/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 17:40:03,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 17:40:03,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 17:40:03,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 17:40:03,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 17:40:03,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 17:40:03,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 17:40:03,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 17:40:03,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 17:40:03,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 17:40:03,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 17:40:03,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 17:40:03,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 17:40:03,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 17:40:03,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 17:40:03,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 17:40:03,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 17:40:03,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 17:40:03,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 17:40:03,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 17:40:03,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 17:40:03,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 17:40:03,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 17:40:03,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 17:40:03,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 17:40:03,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 17:40:03,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 17:40:03,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 17:40:03,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 17:40:03,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 17:40:03,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 17:40:03,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 17:40:03,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 17:40:03,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 17:40:03,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 17:40:03,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 17:40:03,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 17:40:03,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 17:40:03,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 17:40:03,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 17:40:03,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 17:40:03,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 17:40:03,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 17:40:03,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 17:40:03,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 17:40:03,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 17:40:03,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 17:40:03,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 17:40:03,350 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 17:40:03,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 17:40:03,350 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 17:40:03,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 17:40:03,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 17:40:03,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 17:40:03,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 17:40:03,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 17:40:03,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 17:40:03,352 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 17:40:03,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 17:40:03,352 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 17:40:03,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 17:40:03,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 17:40:03,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 17:40:03,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 17:40:03,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 17:40:03,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:40:03,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 17:40:03,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 17:40:03,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 17:40:03,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 17:40:03,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 17:40:03,353 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 17:40:03,354 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 17:40:03,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 17:40:03,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 17:40:03,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 17:40:03,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 17:40:03,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 17:40:03,632 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 17:40:03,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2022-12-06 17:40:04,443 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 17:40:04,634 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 17:40:04,634 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2022-12-06 17:40:04,638 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26fa25b2a/1168c719bdb2492eb0a5b369b99d82e2/FLAG9cb628a6e [2022-12-06 17:40:04,648 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26fa25b2a/1168c719bdb2492eb0a5b369b99d82e2 [2022-12-06 17:40:04,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 17:40:04,654 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 17:40:04,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 17:40:04,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 17:40:04,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 17:40:04,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:04,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e73b597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04, skipping insertion in model container [2022-12-06 17:40:04,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:04,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 17:40:04,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 17:40:04,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,850 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/parallel-ticket-6.wvr.c[4400,4413] [2022-12-06 17:40:04,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:40:04,865 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 17:40:04,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,887 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,887 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,894 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,894 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,895 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,896 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,897 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,897 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,897 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,898 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,898 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,899 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,899 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,903 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:40:04,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:40:04,913 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/parallel-ticket-6.wvr.c[4400,4413] [2022-12-06 17:40:04,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:40:04,925 INFO L208 MainTranslator]: Completed translation [2022-12-06 17:40:04,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04 WrapperNode [2022-12-06 17:40:04,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 17:40:04,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 17:40:04,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 17:40:04,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 17:40:04,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:04,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:04,987 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 278 [2022-12-06 17:40:04,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 17:40:04,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 17:40:04,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 17:40:04,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 17:40:05,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:05,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:05,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:05,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:05,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:05,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:05,032 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:05,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:05,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 17:40:05,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 17:40:05,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 17:40:05,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 17:40:05,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04" (1/1) ... [2022-12-06 17:40:05,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:40:05,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:40:05,065 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) [2022-12-06 17:40:05,085 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 [2022-12-06 17:40:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 17:40:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 17:40:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 17:40:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 17:40:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 17:40:05,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 17:40:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 17:40:05,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 17:40:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 17:40:05,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 17:40:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-06 17:40:05,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-06 17:40:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 17:40:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-06 17:40:05,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-06 17:40:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-06 17:40:05,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-06 17:40:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 17:40:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 17:40:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 17:40:05,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 17:40:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 17:40:05,102 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 17:40:05,221 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 17:40:05,223 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 17:40:05,527 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 17:40:05,593 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 17:40:05,594 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 17:40:05,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:40:05 BoogieIcfgContainer [2022-12-06 17:40:05,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 17:40:05,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 17:40:05,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 17:40:05,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 17:40:05,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:40:04" (1/3) ... [2022-12-06 17:40:05,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9b5057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:40:05, skipping insertion in model container [2022-12-06 17:40:05,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:40:04" (2/3) ... [2022-12-06 17:40:05,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9b5057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:40:05, skipping insertion in model container [2022-12-06 17:40:05,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:40:05" (3/3) ... [2022-12-06 17:40:05,601 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2022-12-06 17:40:05,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 17:40:05,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 17:40:05,614 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 17:40:05,666 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-12-06 17:40:05,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 181 transitions, 410 flow [2022-12-06 17:40:05,743 INFO L130 PetriNetUnfolder]: 2/175 cut-off events. [2022-12-06 17:40:05,744 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 17:40:05,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 175 events. 2/175 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2022-12-06 17:40:05,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 181 transitions, 410 flow [2022-12-06 17:40:05,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 159 transitions, 354 flow [2022-12-06 17:40:05,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 17:40:05,761 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;@71ad3058, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 17:40:05,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-06 17:40:05,809 INFO L130 PetriNetUnfolder]: 2/158 cut-off events. [2022-12-06 17:40:05,810 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 17:40:05,810 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:40:05,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:40:05,811 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 4 more)] === [2022-12-06 17:40:05,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:40:05,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1194301909, now seen corresponding path program 1 times [2022-12-06 17:40:05,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:40:05,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753397601] [2022-12-06 17:40:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:40:05,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:40:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:40:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:40:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:40:07,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753397601] [2022-12-06 17:40:07,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753397601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:40:07,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:40:07,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-06 17:40:07,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114412957] [2022-12-06 17:40:07,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:40:07,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-06 17:40:07,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:40:07,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-06 17:40:07,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-06 17:40:07,891 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 181 [2022-12-06 17:40:07,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 159 transitions, 354 flow. Second operand has 12 states, 12 states have (on average 131.08333333333334) internal successors, (1573), 12 states have internal predecessors, (1573), 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) [2022-12-06 17:40:07,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:40:07,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 181 [2022-12-06 17:40:07,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:40:25,155 INFO L130 PetriNetUnfolder]: 156365/230978 cut-off events. [2022-12-06 17:40:25,155 INFO L131 PetriNetUnfolder]: For 29374/29374 co-relation queries the response was YES. [2022-12-06 17:40:26,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449903 conditions, 230978 events. 156365/230978 cut-off events. For 29374/29374 co-relation queries the response was YES. Maximal size of possible extension queue 7386. Compared 1962616 event pairs, 69064 based on Foata normal form. 3/230187 useless extension candidates. Maximal degree in co-relation 360861. Up to 76972 conditions per place. [2022-12-06 17:40:26,685 INFO L137 encePairwiseOnDemand]: 162/181 looper letters, 103 selfloop transitions, 17 changer transitions 38/264 dead transitions. [2022-12-06 17:40:26,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 264 transitions, 949 flow [2022-12-06 17:40:26,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-06 17:40:26,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-06 17:40:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1686 transitions. [2022-12-06 17:40:26,698 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7762430939226519 [2022-12-06 17:40:26,701 INFO L294 CegarLoopForPetriNet]: 176 programPoint places, 11 predicate places. [2022-12-06 17:40:26,701 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 264 transitions, 949 flow [2022-12-06 17:40:26,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.08333333333334) internal successors, (1573), 12 states have internal predecessors, (1573), 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) [2022-12-06 17:40:26,702 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:40:26,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:40:26,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 17:40:26,703 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 4 more)] === [2022-12-06 17:40:26,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:40:26,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1551386851, now seen corresponding path program 2 times [2022-12-06 17:40:26,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:40:26,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620978361] [2022-12-06 17:40:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:40:26,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:40:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:40:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:40:27,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:40:27,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620978361] [2022-12-06 17:40:27,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620978361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:40:27,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:40:27,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-06 17:40:27,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714098789] [2022-12-06 17:40:27,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:40:27,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-06 17:40:27,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:40:27,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-06 17:40:27,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-12-06 17:40:27,734 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 181 [2022-12-06 17:40:27,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 264 transitions, 949 flow. Second operand has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 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) [2022-12-06 17:40:27,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:40:27,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 181 [2022-12-06 17:40:27,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand