/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 22:43:01,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 22:43:01,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 22:43:01,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 22:43:01,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 22:43:01,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 22:43:01,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 22:43:01,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 22:43:01,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 22:43:01,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 22:43:01,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 22:43:01,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 22:43:01,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 22:43:01,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 22:43:01,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 22:43:01,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 22:43:01,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 22:43:01,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 22:43:01,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 22:43:01,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 22:43:01,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 22:43:01,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 22:43:01,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 22:43:01,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 22:43:01,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 22:43:01,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 22:43:01,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 22:43:01,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 22:43:01,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 22:43:01,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 22:43:01,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 22:43:01,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 22:43:01,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 22:43:01,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 22:43:01,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 22:43:01,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 22:43:01,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 22:43:01,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 22:43:01,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 22:43:01,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 22:43:01,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 22:43:01,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 22:43:01,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 22:43:01,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 22:43:01,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 22:43:01,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 22:43:01,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 22:43:01,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 22:43:01,260 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 22:43:01,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 22:43:01,260 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 22:43:01,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 22:43:01,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 22:43:01,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 22:43:01,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 22:43:01,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 22:43:01,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 22:43:01,261 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 22:43:01,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 22:43:01,261 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 22:43:01,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 22:43:01,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 22:43:01,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 22:43:01,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 22:43:01,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 22:43:01,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 22:43:01,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 22:43:01,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 22:43:01,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 22:43:01,280 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 22:43:01,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 22:43:01,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 22:43:01,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 22:43:01,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 22:43:01,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 22:43:01,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 22:43:01,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 22:43:01,549 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 22:43:01,555 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 22:43:01,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2022-12-11 22:43:02,579 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 22:43:02,788 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 22:43:02,788 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2022-12-11 22:43:02,799 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6223a3b8b/0cda52164b0b48b1831e7ef702dc4091/FLAGc663a94af [2022-12-11 22:43:02,811 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6223a3b8b/0cda52164b0b48b1831e7ef702dc4091 [2022-12-11 22:43:02,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 22:43:02,815 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 22:43:02,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 22:43:02,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 22:43:02,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 22:43:02,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:02,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76bad61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02, skipping insertion in model container [2022-12-11 22:43:02,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:02,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 22:43:02,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 22:43:02,937 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,943 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,953 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/popl20-threaded-sum-3.wvr.c[2957,2970] [2022-12-11 22:43:02,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 22:43:02,961 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 22:43:02,970 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,972 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,972 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 22:43:02,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 22:43:02,980 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/popl20-threaded-sum-3.wvr.c[2957,2970] [2022-12-11 22:43:02,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 22:43:02,990 INFO L208 MainTranslator]: Completed translation [2022-12-11 22:43:02,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02 WrapperNode [2022-12-11 22:43:02,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 22:43:02,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 22:43:02,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 22:43:02,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 22:43:02,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:03,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:03,030 INFO L138 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-12-11 22:43:03,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 22:43:03,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 22:43:03,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 22:43:03,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 22:43:03,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:03,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:03,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:03,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:03,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:03,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:03,065 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:03,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:03,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 22:43:03,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 22:43:03,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 22:43:03,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 22:43:03,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02" (1/1) ... [2022-12-11 22:43:03,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 22:43:03,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:43:03,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 