/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 22:17:08,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 22:17:08,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 22:17:08,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 22:17:08,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 22:17:08,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 22:17:08,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 22:17:08,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 22:17:08,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 22:17:08,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 22:17:08,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 22:17:08,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 22:17:08,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 22:17:08,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 22:17:08,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 22:17:08,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 22:17:08,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 22:17:08,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 22:17:08,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 22:17:08,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 22:17:08,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 22:17:08,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 22:17:08,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 22:17:08,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 22:17:08,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 22:17:08,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 22:17:08,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 22:17:08,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 22:17:08,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 22:17:08,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 22:17:08,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 22:17:08,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 22:17:08,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 22:17:08,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 22:17:08,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 22:17:08,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 22:17:08,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 22:17:08,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 22:17:08,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 22:17:08,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 22:17:08,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 22:17:08,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-05 22:17:08,667 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 22:17:08,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 22:17:08,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 22:17:08,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 22:17:08,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 22:17:08,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 22:17:08,670 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 22:17:08,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 22:17:08,670 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 22:17:08,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 22:17:08,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 22:17:08,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 22:17:08,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 22:17:08,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 22:17:08,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 22:17:08,671 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 22:17:08,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 22:17:08,672 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 22:17:08,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 22:17:08,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 22:17:08,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 22:17:08,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 22:17:08,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 22:17:08,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 22:17:08,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 22:17:08,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 22:17:08,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 22:17:08,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 22:17:08,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 22:17:08,673 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 22:17:08,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 22:17:08,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 22:17:08,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 22:17:08,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 22:17:08,970 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 22:17:08,970 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 22:17:08,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2022-12-05 22:17:09,948 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 22:17:10,119 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 22:17:10,119 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2022-12-05 22:17:10,125 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dc6da41b/731433b02fea4e8e96db7a4054e99741/FLAG1bca6076c [2022-12-05 22:17:10,137 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dc6da41b/731433b02fea4e8e96db7a4054e99741 [2022-12-05 22:17:10,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 22:17:10,139 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 22:17:10,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 22:17:10,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 22:17:10,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 22:17:10,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52becef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10, skipping insertion in model container [2022-12-05 22:17:10,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 22:17:10,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 22:17:10,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,301 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,303 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,303 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,305 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,306 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,308 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,308 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,310 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,310 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,320 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3907,3920] [2022-12-05 22:17:10,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 22:17:10,334 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 22:17:10,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,347 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,347 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,347 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,350 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,351 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,351 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:10,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:10,379 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3907,3920] [2022-12-05 22:17:10,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 22:17:10,390 INFO L208 MainTranslator]: Completed translation [2022-12-05 22:17:10,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10 WrapperNode [2022-12-05 22:17:10,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 22:17:10,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 22:17:10,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 22:17:10,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 22:17:10,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,432 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2022-12-05 22:17:10,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 22:17:10,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 22:17:10,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 22:17:10,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 22:17:10,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,454 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 22:17:10,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 22:17:10,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 22:17:10,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 22:17:10,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10" (1/1) ... [2022-12-05 22:17:10,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 22:17:10,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:10,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 22:17:10,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 22:17:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 22:17:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 22:17:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 22:17:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 22:17:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 22:17:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 22:17:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 22:17:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-05 22:17:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-05 22:17:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 22:17:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 22:17:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 22:17:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 22:17:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 22:17:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 22:17:10,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 22:17:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 22:17:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 22:17:10,529 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 22:17:10,616 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 22:17:10,617 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 22:17:10,832 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 22:17:10,878 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 22:17:10,878 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 22:17:10,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:17:10 BoogieIcfgContainer [2022-12-05 22:17:10,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 22:17:10,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 22:17:10,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 22:17:10,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 22:17:10,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 10:17:10" (1/3) ... [2022-12-05 22:17:10,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c6b921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 10:17:10, skipping insertion in model container [2022-12-05 22:17:10,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:10" (2/3) ... [2022-12-05 22:17:10,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c6b921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 10:17:10, skipping insertion in model container [2022-12-05 22:17:10,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:17:10" (3/3) ... [2022-12-05 22:17:10,885 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2022-12-05 22:17:10,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 22:17:10,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 22:17:10,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 22:17:10,991 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-05 22:17:11,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 131 transitions, 294 flow [2022-12-05 22:17:11,093 INFO L130 PetriNetUnfolder]: 2/127 cut-off events. [2022-12-05 22:17:11,094 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 22:17:11,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 127 events. 2/127 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-12-05 22:17:11,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 131 transitions, 294 flow [2022-12-05 22:17:11,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 115 transitions, 254 flow [2022-12-05 22:17:11,104 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 22:17:11,123 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 115 transitions, 254 flow [2022-12-05 22:17:11,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 115 transitions, 254 flow [2022-12-05 22:17:11,159 INFO L130 PetriNetUnfolder]: 2/115 cut-off events. [2022-12-05 22:17:11,159 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 22:17:11,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 115 events. 2/115 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-12-05 22:17:11,164 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 115 transitions, 254 flow [2022-12-05 22:17:11,164 INFO L188 LiptonReduction]: Number of co-enabled transitions 1824 [2022-12-05 22:17:14,815 INFO L203 LiptonReduction]: Total number of compositions: 82 [2022-12-05 22:17:14,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 22:17:14,829 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;@5c3885c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 22:17:14,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 22:17:14,834 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-12-05 22:17:14,834 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 22:17:14,834 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:14,835 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:14,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:17:14,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:14,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1768064526, now seen corresponding path program 1 times [2022-12-05 22:17:14,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:14,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978013518] [2022-12-05 22:17:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:14,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:15,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:15,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978013518] [2022-12-05 22:17:15,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978013518] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:15,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:15,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 22:17:15,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439601840] [2022-12-05 22:17:15,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:15,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 22:17:15,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:15,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 22:17:15,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 22:17:15,425 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2022-12-05 22:17:15,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:15,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:15,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2022-12-05 22:17:15,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:15,639 INFO L130 PetriNetUnfolder]: 1637/2377 cut-off events. [2022-12-05 22:17:15,639 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-12-05 22:17:15,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4966 conditions, 2377 events. 1637/2377 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11221 event pairs, 353 based on Foata normal form. 44/2418 useless extension candidates. Maximal degree in co-relation 4085. Up to 2159 conditions per place. [2022-12-05 22:17:15,653 INFO L137 encePairwiseOnDemand]: 30/33 looper letters, 39 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-12-05 22:17:15,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 202 flow [2022-12-05 22:17:15,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 22:17:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 22:17:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2022-12-05 22:17:15,661 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2022-12-05 22:17:15,662 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 90 flow. Second operand 3 states and 54 transitions. [2022-12-05 22:17:15,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 202 flow [2022-12-05 22:17:15,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 22:17:15,668 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 82 flow [2022-12-05 22:17:15,669 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2022-12-05 22:17:15,672 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2022-12-05 22:17:15,672 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 82 flow [2022-12-05 22:17:15,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:15,672 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:15,672 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:15,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 22:17:15,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:17:15,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:15,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1252281994, now seen corresponding path program 2 times [2022-12-05 22:17:15,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:15,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557104919] [2022-12-05 22:17:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:15,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:17,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:17,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557104919] [2022-12-05 22:17:17,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557104919] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:17,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:17,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-05 22:17:17,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678077709] [2022-12-05 22:17:17,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:17,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 22:17:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 22:17:17,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-12-05 22:17:17,288 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 22:17:17,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 82 flow. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:17,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:17,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 22:17:17,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:19,086 INFO L130 PetriNetUnfolder]: 6201/9041 cut-off events. [2022-12-05 22:17:19,087 INFO L131 PetriNetUnfolder]: For 687/687 co-relation queries the response was YES. [2022-12-05 22:17:19,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19190 conditions, 9041 events. 6201/9041 cut-off events. For 687/687 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 47092 event pairs, 1301 based on Foata normal form. 1/9042 useless extension candidates. Maximal degree in co-relation 13087. Up to 3265 conditions per place. [2022-12-05 22:17:19,120 INFO L137 encePairwiseOnDemand]: 19/33 looper letters, 202 selfloop transitions, 16 changer transitions 11/229 dead transitions. [2022-12-05 22:17:19,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 229 transitions, 1017 flow [2022-12-05 22:17:19,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-05 22:17:19,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-05 22:17:19,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 230 transitions. [2022-12-05 22:17:19,126 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2022-12-05 22:17:19,126 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 82 flow. Second operand 15 states and 230 transitions. [2022-12-05 22:17:19,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 229 transitions, 1017 flow [2022-12-05 22:17:19,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 229 transitions, 997 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:19,130 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 213 flow [2022-12-05 22:17:19,130 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=213, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2022-12-05 22:17:19,130 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2022-12-05 22:17:19,130 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 213 flow [2022-12-05 22:17:19,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:19,131 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:19,131 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:19,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 22:17:19,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:17:19,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:19,131 INFO L85 PathProgramCache]: Analyzing trace with hash -815198356, now seen corresponding path program 3 times [2022-12-05 22:17:19,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:19,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898225478] [2022-12-05 22:17:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:19,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:19,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:19,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898225478] [2022-12-05 22:17:19,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898225478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:19,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:19,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 22:17:19,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733237782] [2022-12-05 22:17:19,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:19,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 22:17:19,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:19,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 22:17:19,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 22:17:19,301 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2022-12-05 22:17:19,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:19,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:19,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2022-12-05 22:17:19,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:19,602 INFO L130 PetriNetUnfolder]: 2813/4346 cut-off events. [2022-12-05 22:17:19,602 INFO L131 PetriNetUnfolder]: For 6383/6490 co-relation queries the response was YES. [2022-12-05 22:17:19,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14420 conditions, 4346 events. 2813/4346 cut-off events. For 6383/6490 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 23386 event pairs, 714 based on Foata normal form. 116/4383 useless extension candidates. Maximal degree in co-relation 14382. Up to 3748 conditions per place. [2022-12-05 22:17:19,628 INFO L137 encePairwiseOnDemand]: 30/33 looper letters, 56 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2022-12-05 22:17:19,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 396 flow [2022-12-05 22:17:19,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 22:17:19,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 22:17:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2022-12-05 22:17:19,629 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2022-12-05 22:17:19,630 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 213 flow. Second operand 3 states and 54 transitions. [2022-12-05 22:17:19,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 396 flow [2022-12-05 22:17:19,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 390 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:19,653 INFO L231 Difference]: Finished difference. Result has 66 places, 49 transitions, 220 flow [2022-12-05 22:17:19,654 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=66, PETRI_TRANSITIONS=49} [2022-12-05 22:17:19,654 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2022-12-05 22:17:19,655 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 49 transitions, 220 flow [2022-12-05 22:17:19,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:19,655 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:19,655 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:19,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 22:17:19,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:17:19,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:19,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1063337374, now seen corresponding path program 4 times [2022-12-05 22:17:19,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:19,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291536003] [2022-12-05 22:17:19,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:19,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:20,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:20,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291536003] [2022-12-05 22:17:20,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291536003] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:20,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:20,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-05 22:17:20,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852746516] [2022-12-05 22:17:20,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:20,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 22:17:20,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:20,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 22:17:20,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-12-05 22:17:20,865 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 22:17:20,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 49 transitions, 220 flow. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:20,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:20,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 22:17:20,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:23,166 INFO L130 PetriNetUnfolder]: 8780/13706 cut-off events. [2022-12-05 22:17:23,166 INFO L131 PetriNetUnfolder]: For 19578/19578 co-relation queries the response was YES. [2022-12-05 22:17:23,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44167 conditions, 13706 events. 8780/13706 cut-off events. For 19578/19578 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 87154 event pairs, 1531 based on Foata normal form. 1/13707 useless extension candidates. Maximal degree in co-relation 33592. Up to 4726 conditions per place. [2022-12-05 22:17:23,244 INFO L137 encePairwiseOnDemand]: 20/33 looper letters, 253 selfloop transitions, 22 changer transitions 10/285 dead transitions. [2022-12-05 22:17:23,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 285 transitions, 1752 flow [2022-12-05 22:17:23,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-05 22:17:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-05 22:17:23,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 231 transitions. [2022-12-05 22:17:23,246 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-05 22:17:23,247 INFO L175 Difference]: Start difference. First operand has 66 places, 49 transitions, 220 flow. Second operand 14 states and 231 transitions. [2022-12-05 22:17:23,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 285 transitions, 1752 flow [2022-12-05 22:17:23,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 285 transitions, 1726 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:23,385 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 457 flow [2022-12-05 22:17:23,385 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=457, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2022-12-05 22:17:23,386 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2022-12-05 22:17:23,386 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 457 flow [2022-12-05 22:17:23,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:23,386 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:23,387 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:23,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 22:17:23,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:17:23,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:23,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1022715702, now seen corresponding path program 5 times [2022-12-05 22:17:23,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:23,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101091412] [2022-12-05 22:17:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:23,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:24,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:24,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101091412] [2022-12-05 22:17:24,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101091412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:24,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:24,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-05 22:17:24,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857703514] [2022-12-05 22:17:24,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:24,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 22:17:24,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:24,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 22:17:24,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-12-05 22:17:24,534 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 22:17:24,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 457 flow. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:24,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:24,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 22:17:24,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:27,049 INFO L130 PetriNetUnfolder]: 12167/19827 cut-off events. [2022-12-05 22:17:27,049 INFO L131 PetriNetUnfolder]: For 74145/74145 co-relation queries the response was YES. [2022-12-05 22:17:27,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81033 conditions, 19827 events. 12167/19827 cut-off events. For 74145/74145 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 141149 event pairs, 2529 based on Foata normal form. 1/19828 useless extension candidates. Maximal degree in co-relation 80695. Up to 6776 conditions per place. [2022-12-05 22:17:27,183 INFO L137 encePairwiseOnDemand]: 20/33 looper letters, 267 selfloop transitions, 49 changer transitions 9/325 dead transitions. [2022-12-05 22:17:27,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 325 transitions, 2598 flow [2022-12-05 22:17:27,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-05 22:17:27,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-05 22:17:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 213 transitions. [2022-12-05 22:17:27,185 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2022-12-05 22:17:27,185 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 457 flow. Second operand 14 states and 213 transitions. [2022-12-05 22:17:27,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 325 transitions, 2598 flow [2022-12-05 22:17:27,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 325 transitions, 2470 flow, removed 59 selfloop flow, removed 3 redundant places. [2022-12-05 22:17:27,635 INFO L231 Difference]: Finished difference. Result has 111 places, 110 transitions, 1056 flow [2022-12-05 22:17:27,635 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1056, PETRI_PLACES=111, PETRI_TRANSITIONS=110} [2022-12-05 22:17:27,637 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 65 predicate places. [2022-12-05 22:17:27,638 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 110 transitions, 1056 flow [2022-12-05 22:17:27,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:27,638 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:27,638 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:27,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 22:17:27,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:17:27,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:27,644 INFO L85 PathProgramCache]: Analyzing trace with hash -565563684, now seen corresponding path program 6 times [2022-12-05 22:17:27,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:27,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297737512] [2022-12-05 22:17:27,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:27,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:27,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:27,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297737512] [2022-12-05 22:17:27,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297737512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:27,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:27,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 22:17:27,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235200639] [2022-12-05 22:17:27,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:27,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 22:17:27,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:27,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 22:17:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 22:17:27,806 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2022-12-05 22:17:27,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 110 transitions, 1056 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:27,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:27,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2022-12-05 22:17:27,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:29,214 INFO L130 PetriNetUnfolder]: 8671/14700 cut-off events. [2022-12-05 22:17:29,214 INFO L131 PetriNetUnfolder]: For 122321/122394 co-relation queries the response was YES. [2022-12-05 22:17:29,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77455 conditions, 14700 events. 8671/14700 cut-off events. For 122321/122394 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 107948 event pairs, 4923 based on Foata normal form. 65/14720 useless extension candidates. Maximal degree in co-relation 77107. Up to 14285 conditions per place. [2022-12-05 22:17:29,300 INFO L137 encePairwiseOnDemand]: 30/33 looper letters, 106 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2022-12-05 22:17:29,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 115 transitions, 1270 flow [2022-12-05 22:17:29,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 22:17:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 22:17:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2022-12-05 22:17:29,301 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5656565656565656 [2022-12-05 22:17:29,301 INFO L175 Difference]: Start difference. First operand has 111 places, 110 transitions, 1056 flow. Second operand 3 states and 56 transitions. [2022-12-05 22:17:29,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 115 transitions, 1270 flow [2022-12-05 22:17:29,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 115 transitions, 1210 flow, removed 26 selfloop flow, removed 4 redundant places. [2022-12-05 22:17:29,675 INFO L231 Difference]: Finished difference. Result has 108 places, 100 transitions, 909 flow [2022-12-05 22:17:29,676 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=909, PETRI_PLACES=108, PETRI_TRANSITIONS=100} [2022-12-05 22:17:29,676 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2022-12-05 22:17:29,676 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 100 transitions, 909 flow [2022-12-05 22:17:29,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:29,676 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:29,676 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:29,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 22:17:29,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:17:29,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:29,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1816416626, now seen corresponding path program 7 times [2022-12-05 22:17:29,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:29,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079317500] [2022-12-05 22:17:29,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:29,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:30,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:30,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079317500] [2022-12-05 22:17:30,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079317500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:30,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:30,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-05 22:17:30,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991577360] [2022-12-05 22:17:30,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:30,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 22:17:30,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:30,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 22:17:30,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-05 22:17:30,794 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 22:17:30,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 100 transitions, 909 flow. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:30,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:30,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 22:17:30,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:35,270 INFO L130 PetriNetUnfolder]: 18607/32245 cut-off events. [2022-12-05 22:17:35,270 INFO L131 PetriNetUnfolder]: For 216574/216574 co-relation queries the response was YES. [2022-12-05 22:17:35,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156239 conditions, 32245 events. 18607/32245 cut-off events. For 216574/216574 co-relation queries the response was YES. Maximal size of possible extension queue 1459. Compared 273450 event pairs, 2699 based on Foata normal form. 1/32246 useless extension candidates. Maximal degree in co-relation 146091. Up to 8192 conditions per place. [2022-12-05 22:17:35,574 INFO L137 encePairwiseOnDemand]: 20/33 looper letters, 365 selfloop transitions, 53 changer transitions 9/427 dead transitions. [2022-12-05 22:17:35,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 427 transitions, 4357 flow [2022-12-05 22:17:35,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-05 22:17:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-05 22:17:35,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 215 transitions. [2022-12-05 22:17:35,577 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4653679653679654 [2022-12-05 22:17:35,577 INFO L175 Difference]: Start difference. First operand has 108 places, 100 transitions, 909 flow. Second operand 14 states and 215 transitions. [2022-12-05 22:17:35,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 427 transitions, 4357 flow [2022-12-05 22:17:37,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 427 transitions, 4315 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:37,207 INFO L231 Difference]: Finished difference. Result has 131 places, 138 transitions, 1584 flow [2022-12-05 22:17:37,207 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1584, PETRI_PLACES=131, PETRI_TRANSITIONS=138} [2022-12-05 22:17:37,207 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 85 predicate places. [2022-12-05 22:17:37,208 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 138 transitions, 1584 flow [2022-12-05 22:17:37,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:37,208 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:37,208 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:37,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 22:17:37,208 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:17:37,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1091015524, now seen corresponding path program 8 times [2022-12-05 22:17:37,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:37,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939094171] [2022-12-05 22:17:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:37,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:37,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:37,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939094171] [2022-12-05 22:17:37,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939094171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:37,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:37,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 22:17:37,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376843535] [2022-12-05 22:17:37,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:37,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 22:17:37,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:37,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 22:17:37,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 22:17:37,314 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2022-12-05 22:17:37,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 138 transitions, 1584 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:37,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:37,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2022-12-05 22:17:37,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:40,252 INFO L130 PetriNetUnfolder]: 14683/26405 cut-off events. [2022-12-05 22:17:40,253 INFO L131 PetriNetUnfolder]: For 278006/278176 co-relation queries the response was YES. [2022-12-05 22:17:40,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149425 conditions, 26405 events. 14683/26405 cut-off events. For 278006/278176 co-relation queries the response was YES. Maximal size of possible extension queue 1387. Compared 229761 event pairs, 7262 based on Foata normal form. 85/26433 useless extension candidates. Maximal degree in co-relation 148598. Up to 26094 conditions per place. [2022-12-05 22:17:40,542 INFO L137 encePairwiseOnDemand]: 30/33 looper letters, 139 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2022-12-05 22:17:40,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 148 transitions, 1931 flow [2022-12-05 22:17:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 22:17:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 22:17:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2022-12-05 22:17:40,543 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5656565656565656 [2022-12-05 22:17:40,543 INFO L175 Difference]: Start difference. First operand has 131 places, 138 transitions, 1584 flow. Second operand 3 states and 56 transitions. [2022-12-05 22:17:40,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 148 transitions, 1931 flow [2022-12-05 22:17:42,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 148 transitions, 1839 flow, removed 40 selfloop flow, removed 4 redundant places. [2022-12-05 22:17:42,026 INFO L231 Difference]: Finished difference. Result has 129 places, 130 transitions, 1409 flow [2022-12-05 22:17:42,026 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1409, PETRI_PLACES=129, PETRI_TRANSITIONS=130} [2022-12-05 22:17:42,027 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 83 predicate places. [2022-12-05 22:17:42,027 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 130 transitions, 1409 flow [2022-12-05 22:17:42,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:42,027 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:42,027 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:42,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 22:17:42,027 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:17:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash 645049932, now seen corresponding path program 9 times [2022-12-05 22:17:42,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:42,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69700504] [2022-12-05 22:17:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:42,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:43,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:43,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69700504] [2022-12-05 22:17:43,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69700504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:43,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:43,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-05 22:17:43,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884321437] [2022-12-05 22:17:43,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:43,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 22:17:43,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:43,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 22:17:43,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-05 22:17:43,037 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 22:17:43,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 130 transitions, 1409 flow. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:43,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:43,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 22:17:43,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:48,328 INFO L130 PetriNetUnfolder]: 20627/38655 cut-off events. [2022-12-05 22:17:48,328 INFO L131 PetriNetUnfolder]: For 332823/332823 co-relation queries the response was YES. [2022-12-05 22:17:48,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202534 conditions, 38655 events. 20627/38655 cut-off events. For 332823/332823 co-relation queries the response was YES. Maximal size of possible extension queue 2048. Compared 372868 event pairs, 4981 based on Foata normal form. 1/38656 useless extension candidates. Maximal degree in co-relation 192165. Up to 10985 conditions per place. [2022-12-05 22:17:48,718 INFO L137 encePairwiseOnDemand]: 20/33 looper letters, 363 selfloop transitions, 60 changer transitions 9/432 dead transitions. [2022-12-05 22:17:48,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 432 transitions, 4808 flow [2022-12-05 22:17:48,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-05 22:17:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-05 22:17:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 208 transitions. [2022-12-05 22:17:48,720 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45021645021645024 [2022-12-05 22:17:48,720 INFO L175 Difference]: Start difference. First operand has 129 places, 130 transitions, 1409 flow. Second operand 14 states and 208 transitions. [2022-12-05 22:17:48,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 432 transitions, 4808 flow [2022-12-05 22:17:50,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 432 transitions, 4770 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:51,003 INFO L231 Difference]: Finished difference. Result has 152 places, 173 transitions, 2265 flow [2022-12-05 22:17:51,003 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2265, PETRI_PLACES=152, PETRI_TRANSITIONS=173} [2022-12-05 22:17:51,003 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 106 predicate places. [2022-12-05 22:17:51,004 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 173 transitions, 2265 flow [2022-12-05 22:17:51,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:51,004 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:51,004 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:51,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 22:17:51,004 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:17:51,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:51,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1042325082, now seen corresponding path program 10 times [2022-12-05 22:17:51,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:51,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378222068] [2022-12-05 22:17:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:51,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:51,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:51,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378222068] [2022-12-05 22:17:51,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378222068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:51,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:51,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-05 22:17:51,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905993331] [2022-12-05 22:17:51,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:51,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 22:17:51,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:51,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 22:17:51,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-12-05 22:17:51,929 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 22:17:51,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 173 transitions, 2265 flow. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:51,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:51,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 22:17:51,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:18:00,287 INFO L130 PetriNetUnfolder]: 27955/55699 cut-off events. [2022-12-05 22:18:00,288 INFO L131 PetriNetUnfolder]: For 703643/703643 co-relation queries the response was YES. [2022-12-05 22:18:00,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321596 conditions, 55699 events. 27955/55699 cut-off events. For 703643/703643 co-relation queries the response was YES. Maximal size of possible extension queue 3320. Compared 603421 event pairs, 6631 based on Foata normal form. 1/55700 useless extension candidates. Maximal degree in co-relation 319012. Up to 16222 conditions per place. [2022-12-05 22:18:00,996 INFO L137 encePairwiseOnDemand]: 20/33 looper letters, 459 selfloop transitions, 94 changer transitions 10/563 dead transitions. [2022-12-05 22:18:00,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 563 transitions, 7607 flow [2022-12-05 22:18:00,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-05 22:18:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-05 22:18:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 221 transitions. [2022-12-05 22:18:00,998 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.47835497835497837 [2022-12-05 22:18:00,998 INFO L175 Difference]: Start difference. First operand has 152 places, 173 transitions, 2265 flow. Second operand 14 states and 221 transitions. [2022-12-05 22:18:00,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 563 transitions, 7607 flow [2022-12-05 22:18:07,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 563 transitions, 7328 flow, removed 125 selfloop flow, removed 3 redundant places. [2022-12-05 22:18:07,264 INFO L231 Difference]: Finished difference. Result has 173 places, 238 transitions, 3494 flow [2022-12-05 22:18:07,265 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3494, PETRI_PLACES=173, PETRI_TRANSITIONS=238} [2022-12-05 22:18:07,265 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 127 predicate places. [2022-12-05 22:18:07,265 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 238 transitions, 3494 flow [2022-12-05 22:18:07,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:18:07,265 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:18:07,266 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:18:07,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 22:18:07,266 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:18:07,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:18:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1625364642, now seen corresponding path program 11 times [2022-12-05 22:18:07,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:18:07,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895297966] [2022-12-05 22:18:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:18:07,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:18:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:18:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:18:08,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:18:08,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895297966] [2022-12-05 22:18:08,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895297966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:18:08,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:18:08,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-05 22:18:08,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396767654] [2022-12-05 22:18:08,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:18:08,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 22:18:08,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:18:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 22:18:08,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-12-05 22:18:08,207 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 22:18:08,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 238 transitions, 3494 flow. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:18:08,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:18:08,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 22:18:08,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:18:21,312 INFO L130 PetriNetUnfolder]: 35556/72566 cut-off events. [2022-12-05 22:18:21,313 INFO L131 PetriNetUnfolder]: For 1067472/1067472 co-relation queries the response was YES. [2022-12-05 22:18:22,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437992 conditions, 72566 events. 35556/72566 cut-off events. For 1067472/1067472 co-relation queries the response was YES. Maximal size of possible extension queue 4460. Compared 838634 event pairs, 9071 based on Foata normal form. 1/72567 useless extension candidates. Maximal degree in co-relation 434426. Up to 24100 conditions per place. [2022-12-05 22:18:22,478 INFO L137 encePairwiseOnDemand]: 20/33 looper letters, 601 selfloop transitions, 110 changer transitions 9/720 dead transitions. [2022-12-05 22:18:22,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 720 transitions, 10697 flow [2022-12-05 22:18:22,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-05 22:18:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-05 22:18:22,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 225 transitions. [2022-12-05 22:18:22,479 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.487012987012987 [2022-12-05 22:18:22,480 INFO L175 Difference]: Start difference. First operand has 173 places, 238 transitions, 3494 flow. Second operand 14 states and 225 transitions. [2022-12-05 22:18:22,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 720 transitions, 10697 flow [2022-12-05 22:18:33,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 720 transitions, 10552 flow, removed 62 selfloop flow, removed 3 redundant places. [2022-12-05 22:18:33,776 INFO L231 Difference]: Finished difference. Result has 194 places, 311 transitions, 5124 flow [2022-12-05 22:18:33,777 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5124, PETRI_PLACES=194, PETRI_TRANSITIONS=311} [2022-12-05 22:18:33,777 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 148 predicate places. [2022-12-05 22:18:33,777 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 311 transitions, 5124 flow [2022-12-05 22:18:33,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:18:33,777 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:18:33,777 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:18:33,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 22:18:33,777 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:18:33,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:18:33,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1514113050, now seen corresponding path program 12 times [2022-12-05 22:18:33,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:18:33,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874366829] [2022-12-05 22:18:33,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:18:33,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:18:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:18:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:18:34,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:18:34,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874366829] [2022-12-05 22:18:34,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874366829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:18:34,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:18:34,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-05 22:18:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268169748] [2022-12-05 22:18:34,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:18:34,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 22:18:34,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:18:34,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 22:18:34,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-05 22:18:34,652 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 22:18:34,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 311 transitions, 5124 flow. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:18:34,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:18:34,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 22:18:34,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:18:59,205 INFO L130 PetriNetUnfolder]: 61758/129616 cut-off events. [2022-12-05 22:18:59,206 INFO L131 PetriNetUnfolder]: For 2378631/2378631 co-relation queries the response was YES. [2022-12-05 22:19:01,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843289 conditions, 129616 events. 61758/129616 cut-off events. For 2378631/2378631 co-relation queries the response was YES. Maximal size of possible extension queue 8463. Compared 1649545 event pairs, 15979 based on Foata normal form. 1/129617 useless extension candidates. Maximal degree in co-relation 836398. Up to 42486 conditions per place. [2022-12-05 22:19:01,464 INFO L137 encePairwiseOnDemand]: 20/33 looper letters, 682 selfloop transitions, 173 changer transitions 10/865 dead transitions. [2022-12-05 22:19:01,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 865 transitions, 15004 flow [2022-12-05 22:19:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-05 22:19:01,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-05 22:19:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 201 transitions. [2022-12-05 22:19:01,466 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2022-12-05 22:19:01,466 INFO L175 Difference]: Start difference. First operand has 194 places, 311 transitions, 5124 flow. Second operand 14 states and 201 transitions. [2022-12-05 22:19:01,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 865 transitions, 15004 flow [2022-12-05 22:19:39,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 865 transitions, 14449 flow, removed 272 selfloop flow, removed 2 redundant places. [2022-12-05 22:19:39,226 INFO L231 Difference]: Finished difference. Result has 216 places, 414 transitions, 7541 flow [2022-12-05 22:19:39,226 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4878, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7541, PETRI_PLACES=216, PETRI_TRANSITIONS=414} [2022-12-05 22:19:39,227 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 170 predicate places. [2022-12-05 22:19:39,227 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 414 transitions, 7541 flow [2022-12-05 22:19:39,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:19:39,227 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:19:39,227 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:19:39,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 22:19:39,227 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 22:19:39,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:19:39,228 INFO L85 PathProgramCache]: Analyzing trace with hash -725347898, now seen corresponding path program 13 times [2022-12-05 22:19:39,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:19:39,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610566512] [2022-12-05 22:19:39,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:19:39,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:19:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:19:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:19:40,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:19:40,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610566512] [2022-12-05 22:19:40,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610566512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:19:40,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:19:40,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-05 22:19:40,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918763276] [2022-12-05 22:19:40,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:19:40,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 22:19:40,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:19:40,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 22:19:40,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-12-05 22:19:40,053 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-05 22:19:40,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 414 transitions, 7541 flow. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:19:40,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:19:40,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-05 22:19:40,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand