/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/parallel-bakery-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 21:16:42,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 21:16:42,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 21:16:42,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 21:16:42,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 21:16:42,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 21:16:42,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 21:16:42,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 21:16:42,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 21:16:42,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 21:16:42,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 21:16:42,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 21:16:42,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 21:16:42,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 21:16:42,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 21:16:42,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 21:16:42,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 21:16:42,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 21:16:42,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 21:16:42,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 21:16:42,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 21:16:42,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 21:16:42,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 21:16:42,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 21:16:42,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 21:16:42,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 21:16:42,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 21:16:42,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 21:16:42,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 21:16:42,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 21:16:42,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 21:16:42,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 21:16:42,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 21:16:42,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 21:16:42,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 21:16:42,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 21:16:42,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 21:16:42,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 21:16:42,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 21:16:42,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 21:16:42,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 21:16:42,343 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 21:16:42,369 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 21:16:42,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 21:16:42,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 21:16:42,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 21:16:42,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 21:16:42,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 21:16:42,372 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 21:16:42,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 21:16:42,372 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 21:16:42,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 21:16:42,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 21:16:42,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 21:16:42,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 21:16:42,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 21:16:42,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 21:16:42,373 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 21:16:42,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 21:16:42,373 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 21:16:42,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 21:16:42,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 21:16:42,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 21:16:42,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 21:16:42,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 21:16:42,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:16:42,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 21:16:42,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 21:16:42,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 21:16:42,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 21:16:42,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 21:16:42,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 21:16:42,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 21:16:42,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 21:16:42,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 21:16:42,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 21:16:42,638 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 21:16:42,638 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 21:16:42,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2022-12-05 21:16:43,637 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 21:16:43,794 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 21:16:43,795 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2022-12-05 21:16:43,799 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a103352/bb13f9367f374529bfe72c5795e1c393/FLAG1dd529a4a [2022-12-05 21:16:43,811 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a103352/bb13f9367f374529bfe72c5795e1c393 [2022-12-05 21:16:43,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 21:16:43,813 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 21:16:43,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 21:16:43,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 21:16:43,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 21:16:43,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:16:43" (1/1) ... [2022-12-05 21:16:43,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1893362e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:43, skipping insertion in model container [2022-12-05 21:16:43,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:16:43" (1/1) ... [2022-12-05 21:16:43,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 21:16:43,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 21:16:43,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,929 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,929 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,931 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,933 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,934 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,934 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,938 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,938 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,949 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,949 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,949 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,960 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-bakery-2.wvr.c[3512,3525] [2022-12-05 21:16:43,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:16:43,969 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 21:16:43,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,981 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,981 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,981 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,981 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,982 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,982 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,982 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,982 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,982 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,983 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,984 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,985 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,985 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,985 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,986 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,986 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,986 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,987 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,987 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,988 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,988 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,988 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,988 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,998 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:43,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:16:43,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:16:44,005 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-bakery-2.wvr.c[3512,3525] [2022-12-05 21:16:44,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:16:44,014 INFO L208 MainTranslator]: Completed translation [2022-12-05 21:16:44,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44 WrapperNode [2022-12-05 21:16:44,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 21:16:44,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 21:16:44,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 21:16:44,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 21:16:44,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44" (1/1) ... [2022-12-05 21:16:44,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44" (1/1) ... [2022-12-05 21:16:44,063 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 148 [2022-12-05 21:16:44,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 21:16:44,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 21:16:44,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 21:16:44,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 21:16:44,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44" (1/1) ... [2022-12-05 21:16:44,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44" (1/1) ... [2022-12-05 21:16:44,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44" (1/1) ... [2022-12-05 21:16:44,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44" (1/1) ... [2022-12-05 21:16:44,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44" (1/1) ... [2022-12-05 21:16:44,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44" (1/1) ... [2022-12-05 21:16:44,090 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44" (1/1) ... [2022-12-05 21:16:44,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44" (1/1) ... [2022-12-05 21:16:44,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 21:16:44,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 21:16:44,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 21:16:44,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 21:16:44,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44" (1/1) ... [2022-12-05 21:16:44,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:16:44,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:16:44,132 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 21:16:44,155 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 21:16:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 21:16:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 21:16:44,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 21:16:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 21:16:44,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 21:16:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 21:16:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 21:16:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 21:16:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 21:16:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 21:16:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 21:16:44,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 21:16:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 21:16:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 21:16:44,168 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 21:16:44,252 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 21:16:44,253 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 21:16:44,461 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 21:16:44,501 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 21:16:44,502 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 21:16:44,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:16:44 BoogieIcfgContainer [2022-12-05 21:16:44,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 21:16:44,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 21:16:44,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 21:16:44,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 21:16:44,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:16:43" (1/3) ... [2022-12-05 21:16:44,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252931f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:16:44, skipping insertion in model container [2022-12-05 21:16:44,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:16:44" (2/3) ... [2022-12-05 21:16:44,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252931f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:16:44, skipping insertion in model container [2022-12-05 21:16:44,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:16:44" (3/3) ... [2022-12-05 21:16:44,508 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2022-12-05 21:16:44,520 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 21:16:44,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 21:16:44,520 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 21:16:44,556 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 21:16:44,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 101 transitions, 218 flow [2022-12-05 21:16:44,622 INFO L130 PetriNetUnfolder]: 2/99 cut-off events. [2022-12-05 21:16:44,622 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 21:16:44,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 2/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2022-12-05 21:16:44,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 101 transitions, 218 flow [2022-12-05 21:16:44,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 91 transitions, 194 flow [2022-12-05 21:16:44,629 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 21:16:44,641 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 91 transitions, 194 flow [2022-12-05 21:16:44,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 91 transitions, 194 flow [2022-12-05 21:16:44,665 INFO L130 PetriNetUnfolder]: 2/91 cut-off events. [2022-12-05 21:16:44,666 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 21:16:44,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 2/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2022-12-05 21:16:44,668 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 91 transitions, 194 flow [2022-12-05 21:16:44,668 INFO L188 LiptonReduction]: Number of co-enabled transitions 572 [2022-12-05 21:16:47,702 INFO L203 LiptonReduction]: Total number of compositions: 68 [2022-12-05 21:16:47,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 21:16:47,717 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;@512d387b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 21:16:47,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-05 21:16:47,721 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2022-12-05 21:16:47,722 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 21:16:47,722 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:16:47,722 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] [2022-12-05 21:16:47,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:16:47,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:16:47,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1970852786, now seen corresponding path program 1 times [2022-12-05 21:16:47,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:16:47,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345455191] [2022-12-05 21:16:47,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:16:47,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:16:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:16:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:16:48,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:16:48,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345455191] [2022-12-05 21:16:48,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345455191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:16:48,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:16:48,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 21:16:48,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049482090] [2022-12-05 21:16:48,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:16:48,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:16:48,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:16:48,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:16:48,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:16:48,234 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-05 21:16:48,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 58 flow. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 21:16:48,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:16:48,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-05 21:16:48,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:16:48,439 INFO L130 PetriNetUnfolder]: 217/431 cut-off events. [2022-12-05 21:16:48,439 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-05 21:16:48,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903 conditions, 431 events. 217/431 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1561 event pairs, 91 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 756. Up to 152 conditions per place. [2022-12-05 21:16:48,442 INFO L137 encePairwiseOnDemand]: 17/23 looper letters, 48 selfloop transitions, 7 changer transitions 14/69 dead transitions. [2022-12-05 21:16:48,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 69 transitions, 309 flow [2022-12-05 21:16:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:16:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:16:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 70 transitions. [2022-12-05 21:16:48,450 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3804347826086957 [2022-12-05 21:16:48,451 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 58 flow. Second operand 8 states and 70 transitions. [2022-12-05 21:16:48,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 69 transitions, 309 flow [2022-12-05 21:16:48,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 69 transitions, 287 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 21:16:48,455 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 88 flow [2022-12-05 21:16:48,457 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2022-12-05 21:16:48,458 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2022-12-05 21:16:48,459 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 88 flow [2022-12-05 21:16:48,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 21:16:48,459 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:16:48,459 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] [2022-12-05 21:16:48,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 21:16:48,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:16:48,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:16:48,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1939590356, now seen corresponding path program 2 times [2022-12-05 21:16:48,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:16:48,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127417192] [2022-12-05 21:16:48,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:16:48,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:16:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:16:48,574 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 21:16:48,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:16:48,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127417192] [2022-12-05 21:16:48,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127417192] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:16:48,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:16:48,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 21:16:48,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959002277] [2022-12-05 21:16:48,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:16:48,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:16:48,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:16:48,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:16:48,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:16:48,577 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-05 21:16:48,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 88 flow. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 21:16:48,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:16:48,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-05 21:16:48,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:16:48,742 INFO L130 PetriNetUnfolder]: 203/399 cut-off events. [2022-12-05 21:16:48,743 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-05 21:16:48,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 399 events. 203/399 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1407 event pairs, 77 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 906. Up to 148 conditions per place. [2022-12-05 21:16:48,745 INFO L137 encePairwiseOnDemand]: 17/23 looper letters, 35 selfloop transitions, 6 changer transitions 26/67 dead transitions. [2022-12-05 21:16:48,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 67 transitions, 315 flow [2022-12-05 21:16:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:16:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:16:48,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 67 transitions. [2022-12-05 21:16:48,746 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3641304347826087 [2022-12-05 21:16:48,746 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 88 flow. Second operand 8 states and 67 transitions. [2022-12-05 21:16:48,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 67 transitions, 315 flow [2022-12-05 21:16:48,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 67 transitions, 311 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-05 21:16:48,748 INFO L231 Difference]: Finished difference. Result has 41 places, 25 transitions, 87 flow [2022-12-05 21:16:48,748 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=87, PETRI_PLACES=41, PETRI_TRANSITIONS=25} [2022-12-05 21:16:48,749 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2022-12-05 21:16:48,749 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 25 transitions, 87 flow [2022-12-05 21:16:48,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 21:16:48,749 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:16:48,749 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] [2022-12-05 21:16:48,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 21:16:48,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:16:48,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:16:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash -2113668486, now seen corresponding path program 3 times [2022-12-05 21:16:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:16:48,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617982947] [2022-12-05 21:16:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:16:48,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:16:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:16:48,959 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 21:16:48,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:16:48,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617982947] [2022-12-05 21:16:48,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617982947] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:16:48,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:16:48,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 21:16:48,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373485921] [2022-12-05 21:16:48,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:16:48,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 21:16:48,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:16:48,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 21:16:48,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 21:16:48,961 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2022-12-05 21:16:48,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 25 transitions, 87 flow. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 21:16:48,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:16:48,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2022-12-05 21:16:48,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:16:49,072 INFO L130 PetriNetUnfolder]: 91/234 cut-off events. [2022-12-05 21:16:49,072 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-05 21:16:49,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 234 events. 91/234 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 853 event pairs, 23 based on Foata normal form. 6/238 useless extension candidates. Maximal degree in co-relation 498. Up to 97 conditions per place. [2022-12-05 21:16:49,074 INFO L137 encePairwiseOnDemand]: 17/23 looper letters, 25 selfloop transitions, 4 changer transitions 12/47 dead transitions. [2022-12-05 21:16:49,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 219 flow [2022-12-05 21:16:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 21:16:49,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 21:16:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2022-12-05 21:16:49,076 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2022-12-05 21:16:49,076 INFO L175 Difference]: Start difference. First operand has 41 places, 25 transitions, 87 flow. Second operand 6 states and 66 transitions. [2022-12-05 21:16:49,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 219 flow [2022-12-05 21:16:49,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 196 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-12-05 21:16:49,077 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 87 flow [2022-12-05 21:16:49,077 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2022-12-05 21:16:49,078 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2022-12-05 21:16:49,078 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 87 flow [2022-12-05 21:16:49,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 21:16:49,078 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:16:49,078 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] [2022-12-05 21:16:49,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 21:16:49,079 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:16:49,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:16:49,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1644674620, now seen corresponding path program 4 times [2022-12-05 21:16:49,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:16:49,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167957785] [2022-12-05 21:16:49,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:16:49,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:16:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:16:49,282 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 21:16:49,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:16:49,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167957785] [2022-12-05 21:16:49,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167957785] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:16:49,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:16:49,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:16:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440903435] [2022-12-05 21:16:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:16:49,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:16:49,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:16:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:16:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:16:49,285 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2022-12-05 21:16:49,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 21:16:49,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:16:49,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2022-12-05 21:16:49,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:16:49,340 INFO L130 PetriNetUnfolder]: 83/228 cut-off events. [2022-12-05 21:16:49,341 INFO L131 PetriNetUnfolder]: For 78/82 co-relation queries the response was YES. [2022-12-05 21:16:49,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 228 events. 83/228 cut-off events. For 78/82 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 855 event pairs, 23 based on Foata normal form. 8/236 useless extension candidates. Maximal degree in co-relation 380. Up to 111 conditions per place. [2022-12-05 21:16:49,342 INFO L137 encePairwiseOnDemand]: 16/23 looper letters, 26 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2022-12-05 21:16:49,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 194 flow [2022-12-05 21:16:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:16:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:16:49,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2022-12-05 21:16:49,344 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.46956521739130436 [2022-12-05 21:16:49,345 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 87 flow. Second operand 5 states and 54 transitions. [2022-12-05 21:16:49,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 194 flow [2022-12-05 21:16:49,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 183 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 21:16:49,348 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 136 flow [2022-12-05 21:16:49,348 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2022-12-05 21:16:49,349 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2022-12-05 21:16:49,349 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 136 flow [2022-12-05 21:16:49,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 21:16:49,350 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:16:49,350 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] [2022-12-05 21:16:49,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 21:16:49,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:16:49,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:16:49,350 INFO L85 PathProgramCache]: Analyzing trace with hash 39332082, now seen corresponding path program 5 times [2022-12-05 21:16:49,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:16:49,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655539958] [2022-12-05 21:16:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:16:49,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:16:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:16:49,420 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 21:16:49,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:16:49,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655539958] [2022-12-05 21:16:49,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655539958] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:16:49,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:16:49,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:16:49,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134703320] [2022-12-05 21:16:49,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:16:49,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:16:49,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:16:49,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:16:49,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:16:49,422 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2022-12-05 21:16:49,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:16:49,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:16:49,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2022-12-05 21:16:49,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:16:49,454 INFO L130 PetriNetUnfolder]: 66/191 cut-off events. [2022-12-05 21:16:49,455 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-12-05 21:16:49,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 191 events. 66/191 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 696 event pairs, 50 based on Foata normal form. 4/195 useless extension candidates. Maximal degree in co-relation 364. Up to 142 conditions per place. [2022-12-05 21:16:49,457 INFO L137 encePairwiseOnDemand]: 20/23 looper letters, 23 selfloop transitions, 4 changer transitions 2/35 dead transitions. [2022-12-05 21:16:49,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 196 flow [2022-12-05 21:16:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:16:49,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:16:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2022-12-05 21:16:49,458 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2022-12-05 21:16:49,458 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 136 flow. Second operand 3 states and 37 transitions. [2022-12-05 21:16:49,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 196 flow [2022-12-05 21:16:49,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 189 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-05 21:16:49,460 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 123 flow [2022-12-05 21:16:49,460 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2022-12-05 21:16:49,462 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2022-12-05 21:16:49,462 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 123 flow [2022-12-05 21:16:49,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:16:49,462 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:16:49,462 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] [2022-12-05 21:16:49,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 21:16:49,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:16:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:16:49,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1087461380, now seen corresponding path program 6 times [2022-12-05 21:16:49,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:16:49,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303550469] [2022-12-05 21:16:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:16:49,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:16:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:16:49,545 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 21:16:49,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:16:49,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303550469] [2022-12-05 21:16:49,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303550469] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:16:49,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:16:49,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:16:49,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787179216] [2022-12-05 21:16:49,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:16:49,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:16:49,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:16:49,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:16:49,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:16:49,547 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2022-12-05 21:16:49,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:16:49,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:16:49,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2022-12-05 21:16:49,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:16:49,587 INFO L130 PetriNetUnfolder]: 50/151 cut-off events. [2022-12-05 21:16:49,587 INFO L131 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2022-12-05 21:16:49,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 151 events. 50/151 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 460 event pairs, 39 based on Foata normal form. 2/153 useless extension candidates. Maximal degree in co-relation 296. Up to 123 conditions per place. [2022-12-05 21:16:49,588 INFO L137 encePairwiseOnDemand]: 20/23 looper letters, 22 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2022-12-05 21:16:49,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 31 transitions, 182 flow [2022-12-05 21:16:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:16:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:16:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2022-12-05 21:16:49,593 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2022-12-05 21:16:49,593 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 123 flow. Second operand 3 states and 35 transitions. [2022-12-05 21:16:49,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 31 transitions, 182 flow [2022-12-05 21:16:49,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 31 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 21:16:49,595 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 126 flow [2022-12-05 21:16:49,596 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2022-12-05 21:16:49,598 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2022-12-05 21:16:49,598 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 126 flow [2022-12-05 21:16:49,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:16:49,598 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:16:49,598 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] [2022-12-05 21:16:49,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 21:16:49,598 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:16:49,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:16:49,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1101529076, now seen corresponding path program 7 times [2022-12-05 21:16:49,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:16:49,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969097913] [2022-12-05 21:16:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:16:49,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:16:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:16:49,741 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 21:16:49,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:16:49,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969097913] [2022-12-05 21:16:49,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969097913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:16:49,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:16:49,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:16:49,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192817246] [2022-12-05 21:16:49,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:16:49,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:16:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:16:49,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:16:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:16:49,743 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2022-12-05 21:16:49,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 21:16:49,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:16:49,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2022-12-05 21:16:49,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:16:49,794 INFO L130 PetriNetUnfolder]: 58/175 cut-off events. [2022-12-05 21:16:49,794 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-12-05 21:16:49,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 175 events. 58/175 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 588 event pairs, 27 based on Foata normal form. 6/181 useless extension candidates. Maximal degree in co-relation 356. Up to 109 conditions per place. [2022-12-05 21:16:49,795 INFO L137 encePairwiseOnDemand]: 19/23 looper letters, 19 selfloop transitions, 2 changer transitions 8/35 dead transitions. [2022-12-05 21:16:49,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 35 transitions, 200 flow [2022-12-05 21:16:49,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:16:49,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:16:49,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2022-12-05 21:16:49,796 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4260869565217391 [2022-12-05 21:16:49,796 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 126 flow. Second operand 5 states and 49 transitions. [2022-12-05 21:16:49,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 35 transitions, 200 flow [2022-12-05 21:16:49,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 35 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 21:16:49,798 INFO L231 Difference]: Finished difference. Result has 46 places, 26 transitions, 109 flow [2022-12-05 21:16:49,798 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=46, PETRI_TRANSITIONS=26} [2022-12-05 21:16:49,798 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2022-12-05 21:16:49,798 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 26 transitions, 109 flow [2022-12-05 21:16:49,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 21:16:49,799 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:16:49,799 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] [2022-12-05 21:16:49,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 21:16:49,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 21:16:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:16:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1157041532, now seen corresponding path program 8 times [2022-12-05 21:16:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:16:49,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343072263] [2022-12-05 21:16:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:16:49,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:16:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:16:49,995 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 21:16:49,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:16:49,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343072263] [2022-12-05 21:16:49,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343072263] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:16:49,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:16:49,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:16:49,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986340153] [2022-12-05 21:16:49,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:16:49,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:16:49,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:16:49,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:16:49,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:16:49,997 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2022-12-05 21:16:49,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 26 transitions, 109 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:16:49,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:16:49,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2022-12-05 21:16:49,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:16:50,028 INFO L130 PetriNetUnfolder]: 21/54 cut-off events. [2022-12-05 21:16:50,028 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-05 21:16:50,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 54 events. 21/54 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 116 event pairs, 1 based on Foata normal form. 6/60 useless extension candidates. Maximal degree in co-relation 170. Up to 26 conditions per place. [2022-12-05 21:16:50,028 INFO L137 encePairwiseOnDemand]: 18/23 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2022-12-05 21:16:50,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 109 flow [2022-12-05 21:16:50,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 21:16:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 21:16:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 42 transitions. [2022-12-05 21:16:50,030 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.30434782608695654 [2022-12-05 21:16:50,030 INFO L175 Difference]: Start difference. First operand has 46 places, 26 transitions, 109 flow. Second operand 6 states and 42 transitions. [2022-12-05 21:16:50,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 109 flow [2022-12-05 21:16:50,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 18 transitions, 85 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-12-05 21:16:50,031 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2022-12-05 21:16:50,031 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2022-12-05 21:16:50,032 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2022-12-05 21:16:50,032 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2022-12-05 21:16:50,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:16:50,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-05 21:16:50,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-05 21:16:50,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-05 21:16:50,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 21:16:50,041 INFO L458 BasicCegarLoop]: Path program histogram: [8] [2022-12-05 21:16:50,043 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 21:16:50,043 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 21:16:50,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:16:50 BasicIcfg [2022-12-05 21:16:50,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 21:16:50,049 INFO L158 Benchmark]: Toolchain (without parser) took 6235.93ms. Allocated memory was 194.0MB in the beginning and 286.3MB in the end (delta: 92.3MB). Free memory was 169.8MB in the beginning and 152.9MB in the end (delta: 16.9MB). Peak memory consumption was 109.7MB. Max. memory is 8.0GB. [2022-12-05 21:16:50,049 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 194.0MB. Free memory is still 171.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 21:16:50,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.90ms. Allocated memory is still 194.0MB. Free memory was 169.8MB in the beginning and 154.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-05 21:16:50,049 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.28ms. Allocated memory is still 194.0MB. Free memory was 154.6MB in the beginning and 152.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 21:16:50,050 INFO L158 Benchmark]: Boogie Preprocessor took 27.46ms. Allocated memory is still 194.0MB. Free memory was 152.5MB in the beginning and 151.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 21:16:50,050 INFO L158 Benchmark]: RCFGBuilder took 410.77ms. Allocated memory is still 194.0MB. Free memory was 151.4MB in the beginning and 133.1MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-05 21:16:50,050 INFO L158 Benchmark]: TraceAbstraction took 5544.14ms. Allocated memory was 194.0MB in the beginning and 286.3MB in the end (delta: 92.3MB). Free memory was 132.5MB in the beginning and 152.9MB in the end (delta: -20.3MB). Peak memory consumption was 73.0MB. Max. memory is 8.0GB. [2022-12-05 21:16:50,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 194.0MB. Free memory is still 171.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.90ms. Allocated memory is still 194.0MB. Free memory was 169.8MB in the beginning and 154.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.28ms. Allocated memory is still 194.0MB. Free memory was 154.6MB in the beginning and 152.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.46ms. Allocated memory is still 194.0MB. Free memory was 152.5MB in the beginning and 151.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 410.77ms. Allocated memory is still 194.0MB. Free memory was 151.4MB in the beginning and 133.1MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 5544.14ms. Allocated memory was 194.0MB in the beginning and 286.3MB in the end (delta: 92.3MB). Free memory was 132.5MB in the beginning and 152.9MB in the end (delta: -20.3MB). Peak memory consumption was 73.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 96 PlacesBefore, 30 PlacesAfterwards, 91 TransitionsBefore, 23 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 51 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 471, independent: 417, independent conditional: 417, independent unconditional: 0, dependent: 54, dependent conditional: 54, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 471, independent: 417, independent conditional: 0, independent unconditional: 417, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 471, independent: 417, independent conditional: 0, independent unconditional: 417, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 471, independent: 417, independent conditional: 0, independent unconditional: 417, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 359, independent: 327, independent conditional: 0, independent unconditional: 327, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 359, independent: 318, independent conditional: 0, independent unconditional: 318, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 83, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 471, independent: 90, independent conditional: 0, independent unconditional: 90, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 359, unknown conditional: 0, unknown unconditional: 359] , Statistics on independence cache: Total cache size (in pairs): 468, Positive cache size: 436, Positive conditional cache size: 0, Positive unconditional cache size: 436, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 130]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 126 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.5s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 152 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 152 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 934 IncrementalHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 5 mSDtfsCounter, 934 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=4, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 678 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 21:16:50,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...