22:43:03,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 22:43:03,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 22:43:03,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 22:43:03,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 22:43:03,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 22:43:03,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 22:43:03,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-11 22:43:03,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-11 22:43:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 22:43:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 22:43:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 22:43:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 22:43:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 22:43:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 22:43:03,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 22:43:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 22:43:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 22:43:03,177 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 22:43:03,280 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 22:43:03,281 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 22:43:03,436 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 22:43:03,475 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 22:43:03,475 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-11 22:43:03,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 10:43:03 BoogieIcfgContainer [2022-12-11 22:43:03,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 22:43:03,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 22:43:03,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 22:43:03,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 22:43:03,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 10:43:02" (1/3) ... [2022-12-11 22:43:03,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154fe7fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 10:43:03, skipping insertion in model container [2022-12-11 22:43:03,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 10:43:02" (2/3) ... [2022-12-11 22:43:03,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154fe7fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 10:43:03, skipping insertion in model container [2022-12-11 22:43:03,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 10:43:03" (3/3) ... [2022-12-11 22:43:03,483 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2022-12-11 22:43:03,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 22:43:03,496 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 22:43:03,496 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 22:43:03,566 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-11 22:43:03,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 108 transitions, 240 flow [2022-12-11 22:43:03,661 INFO L130 PetriNetUnfolder]: 8/105 cut-off events. [2022-12-11 22:43:03,661 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 22:43:03,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 105 events. 8/105 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-12-11 22:43:03,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 108 transitions, 240 flow [2022-12-11 22:43:03,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 95 transitions, 208 flow [2022-12-11 22:43:03,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 22:43:03,689 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;@22e9a12c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 22:43:03,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 22:43:03,738 INFO L130 PetriNetUnfolder]: 8/94 cut-off events. [2022-12-11 22:43:03,738 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 22:43:03,738 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:43:03,748 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:43:03,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:43:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:43:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1506131630, now seen corresponding path program 1 times [2022-12-11 22:43:03,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:43:03,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421093158] [2022-12-11 22:43:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:43:03,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:43:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:43:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:04,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:43:04,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421093158] [2022-12-11 22:43:04,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421093158] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:43:04,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:43:04,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 22:43:04,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979436238] [2022-12-11 22:43:04,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:43:04,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 22:43:04,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:43:04,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 22:43:04,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-11 22:43:04,832 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 108 [2022-12-11 22:43:04,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 208 flow. Second operand has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:04,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:43:04,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 108 [2022-12-11 22:43:04,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:43:05,099 INFO L130 PetriNetUnfolder]: 250/650 cut-off events. [2022-12-11 22:43:05,099 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2022-12-11 22:43:05,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 650 events. 250/650 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3391 event pairs, 57 based on Foata normal form. 68/635 useless extension candidates. Maximal degree in co-relation 1000. Up to 311 conditions per place. [2022-12-11 22:43:05,105 INFO L137 encePairwiseOnDemand]: 95/108 looper letters, 46 selfloop transitions, 8 changer transitions 2/107 dead transitions. [2022-12-11 22:43:05,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 107 transitions, 356 flow [2022-12-11 22:43:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 22:43:05,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 22:43:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 508 transitions. [2022-12-11 22:43:05,120 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.671957671957672 [2022-12-11 22:43:05,122 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, 6 predicate places. [2022-12-11 22:43:05,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 107 transitions, 356 flow [2022-12-11 22:43:05,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 105 transitions, 348 flow [2022-12-11 22:43:05,127 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 105 transitions, 348 flow [2022-12-11 22:43:05,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:05,127 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:43:05,128 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:43:05,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 22:43:05,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:43:05,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:43:05,128 INFO L85 PathProgramCache]: Analyzing trace with hash -485550720, now seen corresponding path program 1 times [2022-12-11 22:43:05,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:43:05,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043652743] [2022-12-11 22:43:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:43:05,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:43:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:43:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:05,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:43:05,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043652743] [2022-12-11 22:43:05,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043652743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:43:05,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:43:05,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 22:43:05,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132883139] [2022-12-11 22:43:05,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:43:05,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 22:43:05,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:43:05,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 22:43:05,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-11 22:43:05,451 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 108 [2022-12-11 22:43:05,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 105 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 79.33333333333333) internal successors, (476), 6 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:05,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:43:05,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 108 [2022-12-11 22:43:05,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:43:05,839 INFO L130 PetriNetUnfolder]: 902/1895 cut-off events. [2022-12-11 22:43:05,839 INFO L131 PetriNetUnfolder]: For 876/1716 co-relation queries the response was YES. [2022-12-11 22:43:05,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4798 conditions, 1895 events. 902/1895 cut-off events. For 876/1716 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12110 event pairs, 117 based on Foata normal form. 30/1701 useless extension candidates. Maximal degree in co-relation 3642. Up to 1097 conditions per place. [2022-12-11 22:43:05,850 INFO L137 encePairwiseOnDemand]: 97/108 looper letters, 108 selfloop transitions, 42 changer transitions 0/212 dead transitions. [2022-12-11 22:43:05,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 212 transitions, 1148 flow [2022-12-11 22:43:05,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 22:43:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 22:43:05,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 628 transitions. [2022-12-11 22:43:05,852 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8306878306878307 [2022-12-11 22:43:05,853 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, 10 predicate places. [2022-12-11 22:43:05,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 212 transitions, 1148 flow [2022-12-11 22:43:05,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 212 transitions, 1148 flow [2022-12-11 22:43:05,862 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 212 transitions, 1148 flow [2022-12-11 22:43:05,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.33333333333333) internal successors, (476), 6 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:05,863 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:43:05,863 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:43:05,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 22:43:05,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:43:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:43:05,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1966300660, now seen corresponding path program 2 times [2022-12-11 22:43:05,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:43:05,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810176660] [2022-12-11 22:43:05,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:43:05,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:43:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:43:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:06,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:43:06,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810176660] [2022-12-11 22:43:06,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810176660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:43:06,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:43:06,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 22:43:06,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384917489] [2022-12-11 22:43:06,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:43:06,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 22:43:06,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:43:06,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 22:43:06,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-11 22:43:06,149 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 108 [2022-12-11 22:43:06,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 212 transitions, 1148 flow. Second operand has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:06,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:43:06,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 108 [2022-12-11 22:43:06,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:43:06,469 INFO L130 PetriNetUnfolder]: 976/2143 cut-off events. [2022-12-11 22:43:06,469 INFO L131 PetriNetUnfolder]: For 1773/4289 co-relation queries the response was YES. [2022-12-11 22:43:06,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6959 conditions, 2143 events. 976/2143 cut-off events. For 1773/4289 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 14398 event pairs, 96 based on Foata normal form. 102/2046 useless extension candidates. Maximal degree in co-relation 4986. Up to 1257 conditions per place. [2022-12-11 22:43:06,483 INFO L137 encePairwiseOnDemand]: 98/108 looper letters, 176 selfloop transitions, 60 changer transitions 0/298 dead transitions. [2022-12-11 22:43:06,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 298 transitions, 2214 flow [2022-12-11 22:43:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 22:43:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 22:43:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 444 transitions. [2022-12-11 22:43:06,484 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2022-12-11 22:43:06,487 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, 14 predicate places. [2022-12-11 22:43:06,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 298 transitions, 2214 flow [2022-12-11 22:43:06,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 298 transitions, 2214 flow [2022-12-11 22:43:06,499 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 298 transitions, 2214 flow [2022-12-11 22:43:06,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:06,500 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:43:06,500 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:43:06,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 22:43:06,500 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:43:06,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:43:06,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1074462450, now seen corresponding path program 3 times [2022-12-11 22:43:06,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:43:06,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987822608] [2022-12-11 22:43:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:43:06,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:43:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:43:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:06,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:43:06,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987822608] [2022-12-11 22:43:06,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987822608] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:43:06,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477108761] [2022-12-11 22:43:06,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 22:43:06,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:43:06,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:43:06,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 22:43:06,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 22:43:07,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-11 22:43:07,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:43:07,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-11 22:43:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:43:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 22:43:07,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 22:43:07,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477108761] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:43:07,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 22:43:07,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2022-12-11 22:43:07,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596389875] [2022-12-11 22:43:07,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:43:07,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 22:43:07,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:43:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 22:43:07,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-11 22:43:07,207 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 108 [2022-12-11 22:43:07,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 298 transitions, 2214 flow. Second operand has 7 states, 7 states have (on average 73.42857142857143) internal successors, (514), 7 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:07,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:43:07,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 108 [2022-12-11 22:43:07,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:43:07,692 INFO L130 PetriNetUnfolder]: 1880/3947 cut-off events. [2022-12-11 22:43:07,692 INFO L131 PetriNetUnfolder]: For 7338/14004 co-relation queries the response was YES. [2022-12-11 22:43:07,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14986 conditions, 3947 events. 1880/3947 cut-off events. For 7338/14004 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 29388 event pairs, 250 based on Foata normal form. 26/3573 useless extension candidates. Maximal degree in co-relation 11163. Up to 2371 conditions per place. [2022-12-11 22:43:07,724 INFO L137 encePairwiseOnDemand]: 100/108 looper letters, 337 selfloop transitions, 61 changer transitions 0/487 dead transitions. [2022-12-11 22:43:07,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 487 transitions, 4678 flow [2022-12-11 22:43:07,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 22:43:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 22:43:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 619 transitions. [2022-12-11 22:43:07,726 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7164351851851852 [2022-12-11 22:43:07,726 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, 21 predicate places. [2022-12-11 22:43:07,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 487 transitions, 4678 flow [2022-12-11 22:43:07,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 487 transitions, 4678 flow [2022-12-11 22:43:07,751 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 487 transitions, 4678 flow [2022-12-11 22:43:07,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.42857142857143) internal successors, (514), 7 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:07,752 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:43:07,752 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:43:07,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 22:43:07,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:43:07,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:43:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:43:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1215706191, now seen corresponding path program 1 times [2022-12-11 22:43:07,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:43:07,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761415663] [2022-12-11 22:43:07,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:43:07,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:43:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:43:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:08,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:43:08,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761415663] [2022-12-11 22:43:08,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761415663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:43:08,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 22:43:08,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 22:43:08,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456765481] [2022-12-11 22:43:08,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:43:08,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 22:43:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:43:08,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 22:43:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-11 22:43:08,151 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 108 [2022-12-11 22:43:08,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 487 transitions, 4678 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:08,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:43:08,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 108 [2022-12-11 22:43:08,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:43:08,759 INFO L130 PetriNetUnfolder]: 2444/5285 cut-off events. [2022-12-11 22:43:08,759 INFO L131 PetriNetUnfolder]: For 14429/54777 co-relation queries the response was YES. [2022-12-11 22:43:08,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22996 conditions, 5285 events. 2444/5285 cut-off events. For 14429/54777 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 43036 event pairs, 276 based on Foata normal form. 308/5058 useless extension candidates. Maximal degree in co-relation 21327. Up to 3088 conditions per place. [2022-12-11 22:43:08,793 INFO L137 encePairwiseOnDemand]: 99/108 looper letters, 376 selfloop transitions, 67 changer transitions 89/623 dead transitions. [2022-12-11 22:43:08,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 623 transitions, 7198 flow [2022-12-11 22:43:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 22:43:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 22:43:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 459 transitions. [2022-12-11 22:43:08,795 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.85 [2022-12-11 22:43:08,797 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, 25 predicate places. [2022-12-11 22:43:08,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 623 transitions, 7198 flow [2022-12-11 22:43:08,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 534 transitions, 5965 flow [2022-12-11 22:43:08,825 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 534 transitions, 5965 flow [2022-12-11 22:43:08,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:08,826 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:43:08,826 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:43:08,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 22:43:08,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:43:08,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:43:08,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1737109357, now seen corresponding path program 2 times [2022-12-11 22:43:08,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:43:08,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836841539] [2022-12-11 22:43:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:43:08,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:43:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:43:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:09,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:43:09,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836841539] [2022-12-11 22:43:09,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836841539] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:43:09,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805699454] [2022-12-11 22:43:09,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 22:43:09,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:43:09,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:43:09,200 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 22:43:09,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 22:43:09,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 22:43:09,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:43:09,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-11 22:43:09,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:43:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:09,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 22:43:09,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805699454] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:43:09,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 22:43:09,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2022-12-11 22:43:09,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261456244] [2022-12-11 22:43:09,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:43:09,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 22:43:09,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:43:09,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 22:43:09,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-11 22:43:09,469 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 108 [2022-12-11 22:43:09,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 534 transitions, 5965 flow. Second operand has 10 states, 10 states have (on average 67.1) internal successors, (671), 10 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:09,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:43:09,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 108 [2022-12-11 22:43:09,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:43:10,397 INFO L130 PetriNetUnfolder]: 3323/6554 cut-off events. [2022-12-11 22:43:10,398 INFO L131 PetriNetUnfolder]: For 17287/34138 co-relation queries the response was YES. [2022-12-11 22:43:10,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34138 conditions, 6554 events. 3323/6554 cut-off events. For 17287/34138 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 50394 event pairs, 299 based on Foata normal form. 147/6061 useless extension candidates. Maximal degree in co-relation 29881. Up to 4097 conditions per place. [2022-12-11 22:43:10,441 INFO L137 encePairwiseOnDemand]: 95/108 looper letters, 543 selfloop transitions, 75 changer transitions 0/693 dead transitions. [2022-12-11 22:43:10,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 693 transitions, 8998 flow [2022-12-11 22:43:10,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 22:43:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 22:43:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 936 transitions. [2022-12-11 22:43:10,443 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-11 22:43:10,444 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, 37 predicate places. [2022-12-11 22:43:10,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 693 transitions, 8998 flow [2022-12-11 22:43:10,482 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 693 transitions, 8998 flow [2022-12-11 22:43:10,482 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 693 transitions, 8998 flow [2022-12-11 22:43:10,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.1) internal successors, (671), 10 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:10,483 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:43:10,483 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:43:10,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 22:43:10,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-11 22:43:10,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:43:10,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:43:10,689 INFO L85 PathProgramCache]: Analyzing trace with hash 385076185, now seen corresponding path program 3 times [2022-12-11 22:43:10,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:43:10,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072981469] [2022-12-11 22:43:10,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:43:10,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:43:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:43:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:11,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:43:11,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072981469] [2022-12-11 22:43:11,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072981469] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:43:11,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703202178] [2022-12-11 22:43:11,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 22:43:11,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:43:11,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:43:11,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 22:43:11,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 22:43:11,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-11 22:43:11,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:43:11,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-11 22:43:11,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:43:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 22:43:11,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 22:43:11,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703202178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:43:11,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 22:43:11,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-12-11 22:43:11,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055012835] [2022-12-11 22:43:11,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:43:11,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 22:43:11,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:43:11,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 22:43:11,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-11 22:43:11,290 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 108 [2022-12-11 22:43:11,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 693 transitions, 8998 flow. Second operand has 7 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:11,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:43:11,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 108 [2022-12-11 22:43:11,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:43:12,574 INFO L130 PetriNetUnfolder]: 5408/10101 cut-off events. [2022-12-11 22:43:12,574 INFO L131 PetriNetUnfolder]: For 32371/50355 co-relation queries the response was YES. [2022-12-11 22:43:12,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59117 conditions, 10101 events. 5408/10101 cut-off events. For 32371/50355 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 78111 event pairs, 680 based on Foata normal form. 144/9294 useless extension candidates. Maximal degree in co-relation 51424. Up to 6506 conditions per place. [2022-12-11 22:43:12,644 INFO L137 encePairwiseOnDemand]: 99/108 looper letters, 581 selfloop transitions, 109 changer transitions 0/952 dead transitions. [2022-12-11 22:43:12,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 952 transitions, 13911 flow [2022-12-11 22:43:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 22:43:12,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 22:43:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 641 transitions. [2022-12-11 22:43:12,645 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7418981481481481 [2022-12-11 22:43:12,646 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, 44 predicate places. [2022-12-11 22:43:12,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 952 transitions, 13911 flow [2022-12-11 22:43:12,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 952 transitions, 13911 flow [2022-12-11 22:43:12,706 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 952 transitions, 13911 flow [2022-12-11 22:43:12,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:12,706 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:43:12,706 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:43:12,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 22:43:12,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:43:12,912 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:43:12,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:43:12,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1032712713, now seen corresponding path program 1 times [2022-12-11 22:43:12,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:43:12,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786528438] [2022-12-11 22:43:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:43:12,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:43:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:43:13,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:13,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:43:13,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786528438] [2022-12-11 22:43:13,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786528438] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:43:13,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518043627] [2022-12-11 22:43:13,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:43:13,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:43:13,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:43:13,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 22:43:13,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 22:43:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:43:13,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-11 22:43:13,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:43:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:13,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 22:43:13,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518043627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 22:43:13,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 22:43:13,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-12-11 22:43:13,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537693875] [2022-12-11 22:43:13,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 22:43:13,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 22:43:13,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:43:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 22:43:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-11 22:43:13,394 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 108 [2022-12-11 22:43:13,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 952 transitions, 13911 flow. Second operand has 8 states, 8 states have (on average 71.625) internal successors, (573), 8 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:13,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:43:13,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 108 [2022-12-11 22:43:13,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:43:15,147 INFO L130 PetriNetUnfolder]: 6537/11721 cut-off events. [2022-12-11 22:43:15,147 INFO L131 PetriNetUnfolder]: For 49284/73733 co-relation queries the response was YES. [2022-12-11 22:43:15,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79801 conditions, 11721 events. 6537/11721 cut-off events. For 49284/73733 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 89404 event pairs, 501 based on Foata normal form. 198/10890 useless extension candidates. Maximal degree in co-relation 71609. Up to 7849 conditions per place. [2022-12-11 22:43:15,263 INFO L137 encePairwiseOnDemand]: 98/108 looper letters, 1058 selfloop transitions, 119 changer transitions 0/1247 dead transitions. [2022-12-11 22:43:15,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 1247 transitions, 20599 flow [2022-12-11 22:43:15,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 22:43:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 22:43:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 760 transitions. [2022-12-11 22:43:15,265 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2022-12-11 22:43:15,265 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, 53 predicate places. [2022-12-11 22:43:15,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 1247 transitions, 20599 flow [2022-12-11 22:43:15,342 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 1247 transitions, 20599 flow [2022-12-11 22:43:15,342 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 1247 transitions, 20599 flow [2022-12-11 22:43:15,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.625) internal successors, (573), 8 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:15,343 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:43:15,344 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:43:15,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-11 22:43:15,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:43:15,548 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:43:15,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:43:15,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1114440713, now seen corresponding path program 2 times [2022-12-11 22:43:15,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:43:15,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124307659] [2022-12-11 22:43:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:43:15,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:43:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:43:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:17,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:43:17,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124307659] [2022-12-11 22:43:17,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124307659] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:43:17,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455074561] [2022-12-11 22:43:17,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 22:43:17,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:43:17,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:43:17,304 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 22:43:17,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 22:43:17,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 22:43:17,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:43:17,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-11 22:43:17,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:43:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:18,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:43:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:43:21,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455074561] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:43:21,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:43:21,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 40 [2022-12-11 22:43:21,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155414067] [2022-12-11 22:43:21,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:43:21,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-11 22:43:21,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:43:21,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-11 22:43:21,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2022-12-11 22:43:21,878 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 108 [2022-12-11 22:43:21,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 1247 transitions, 20599 flow. Second operand has 40 states, 40 states have (on average 61.4) internal successors, (2456), 40 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:43:21,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:43:21,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 108 [2022-12-11 22:43:21,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:43:31,378 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 158 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:43:33,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-11 22:45:20,063 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 146 DAG size of output: 111 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:45:39,968 INFO L130 PetriNetUnfolder]: 41307/79919 cut-off events. [2022-12-11 22:45:39,969 INFO L131 PetriNetUnfolder]: For 393568/449783 co-relation queries the response was YES. [2022-12-11 22:45:40,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568916 conditions, 79919 events. 41307/79919 cut-off events. For 393568/449783 co-relation queries the response was YES. Maximal size of possible extension queue 4678. Compared 882699 event pairs, 2508 based on Foata normal form. 1200/72763 useless extension candidates. Maximal degree in co-relation 464203. Up to 49707 conditions per place. [2022-12-11 22:45:40,664 INFO L137 encePairwiseOnDemand]: 82/108 looper letters, 5263 selfloop transitions, 4835 changer transitions 1506/11686 dead transitions. [2022-12-11 22:45:40,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 11686 transitions, 221229 flow [2022-12-11 22:45:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2022-12-11 22:45:40,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2022-12-11 22:45:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 14925 transitions. [2022-12-11 22:45:40,708 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6087860988742047 [2022-12-11 22:45:40,708 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, 279 predicate places. [2022-12-11 22:45:40,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 376 places, 11686 transitions, 221229 flow [2022-12-11 22:45:41,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 10180 transitions, 191826 flow [2022-12-11 22:45:41,240 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 10180 transitions, 191826 flow [2022-12-11 22:45:41,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 61.4) internal successors, (2456), 40 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:45:41,241 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 22:45:41,241 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 22:45:41,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-11 22:45:41,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:45:41,446 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 22:45:41,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 22:45:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1529601673, now seen corresponding path program 3 times [2022-12-11 22:45:41,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 22:45:41,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698853694] [2022-12-11 22:45:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 22:45:41,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 22:45:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 22:45:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:45:43,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 22:45:43,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698853694] [2022-12-11 22:45:43,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698853694] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 22:45:43,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569646495] [2022-12-11 22:45:43,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 22:45:43,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:45:43,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 22:45:43,824 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 22:45:43,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 22:45:43,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-11 22:45:43,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 22:45:43,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-11 22:45:44,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 22:45:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:45:45,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 22:45:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 22:45:48,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569646495] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 22:45:48,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 22:45:48,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2022-12-11 22:45:48,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125473255] [2022-12-11 22:45:48,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 22:45:48,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-11 22:45:48,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 22:45:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-11 22:45:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1260, Unknown=0, NotChecked=0, Total=1482 [2022-12-11 22:45:48,059 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 108 [2022-12-11 22:45:48,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 10180 transitions, 191826 flow. Second operand has 39 states, 39 states have (on average 59.53846153846154) internal successors, (2322), 39 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 22:45:48,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 22:45:48,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 108 [2022-12-11 22:45:48,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 22:46:16,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-11 22:47:40,352 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 186 DAG size of output: 169 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:47:44,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-11 22:48:29,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-11 22:49:10,080 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 152 DAG size of output: 150 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:50:21,874 WARN L233 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 162 DAG size of output: 138 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:51:23,676 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 178 DAG size of output: 151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:51:34,669 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 170 DAG size of output: 160 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:51:47,287 WARN L233 SmtUtils]: Spent 8.60s on a formula simplification. DAG size of input: 169 DAG size of output: 138 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:52:12,283 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 185 DAG size of output: 167 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:52:20,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-11 22:52:59,059 WARN L233 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 180 DAG size of output: 146 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:53:42,189 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 178 DAG size of output: 151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:54:08,065 WARN L233 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 166 DAG size of output: 140 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:54:17,473 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 168 DAG size of output: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:55:39,365 WARN L233 SmtUtils]: Spent 14.47s on a formula simplification. DAG size of input: 180 DAG size of output: 146 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:55:51,381 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 167 DAG size of output: 140 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:56:15,398 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 182 DAG size of output: 178 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:56:56,758 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 158 DAG size of output: 125 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 22:57:03,649 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 164 DAG size of output: 137 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-12-11 22:57:26,743 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 22:57:26,743 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 22:57:26,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 475 states. [2022-12-11 22:57:26,787 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-11 22:57:26,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-11 22:57:26,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 22:57:26,992 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 496 known predicates. [2022-12-11 22:57:26,994 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-11 22:57:26,994 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-11 22:57:26,994 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-11 22:57:26,994 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 1] [2022-12-11 22:57:26,996 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 22:57:26,996 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 22:57:26,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 10:57:26 BasicIcfg [2022-12-11 22:57:26,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 22:57:27,000 INFO L158 Benchmark]: Toolchain (without parser) took 864185.23ms. Allocated memory was 167.8MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 144.3MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 768.4MB. Max. memory is 8.0GB. [2022-12-11 22:57:27,000 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 145.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 22:57:27,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.70ms. Allocated memory is still 167.8MB. Free memory was 144.2MB in the beginning and 130.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-11 22:57:27,000 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.42ms. Allocated memory is still 167.8MB. Free memory was 130.2MB in the beginning and 128.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 22:57:27,001 INFO L158 Benchmark]: Boogie Preprocessor took 35.15ms. Allocated memory is still 167.8MB. Free memory was 128.6MB in the beginning and 127.5MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 22:57:27,001 INFO L158 Benchmark]: RCFGBuilder took 409.70ms. Allocated memory is still 167.8MB. Free memory was 127.1MB in the beginning and 109.2MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-12-11 22:57:27,001 INFO L158 Benchmark]: TraceAbstraction took 863520.82ms. Allocated memory was 167.8MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 108.2MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 731.7MB. Max. memory is 8.0GB. [2022-12-11 22:57:27,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 145.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.70ms. Allocated memory is still 167.8MB. Free memory was 144.2MB in the beginning and 130.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.42ms. Allocated memory is still 167.8MB. Free memory was 130.2MB in the beginning and 128.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.15ms. Allocated memory is still 167.8MB. Free memory was 128.6MB in the beginning and 127.5MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 409.70ms. Allocated memory is still 167.8MB. Free memory was 127.1MB in the beginning and 109.2MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 863520.82ms. Allocated memory was 167.8MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 108.2MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 731.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 496 known predicates. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 496 known predicates. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 496 known predicates. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 496 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 126 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.8s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 863.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 844.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 4847 SdHoareTripleChecker+Valid, 54.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4847 mSDsluCounter, 2851 SdHoareTripleChecker+Invalid, 52.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2607 mSDsCounter, 745 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11330 IncrementalHoareTripleChecker+Invalid, 12078 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 745 mSolverCounterUnsat, 244 mSDtfsCounter, 11330 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1459 GetRequests, 628 SyntacticMatches, 2 SemanticMatches, 828 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137605 ImplicationChecksByTransitivity, 722.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191826occurred in iteration=9, InterpolantAutomatonStates: 290, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 30644 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 15.9s InterpolantComputationTime, 1322 NumberOfCodeBlocks, 1314 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1474 ConstructedInterpolants, 0 QuantifiedInterpolants, 24355 SizeOfPredicates, 68 NumberOfNonLiveVariables, 1274 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 9/25 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown