory was 142.1MB in the beginning and 169.8MB in the end (delta: -27.7MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. * TraceAbstraction took 3516.20ms. Allocated memory was 195.0MB in the beginning and 312.5MB in the end (delta: 117.4MB). Free memory was 168.8MB in the beginning and 144.1MB in the end (delta: 24.7MB). Peak memory consumption was 142.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 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: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 459 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 459 mSDsluCounter, 534 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 409 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 516 IncrementalHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 125 mSDtfsCounter, 516 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=781occurred in iteration=4, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 3148 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 499 NumberOfCodeBlocks, 499 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 490 ConstructedInterpolants, 0 QuantifiedInterpolants, 2084 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2022-12-11 23:41:48,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...