/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 18:39:49,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 18:39:49,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 18:39:49,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 18:39:49,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 18:39:49,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 18:39:49,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 18:39:49,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 18:39:49,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 18:39:49,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 18:39:49,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 18:39:49,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 18:39:49,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 18:39:49,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 18:39:49,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 18:39:49,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 18:39:49,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 18:39:49,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 18:39:49,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 18:39:49,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 18:39:49,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 18:39:49,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 18:39:49,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 18:39:49,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 18:39:49,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 18:39:49,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 18:39:49,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 18:39:49,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 18:39:49,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 18:39:49,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 18:39:49,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 18:39:49,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 18:39:49,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 18:39:49,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 18:39:49,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 18:39:49,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 18:39:49,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 18:39:49,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 18:39:49,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 18:39:49,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 18:39:49,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 18:39:49,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 18:39:49,368 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 18:39:49,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 18:39:49,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 18:39:49,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 18:39:49,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 18:39:49,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 18:39:49,371 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 18:39:49,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 18:39:49,371 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 18:39:49,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 18:39:49,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 18:39:49,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 18:39:49,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 18:39:49,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 18:39:49,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 18:39:49,373 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 18:39:49,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 18:39:49,374 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 18:39:49,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 18:39:49,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 18:39:49,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 18:39:49,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 18:39:49,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 18:39:49,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:39:49,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 18:39:49,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 18:39:49,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 18:39:49,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 18:39:49,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 18:39:49,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 18:39:49,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 18:39:49,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 18:39:49,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 18:39:49,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 18:39:49,738 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 18:39:49,739 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 18:39:49,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2022-12-12 18:39:50,930 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 18:39:51,243 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 18:39:51,244 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2022-12-12 18:39:51,254 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce829154b/3197be13dc584e35a8304b2371345650/FLAGa9b3b3e0b [2022-12-12 18:39:51,268 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce829154b/3197be13dc584e35a8304b2371345650 [2022-12-12 18:39:51,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 18:39:51,271 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 18:39:51,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 18:39:51,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 18:39:51,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 18:39:51,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7826f85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51, skipping insertion in model container [2022-12-12 18:39:51,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 18:39:51,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 18:39:51,450 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/mix057_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-12 18:39:51,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,595 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,595 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,615 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,615 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,652 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,659 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,659 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:39:51,675 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 18:39:51,691 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/mix057_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-12 18:39:51,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:39:51,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:39:51,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:39:51,808 INFO L208 MainTranslator]: Completed translation [2022-12-12 18:39:51,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51 WrapperNode [2022-12-12 18:39:51,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 18:39:51,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 18:39:51,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 18:39:51,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 18:39:51,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,854 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2022-12-12 18:39:51,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 18:39:51,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 18:39:51,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 18:39:51,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 18:39:51,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,883 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 18:39:51,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 18:39:51,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 18:39:51,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 18:39:51,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51" (1/1) ... [2022-12-12 18:39:51,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:39:51,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:39:51,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 18:39:51,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 18:39:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 18:39:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 18:39:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 18:39:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 18:39:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 18:39:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 18:39:51,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 18:39:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 18:39:51,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 18:39:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 18:39:51,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 18:39:51,966 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-12 18:39:51,966 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-12 18:39:51,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 18:39:51,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 18:39:51,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 18:39:51,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 18:39:51,967 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 18:39:52,104 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 18:39:52,106 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 18:39:52,481 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 18:39:52,630 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 18:39:52,632 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 18:39:52,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:39:52 BoogieIcfgContainer [2022-12-12 18:39:52,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 18:39:52,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 18:39:52,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 18:39:52,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 18:39:52,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 06:39:51" (1/3) ... [2022-12-12 18:39:52,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4678f01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:39:52, skipping insertion in model container [2022-12-12 18:39:52,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:39:51" (2/3) ... [2022-12-12 18:39:52,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4678f01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:39:52, skipping insertion in model container [2022-12-12 18:39:52,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:39:52" (3/3) ... [2022-12-12 18:39:52,643 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.oepc_pso.oepc_rmo.oepc.i [2022-12-12 18:39:52,661 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 18:39:52,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-12 18:39:52,661 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 18:39:52,724 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 18:39:52,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 274 flow [2022-12-12 18:39:52,840 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2022-12-12 18:39:52,840 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:39:52,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-12 18:39:52,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 127 transitions, 274 flow [2022-12-12 18:39:52,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 123 transitions, 258 flow [2022-12-12 18:39:52,855 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 18:39:52,875 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 123 transitions, 258 flow [2022-12-12 18:39:52,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 123 transitions, 258 flow [2022-12-12 18:39:52,910 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2022-12-12 18:39:52,911 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:39:52,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-12 18:39:52,920 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 123 transitions, 258 flow [2022-12-12 18:39:52,921 INFO L226 LiptonReduction]: Number of co-enabled transitions 3058 [2022-12-12 18:39:58,876 INFO L241 LiptonReduction]: Total number of compositions: 96 [2022-12-12 18:39:58,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 18:39:58,906 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;@6a9397ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 18:39:58,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-12 18:39:58,910 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2022-12-12 18:39:58,910 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:39:58,910 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:39:58,911 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-12 18:39:58,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 18:39:58,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:39:58,915 INFO L85 PathProgramCache]: Analyzing trace with hash 561802, now seen corresponding path program 1 times [2022-12-12 18:39:58,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:39:58,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181490257] [2022-12-12 18:39:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:39:58,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:39:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:39:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:39:59,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:39:59,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181490257] [2022-12-12 18:39:59,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181490257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:39:59,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:39:59,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 18:39:59,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167122729] [2022-12-12 18:39:59,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:39:59,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:39:59,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:39:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:39:59,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:39:59,339 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 81 [2022-12-12 18:39:59,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:39:59,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:39:59,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 81 [2022-12-12 18:39:59,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:40:07,235 INFO L130 PetriNetUnfolder]: 66790/94452 cut-off events. [2022-12-12 18:40:07,235 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-12-12 18:40:07,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182741 conditions, 94452 events. 66790/94452 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 4409. Compared 694568 event pairs, 26656 based on Foata normal form. 0/60521 useless extension candidates. Maximal degree in co-relation 182729. Up to 73765 conditions per place. [2022-12-12 18:40:07,617 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 48 selfloop transitions, 2 changer transitions 71/136 dead transitions. [2022-12-12 18:40:07,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 136 transitions, 533 flow [2022-12-12 18:40:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:40:07,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:40:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2022-12-12 18:40:07,628 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2022-12-12 18:40:07,633 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2022-12-12 18:40:07,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 136 transitions, 533 flow [2022-12-12 18:40:07,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 65 transitions, 251 flow [2022-12-12 18:40:07,769 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 65 transitions, 251 flow [2022-12-12 18:40:07,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:07,769 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:40:07,769 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:40:07,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 18:40:07,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 18:40:07,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:40:07,777 INFO L85 PathProgramCache]: Analyzing trace with hash 195712061, now seen corresponding path program 1 times [2022-12-12 18:40:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:40:07,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180911020] [2022-12-12 18:40:07,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:40:07,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:40:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:40:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:40:08,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:40:08,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180911020] [2022-12-12 18:40:08,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180911020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:40:08,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:40:08,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 18:40:08,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959066342] [2022-12-12 18:40:08,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:40:08,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:40:08,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:40:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:40:08,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:40:08,053 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 81 [2022-12-12 18:40:08,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 65 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:08,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:40:08,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 81 [2022-12-12 18:40:08,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:40:11,943 INFO L130 PetriNetUnfolder]: 37621/52288 cut-off events. [2022-12-12 18:40:11,943 INFO L131 PetriNetUnfolder]: For 5544/5544 co-relation queries the response was YES. [2022-12-12 18:40:12,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144632 conditions, 52288 events. 37621/52288 cut-off events. For 5544/5544 co-relation queries the response was YES. Maximal size of possible extension queue 1881. Compared 335079 event pairs, 2855 based on Foata normal form. 1250/45074 useless extension candidates. Maximal degree in co-relation 144617. Up to 36126 conditions per place. [2022-12-12 18:40:12,216 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 86 selfloop transitions, 12 changer transitions 2/111 dead transitions. [2022-12-12 18:40:12,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 111 transitions, 639 flow [2022-12-12 18:40:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:40:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:40:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2022-12-12 18:40:12,222 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3950617283950617 [2022-12-12 18:40:12,223 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -34 predicate places. [2022-12-12 18:40:12,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 111 transitions, 639 flow [2022-12-12 18:40:12,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 109 transitions, 631 flow [2022-12-12 18:40:12,373 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 109 transitions, 631 flow [2022-12-12 18:40:12,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:12,373 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:40:12,374 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:40:12,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 18:40:12,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 18:40:12,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:40:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1772104124, now seen corresponding path program 1 times [2022-12-12 18:40:12,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:40:12,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825675097] [2022-12-12 18:40:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:40:12,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:40:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:40:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:40:12,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:40:12,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825675097] [2022-12-12 18:40:12,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825675097] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:40:12,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:40:12,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:40:12,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130536322] [2022-12-12 18:40:12,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:40:12,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:40:12,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:40:12,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:40:12,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:40:12,548 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 81 [2022-12-12 18:40:12,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 109 transitions, 631 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:12,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:40:12,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 81 [2022-12-12 18:40:12,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:40:15,887 INFO L130 PetriNetUnfolder]: 29276/41369 cut-off events. [2022-12-12 18:40:15,887 INFO L131 PetriNetUnfolder]: For 3170/3170 co-relation queries the response was YES. [2022-12-12 18:40:15,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155044 conditions, 41369 events. 29276/41369 cut-off events. For 3170/3170 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 261891 event pairs, 988 based on Foata normal form. 42/34630 useless extension candidates. Maximal degree in co-relation 155026. Up to 29851 conditions per place. [2022-12-12 18:40:16,104 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 134 selfloop transitions, 18 changer transitions 0/163 dead transitions. [2022-12-12 18:40:16,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 163 transitions, 1259 flow [2022-12-12 18:40:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:40:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:40:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2022-12-12 18:40:16,105 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3734567901234568 [2022-12-12 18:40:16,106 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -32 predicate places. [2022-12-12 18:40:16,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 163 transitions, 1259 flow [2022-12-12 18:40:16,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 163 transitions, 1259 flow [2022-12-12 18:40:16,245 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 163 transitions, 1259 flow [2022-12-12 18:40:16,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:16,245 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:40:16,245 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:40:16,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 18:40:16,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 18:40:16,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:40:16,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1772104341, now seen corresponding path program 1 times [2022-12-12 18:40:16,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:40:16,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871704051] [2022-12-12 18:40:16,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:40:16,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:40:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:40:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:40:16,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:40:16,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871704051] [2022-12-12 18:40:16,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871704051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:40:16,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:40:16,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:40:16,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022198112] [2022-12-12 18:40:16,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:40:16,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:40:16,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:40:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:40:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:40:16,368 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 81 [2022-12-12 18:40:16,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 163 transitions, 1259 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:16,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:40:16,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 81 [2022-12-12 18:40:16,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:40:19,782 INFO L130 PetriNetUnfolder]: 28854/40788 cut-off events. [2022-12-12 18:40:19,782 INFO L131 PetriNetUnfolder]: For 3204/3204 co-relation queries the response was YES. [2022-12-12 18:40:19,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191661 conditions, 40788 events. 28854/40788 cut-off events. For 3204/3204 co-relation queries the response was YES. Maximal size of possible extension queue 1520. Compared 256653 event pairs, 1008 based on Foata normal form. 60/34125 useless extension candidates. Maximal degree in co-relation 191640. Up to 29524 conditions per place. [2022-12-12 18:40:20,003 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 207 selfloop transitions, 31 changer transitions 0/249 dead transitions. [2022-12-12 18:40:20,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 249 transitions, 2438 flow [2022-12-12 18:40:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:40:20,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:40:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2022-12-12 18:40:20,005 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.39197530864197533 [2022-12-12 18:40:20,005 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -29 predicate places. [2022-12-12 18:40:20,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 249 transitions, 2438 flow [2022-12-12 18:40:20,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 249 transitions, 2438 flow [2022-12-12 18:40:20,152 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 249 transitions, 2438 flow [2022-12-12 18:40:20,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:20,153 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:40:20,153 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:40:20,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 18:40:20,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 18:40:20,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:40:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash -899349258, now seen corresponding path program 1 times [2022-12-12 18:40:20,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:40:20,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338029918] [2022-12-12 18:40:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:40:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:40:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:40:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:40:20,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:40:20,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338029918] [2022-12-12 18:40:20,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338029918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:40:20,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:40:20,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:40:20,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193606061] [2022-12-12 18:40:20,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:40:20,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:40:20,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:40:20,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:40:20,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:40:20,277 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 81 [2022-12-12 18:40:20,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 249 transitions, 2438 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:20,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:40:20,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 81 [2022-12-12 18:40:20,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:40:23,669 INFO L130 PetriNetUnfolder]: 28521/40330 cut-off events. [2022-12-12 18:40:23,669 INFO L131 PetriNetUnfolder]: For 3175/3175 co-relation queries the response was YES. [2022-12-12 18:40:23,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227867 conditions, 40330 events. 28521/40330 cut-off events. For 3175/3175 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 253223 event pairs, 824 based on Foata normal form. 50/33704 useless extension candidates. Maximal degree in co-relation 227843. Up to 29221 conditions per place. [2022-12-12 18:40:24,172 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 273 selfloop transitions, 43 changer transitions 0/327 dead transitions. [2022-12-12 18:40:24,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 327 transitions, 3848 flow [2022-12-12 18:40:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:40:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:40:24,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2022-12-12 18:40:24,180 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.37962962962962965 [2022-12-12 18:40:24,183 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -26 predicate places. [2022-12-12 18:40:24,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 327 transitions, 3848 flow [2022-12-12 18:40:24,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 327 transitions, 3848 flow [2022-12-12 18:40:24,367 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 327 transitions, 3848 flow [2022-12-12 18:40:24,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:24,368 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:40:24,368 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:40:24,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 18:40:24,368 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 18:40:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:40:24,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2110061033, now seen corresponding path program 1 times [2022-12-12 18:40:24,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:40:24,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622147728] [2022-12-12 18:40:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:40:24,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:40:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:40:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:40:24,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:40:24,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622147728] [2022-12-12 18:40:24,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622147728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:40:24,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:40:24,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:40:24,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273814542] [2022-12-12 18:40:24,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:40:24,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:40:24,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:40:24,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:40:24,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:40:24,488 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 81 [2022-12-12 18:40:24,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 327 transitions, 3848 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:24,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:40:24,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 81 [2022-12-12 18:40:24,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:40:30,194 INFO L130 PetriNetUnfolder]: 41805/59746 cut-off events. [2022-12-12 18:40:30,194 INFO L131 PetriNetUnfolder]: For 4757/4757 co-relation queries the response was YES. [2022-12-12 18:40:30,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393796 conditions, 59746 events. 41805/59746 cut-off events. For 4757/4757 co-relation queries the response was YES. Maximal size of possible extension queue 2320. Compared 405347 event pairs, 680 based on Foata normal form. 720/49722 useless extension candidates. Maximal degree in co-relation 393769. Up to 43739 conditions per place. [2022-12-12 18:40:30,610 INFO L137 encePairwiseOnDemand]: 72/81 looper letters, 338 selfloop transitions, 49 changer transitions 7/405 dead transitions. [2022-12-12 18:40:30,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 405 transitions, 5571 flow [2022-12-12 18:40:30,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:40:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:40:30,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2022-12-12 18:40:30,612 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4012345679012346 [2022-12-12 18:40:30,612 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -23 predicate places. [2022-12-12 18:40:30,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 405 transitions, 5571 flow [2022-12-12 18:40:30,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 398 transitions, 5473 flow [2022-12-12 18:40:30,995 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 398 transitions, 5473 flow [2022-12-12 18:40:30,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:30,995 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:40:30,995 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:40:30,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 18:40:30,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 18:40:30,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:40:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2109961089, now seen corresponding path program 1 times [2022-12-12 18:40:30,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:40:30,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921825718] [2022-12-12 18:40:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:40:30,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:40:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:40:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:40:31,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:40:31,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921825718] [2022-12-12 18:40:31,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921825718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:40:31,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:40:31,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:40:31,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782204317] [2022-12-12 18:40:31,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:40:31,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:40:31,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:40:31,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:40:31,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:40:31,157 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 81 [2022-12-12 18:40:31,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 398 transitions, 5473 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:31,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:40:31,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 81 [2022-12-12 18:40:31,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:40:41,700 INFO L130 PetriNetUnfolder]: 70666/97162 cut-off events. [2022-12-12 18:40:41,700 INFO L131 PetriNetUnfolder]: For 219547/221345 co-relation queries the response was YES. [2022-12-12 18:40:42,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675415 conditions, 97162 events. 70666/97162 cut-off events. For 219547/221345 co-relation queries the response was YES. Maximal size of possible extension queue 3697. Compared 644363 event pairs, 10379 based on Foata normal form. 1213/82947 useless extension candidates. Maximal degree in co-relation 675385. Up to 87632 conditions per place. [2022-12-12 18:40:42,381 INFO L137 encePairwiseOnDemand]: 67/81 looper letters, 486 selfloop transitions, 111 changer transitions 0/631 dead transitions. [2022-12-12 18:40:42,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 631 transitions, 9935 flow [2022-12-12 18:40:42,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:40:42,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:40:42,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2022-12-12 18:40:42,383 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3950617283950617 [2022-12-12 18:40:42,383 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -21 predicate places. [2022-12-12 18:40:42,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 631 transitions, 9935 flow [2022-12-12 18:40:42,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 631 transitions, 9935 flow [2022-12-12 18:40:42,756 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 631 transitions, 9935 flow [2022-12-12 18:40:42,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:42,756 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:40:42,756 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:40:42,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 18:40:42,756 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 18:40:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:40:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash -226807880, now seen corresponding path program 1 times [2022-12-12 18:40:42,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:40:42,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148360257] [2022-12-12 18:40:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:40:42,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:40:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:40:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:40:42,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:40:42,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148360257] [2022-12-12 18:40:42,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148360257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:40:42,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:40:42,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:40:42,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865712230] [2022-12-12 18:40:42,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:40:42,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:40:42,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:40:42,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:40:42,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:40:42,900 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 81 [2022-12-12 18:40:42,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 631 transitions, 9935 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:40:42,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:40:42,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 81 [2022-12-12 18:40:42,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:41:00,303 INFO L130 PetriNetUnfolder]: 109295/150512 cut-off events. [2022-12-12 18:41:00,304 INFO L131 PetriNetUnfolder]: For 460520/466371 co-relation queries the response was YES. [2022-12-12 18:41:00,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161240 conditions, 150512 events. 109295/150512 cut-off events. For 460520/466371 co-relation queries the response was YES. Maximal size of possible extension queue 6093. Compared 1058582 event pairs, 16011 based on Foata normal form. 2745/127836 useless extension candidates. Maximal degree in co-relation 1161207. Up to 138266 conditions per place. [2022-12-12 18:41:01,430 INFO L137 encePairwiseOnDemand]: 78/81 looper letters, 711 selfloop transitions, 24 changer transitions 80/849 dead transitions. [2022-12-12 18:41:01,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 849 transitions, 15053 flow [2022-12-12 18:41:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:41:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:41:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2022-12-12 18:41:01,431 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3786008230452675 [2022-12-12 18:41:01,432 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -19 predicate places. [2022-12-12 18:41:01,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 849 transitions, 15053 flow [2022-12-12 18:41:01,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 769 transitions, 13613 flow [2022-12-12 18:41:01,878 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 769 transitions, 13613 flow [2022-12-12 18:41:01,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:41:01,878 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:41:01,878 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:01,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 18:41:01,879 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 18:41:01,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:41:01,879 INFO L85 PathProgramCache]: Analyzing trace with hash 171623198, now seen corresponding path program 1 times [2022-12-12 18:41:01,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:41:01,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153847320] [2022-12-12 18:41:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:41:01,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:41:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:41:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:41:02,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:41:02,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153847320] [2022-12-12 18:41:02,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153847320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:41:02,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:41:02,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:41:02,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776300542] [2022-12-12 18:41:02,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:41:02,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:41:02,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:41:02,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:41:02,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:41:02,048 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 81 [2022-12-12 18:41:02,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 769 transitions, 13613 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:41:02,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:41:02,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 81 [2022-12-12 18:41:02,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand