/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-RepeatedSemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 02:17:32,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 02:17:32,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 02:17:32,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 02:17:32,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 02:17:32,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 02:17:32,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 02:17:33,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 02:17:33,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 02:17:33,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 02:17:33,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 02:17:33,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 02:17:33,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 02:17:33,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 02:17:33,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 02:17:33,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 02:17:33,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 02:17:33,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 02:17:33,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 02:17:33,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 02:17:33,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 02:17:33,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 02:17:33,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 02:17:33,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 02:17:33,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 02:17:33,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 02:17:33,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 02:17:33,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 02:17:33,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 02:17:33,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 02:17:33,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 02:17:33,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 02:17:33,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 02:17:33,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 02:17:33,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 02:17:33,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 02:17:33,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 02:17:33,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 02:17:33,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 02:17:33,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 02:17:33,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 02:17:33,047 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-RepeatedSemanticLbe.epf [2022-12-06 02:17:33,081 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 02:17:33,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 02:17:33,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 02:17:33,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 02:17:33,083 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 02:17:33,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 02:17:33,084 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 02:17:33,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 02:17:33,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 02:17:33,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 02:17:33,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 02:17:33,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 02:17:33,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 02:17:33,086 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 02:17:33,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 02:17:33,086 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 02:17:33,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 02:17:33,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 02:17:33,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 02:17:33,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 02:17:33,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 02:17:33,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 02:17:33,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 02:17:33,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 02:17:33,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 02:17:33,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 02:17:33,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 02:17:33,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-06 02:17:33,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 02:17:33,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 02:17:33,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 02:17:33,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 02:17:33,435 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 02:17:33,436 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 02:17:33,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2022-12-06 02:17:34,556 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 02:17:34,784 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 02:17:34,785 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2022-12-06 02:17:34,796 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d79ded6c2/39884f40136d44c29feff27815594e17/FLAGa5793e84d [2022-12-06 02:17:34,813 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d79ded6c2/39884f40136d44c29feff27815594e17 [2022-12-06 02:17:34,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 02:17:34,820 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 02:17:34,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 02:17:34,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 02:17:34,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 02:17:34,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 02:17:34" (1/1) ... [2022-12-06 02:17:34,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70562b54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:34, skipping insertion in model container [2022-12-06 02:17:34,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 02:17:34" (1/1) ... [2022-12-06 02:17:34,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 02:17:34,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 02:17:35,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,076 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-12-06 02:17:35,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 02:17:35,096 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 02:17:35,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 02:17:35,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 02:17:35,147 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-12-06 02:17:35,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 02:17:35,170 INFO L208 MainTranslator]: Completed translation [2022-12-06 02:17:35,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35 WrapperNode [2022-12-06 02:17:35,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 02:17:35,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 02:17:35,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 02:17:35,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 02:17:35,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35" (1/1) ... [2022-12-06 02:17:35,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35" (1/1) ... [2022-12-06 02:17:35,229 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 386 [2022-12-06 02:17:35,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 02:17:35,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 02:17:35,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 02:17:35,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 02:17:35,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35" (1/1) ... [2022-12-06 02:17:35,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35" (1/1) ... [2022-12-06 02:17:35,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35" (1/1) ... [2022-12-06 02:17:35,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35" (1/1) ... [2022-12-06 02:17:35,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35" (1/1) ... [2022-12-06 02:17:35,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35" (1/1) ... [2022-12-06 02:17:35,262 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35" (1/1) ... [2022-12-06 02:17:35,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35" (1/1) ... [2022-12-06 02:17:35,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 02:17:35,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 02:17:35,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 02:17:35,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 02:17:35,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35" (1/1) ... [2022-12-06 02:17:35,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 02:17:35,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:17:35,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-06 02:17:35,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-06 02:17:35,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 02:17:35,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 02:17:35,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 02:17:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 02:17:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 02:17:35,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 02:17:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 02:17:35,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 02:17:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 02:17:35,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 02:17:35,347 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-06 02:17:35,347 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-06 02:17:35,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 02:17:35,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-06 02:17:35,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-06 02:17:35,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-06 02:17:35,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-06 02:17:35,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 02:17:35,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 02:17:35,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 02:17:35,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 02:17:35,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 02:17:35,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 02:17:35,350 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 02:17:35,529 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 02:17:35,531 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 02:17:36,014 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 02:17:36,216 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 02:17:36,217 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-06 02:17:36,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 02:17:36 BoogieIcfgContainer [2022-12-06 02:17:36,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 02:17:36,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 02:17:36,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 02:17:36,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 02:17:36,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 02:17:34" (1/3) ... [2022-12-06 02:17:36,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f15bf6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 02:17:36, skipping insertion in model container [2022-12-06 02:17:36,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 02:17:35" (2/3) ... [2022-12-06 02:17:36,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f15bf6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 02:17:36, skipping insertion in model container [2022-12-06 02:17:36,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 02:17:36" (3/3) ... [2022-12-06 02:17:36,229 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-12-06 02:17:36,243 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 02:17:36,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 02:17:36,244 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 02:17:36,388 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-06 02:17:36,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 293 transitions, 658 flow [2022-12-06 02:17:36,557 INFO L130 PetriNetUnfolder]: 21/249 cut-off events. [2022-12-06 02:17:36,557 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 02:17:36,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 249 events. 21/249 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 283 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 212. Up to 3 conditions per place. [2022-12-06 02:17:36,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 293 transitions, 658 flow [2022-12-06 02:17:36,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 241 transitions, 530 flow [2022-12-06 02:17:36,576 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:17:36,594 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 241 transitions, 530 flow [2022-12-06 02:17:36,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 241 transitions, 530 flow [2022-12-06 02:17:36,671 INFO L130 PetriNetUnfolder]: 21/241 cut-off events. [2022-12-06 02:17:36,672 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 02:17:36,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 241 events. 21/241 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 282 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 212. Up to 3 conditions per place. [2022-12-06 02:17:36,687 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 241 transitions, 530 flow [2022-12-06 02:17:36,688 INFO L188 LiptonReduction]: Number of co-enabled transitions 8352 [2022-12-06 02:17:47,071 INFO L203 LiptonReduction]: Total number of compositions: 184 [2022-12-06 02:17:47,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 02:17:47,089 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=REPEATED_LIPTON_PN, 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;@17a30876, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 02:17:47,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-06 02:17:47,098 INFO L130 PetriNetUnfolder]: 10/57 cut-off events. [2022-12-06 02:17:47,098 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 02:17:47,099 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:17:47,099 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:17:47,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:17:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:17:47,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1141140935, now seen corresponding path program 1 times [2022-12-06 02:17:47,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:17:47,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593210824] [2022-12-06 02:17:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:17:47,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:17:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:17:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:17:47,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:17:47,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593210824] [2022-12-06 02:17:47,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593210824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:17:47,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:17:47,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 02:17:47,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758260488] [2022-12-06 02:17:47,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:17:47,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-06 02:17:47,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:17:47,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-06 02:17:47,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-06 02:17:47,471 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2022-12-06 02:17:47,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 164 flow. Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:17:47,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:17:47,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2022-12-06 02:17:47,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:17:48,018 INFO L130 PetriNetUnfolder]: 3214/4245 cut-off events. [2022-12-06 02:17:48,018 INFO L131 PetriNetUnfolder]: For 787/787 co-relation queries the response was YES. [2022-12-06 02:17:48,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9422 conditions, 4245 events. 3214/4245 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14775 event pairs, 1953 based on Foata normal form. 0/2955 useless extension candidates. Maximal degree in co-relation 9103. Up to 4099 conditions per place. [2022-12-06 02:17:48,046 INFO L137 encePairwiseOnDemand]: 57/58 looper letters, 41 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2022-12-06 02:17:48,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 57 transitions, 244 flow [2022-12-06 02:17:48,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-06 02:17:48,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-06 02:17:48,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2022-12-06 02:17:48,058 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2022-12-06 02:17:48,063 INFO L294 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2022-12-06 02:17:48,065 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:17:48,066 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 57 transitions, 244 flow [2022-12-06 02:17:48,089 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 57 transitions, 244 flow [2022-12-06 02:17:48,089 INFO L188 LiptonReduction]: Number of co-enabled transitions 706 [2022-12-06 02:17:48,555 INFO L203 LiptonReduction]: Total number of compositions: 11 [2022-12-06 02:17:48,557 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 494 [2022-12-06 02:17:48,557 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 222 flow [2022-12-06 02:17:48,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:17:48,558 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:17:48,558 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:17:48,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 02:17:48,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:17:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:17:48,559 INFO L85 PathProgramCache]: Analyzing trace with hash 849413539, now seen corresponding path program 1 times [2022-12-06 02:17:48,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:17:48,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44664218] [2022-12-06 02:17:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:17:48,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:17:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:17:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:17:49,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:17:49,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44664218] [2022-12-06 02:17:49,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44664218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:17:49,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:17:49,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 02:17:49,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949024355] [2022-12-06 02:17:49,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:17:49,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 02:17:49,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:17:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 02:17:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 02:17:49,105 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 46 [2022-12-06 02:17:49,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:17:49,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:17:49,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 46 [2022-12-06 02:17:49,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:17:50,615 INFO L130 PetriNetUnfolder]: 10472/13715 cut-off events. [2022-12-06 02:17:50,615 INFO L131 PetriNetUnfolder]: For 2910/2910 co-relation queries the response was YES. [2022-12-06 02:17:50,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43757 conditions, 13715 events. 10472/13715 cut-off events. For 2910/2910 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 55901 event pairs, 4974 based on Foata normal form. 92/10537 useless extension candidates. Maximal degree in co-relation 26171. Up to 12857 conditions per place. [2022-12-06 02:17:50,686 INFO L137 encePairwiseOnDemand]: 39/46 looper letters, 45 selfloop transitions, 2 changer transitions 72/119 dead transitions. [2022-12-06 02:17:50,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 119 transitions, 818 flow [2022-12-06 02:17:50,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 02:17:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 02:17:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2022-12-06 02:17:50,692 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2022-12-06 02:17:50,692 INFO L294 CegarLoopForPetriNet]: 67 programPoint places, -6 predicate places. [2022-12-06 02:17:50,694 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:17:50,694 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 119 transitions, 818 flow [2022-12-06 02:17:50,763 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 119 transitions, 818 flow [2022-12-06 02:17:50,763 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:17:53,631 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-06 02:17:53,632 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2939 [2022-12-06 02:17:53,632 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 118 transitions, 812 flow [2022-12-06 02:17:53,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:17:53,633 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:17:53,633 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:17:53,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 02:17:53,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:17:53,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:17:53,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1684656415, now seen corresponding path program 1 times [2022-12-06 02:17:53,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:17:53,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675537374] [2022-12-06 02:17:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:17:53,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:17:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:17:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:17:54,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:17:54,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675537374] [2022-12-06 02:17:54,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675537374] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:17:54,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:17:54,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 02:17:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150025902] [2022-12-06 02:17:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:17:54,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 02:17:54,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:17:54,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 02:17:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 02:17:54,214 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 47 [2022-12-06 02:17:54,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 118 transitions, 812 flow. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:17:54,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:17:54,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 47 [2022-12-06 02:17:54,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:17:57,102 INFO L130 PetriNetUnfolder]: 20539/26658 cut-off events. [2022-12-06 02:17:57,102 INFO L131 PetriNetUnfolder]: For 5464/5464 co-relation queries the response was YES. [2022-12-06 02:17:57,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111513 conditions, 26658 events. 20539/26658 cut-off events. For 5464/5464 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 119823 event pairs, 4586 based on Foata normal form. 1/19728 useless extension candidates. Maximal degree in co-relation 61777. Up to 25186 conditions per place. [2022-12-06 02:17:57,261 INFO L137 encePairwiseOnDemand]: 37/47 looper letters, 133 selfloop transitions, 10 changer transitions 129/272 dead transitions. [2022-12-06 02:17:57,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 272 transitions, 2414 flow [2022-12-06 02:17:57,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 02:17:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 02:17:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2022-12-06 02:17:57,263 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2022-12-06 02:17:57,264 INFO L294 CegarLoopForPetriNet]: 67 programPoint places, -2 predicate places. [2022-12-06 02:17:57,265 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:17:57,265 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 272 transitions, 2414 flow [2022-12-06 02:17:57,366 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 272 transitions, 2414 flow [2022-12-06 02:17:57,367 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:17:57,375 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:17:57,376 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 112 [2022-12-06 02:17:57,376 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 272 transitions, 2414 flow [2022-12-06 02:17:57,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:17:57,377 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:17:57,377 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:17:57,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 02:17:57,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:17:57,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:17:57,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1672777159, now seen corresponding path program 2 times [2022-12-06 02:17:57,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:17:57,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543545745] [2022-12-06 02:17:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:17:57,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:17:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:17:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:17:57,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:17:57,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543545745] [2022-12-06 02:17:57,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543545745] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:17:57,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:17:57,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 02:17:57,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110868821] [2022-12-06 02:17:57,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:17:57,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 02:17:57,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:17:57,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 02:17:57,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 02:17:57,811 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 47 [2022-12-06 02:17:57,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 272 transitions, 2414 flow. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:17:57,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:17:57,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 47 [2022-12-06 02:17:57,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:18:00,604 INFO L130 PetriNetUnfolder]: 20539/26657 cut-off events. [2022-12-06 02:18:00,604 INFO L131 PetriNetUnfolder]: For 5488/5488 co-relation queries the response was YES. [2022-12-06 02:18:00,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138167 conditions, 26657 events. 20539/26657 cut-off events. For 5488/5488 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 119277 event pairs, 4484 based on Foata normal form. 1/19727 useless extension candidates. Maximal degree in co-relation 76604. Up to 25185 conditions per place. [2022-12-06 02:18:00,751 INFO L137 encePairwiseOnDemand]: 38/47 looper letters, 144 selfloop transitions, 10 changer transitions 138/292 dead transitions. [2022-12-06 02:18:00,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 292 transitions, 3175 flow [2022-12-06 02:18:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 02:18:00,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 02:18:00,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2022-12-06 02:18:00,755 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2022-12-06 02:18:00,756 INFO L294 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2022-12-06 02:18:00,758 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:18:00,758 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 292 transitions, 3175 flow [2022-12-06 02:18:00,884 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 292 transitions, 3175 flow [2022-12-06 02:18:00,884 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:18:00,893 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:18:00,901 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 145 [2022-12-06 02:18:00,901 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 292 transitions, 3175 flow [2022-12-06 02:18:00,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:18:00,901 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:18:00,901 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:18:00,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 02:18:00,902 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:18:00,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:18:00,902 INFO L85 PathProgramCache]: Analyzing trace with hash -248324694, now seen corresponding path program 1 times [2022-12-06 02:18:00,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:18:00,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021382341] [2022-12-06 02:18:00,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:18:00,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:18:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:18:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:18:01,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:18:01,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021382341] [2022-12-06 02:18:01,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021382341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:18:01,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:18:01,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 02:18:01,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31172277] [2022-12-06 02:18:01,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:18:01,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 02:18:01,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:18:01,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 02:18:01,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 02:18:01,240 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 47 [2022-12-06 02:18:01,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 292 transitions, 3175 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:18:01,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:18:01,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 47 [2022-12-06 02:18:01,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:18:03,201 INFO L130 PetriNetUnfolder]: 17475/23078 cut-off events. [2022-12-06 02:18:03,201 INFO L131 PetriNetUnfolder]: For 5198/5198 co-relation queries the response was YES. [2022-12-06 02:18:03,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142884 conditions, 23078 events. 17475/23078 cut-off events. For 5198/5198 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 103725 event pairs, 6654 based on Foata normal form. 0/17973 useless extension candidates. Maximal degree in co-relation 91431. Up to 21646 conditions per place. [2022-12-06 02:18:03,358 INFO L137 encePairwiseOnDemand]: 39/47 looper letters, 153 selfloop transitions, 2 changer transitions 154/309 dead transitions. [2022-12-06 02:18:03,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 309 transitions, 3978 flow [2022-12-06 02:18:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 02:18:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 02:18:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2022-12-06 02:18:03,360 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2022-12-06 02:18:03,361 INFO L294 CegarLoopForPetriNet]: 67 programPoint places, 5 predicate places. [2022-12-06 02:18:03,361 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:18:03,362 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 309 transitions, 3978 flow [2022-12-06 02:18:03,726 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 309 transitions, 3978 flow [2022-12-06 02:18:03,726 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:18:06,702 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-06 02:18:06,703 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 3342 [2022-12-06 02:18:06,704 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 308 transitions, 3966 flow [2022-12-06 02:18:06,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:18:06,704 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:18:06,704 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:18:06,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 02:18:06,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:18:06,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:18:06,705 INFO L85 PathProgramCache]: Analyzing trace with hash -719794644, now seen corresponding path program 1 times [2022-12-06 02:18:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:18:06,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197894574] [2022-12-06 02:18:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:18:06,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:18:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:18:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:18:06,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:18:06,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197894574] [2022-12-06 02:18:06,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197894574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:18:06,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:18:06,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 02:18:06,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220617421] [2022-12-06 02:18:06,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:18:06,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 02:18:06,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:18:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 02:18:06,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 02:18:06,902 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 48 [2022-12-06 02:18:06,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 308 transitions, 3966 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:18:06,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:18:06,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 48 [2022-12-06 02:18:06,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:18:10,506 INFO L130 PetriNetUnfolder]: 29539/38317 cut-off events. [2022-12-06 02:18:10,506 INFO L131 PetriNetUnfolder]: For 8210/8210 co-relation queries the response was YES. [2022-12-06 02:18:10,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275096 conditions, 38317 events. 29539/38317 cut-off events. For 8210/8210 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 176738 event pairs, 6648 based on Foata normal form. 88/28444 useless extension candidates. Maximal degree in co-relation 211990. Up to 36421 conditions per place. [2022-12-06 02:18:10,744 INFO L137 encePairwiseOnDemand]: 40/48 looper letters, 261 selfloop transitions, 21 changer transitions 158/440 dead transitions. [2022-12-06 02:18:10,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 440 transitions, 6556 flow [2022-12-06 02:18:10,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 02:18:10,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 02:18:10,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2022-12-06 02:18:10,746 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2022-12-06 02:18:10,746 INFO L294 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2022-12-06 02:18:10,747 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:18:10,747 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 440 transitions, 6556 flow [2022-12-06 02:18:10,951 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 440 transitions, 6556 flow [2022-12-06 02:18:10,952 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:18:10,964 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:18:10,965 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 218 [2022-12-06 02:18:10,965 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 440 transitions, 6556 flow [2022-12-06 02:18:10,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:18:10,965 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:18:10,965 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:18:10,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 02:18:10,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:18:10,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:18:10,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1302703847, now seen corresponding path program 1 times [2022-12-06 02:18:10,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:18:10,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755407312] [2022-12-06 02:18:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:18:10,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:18:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:18:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 02:18:11,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:18:11,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755407312] [2022-12-06 02:18:11,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755407312] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:18:11,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:18:11,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 02:18:11,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698056568] [2022-12-06 02:18:11,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:18:11,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 02:18:11,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:18:11,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 02:18:11,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 02:18:11,239 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 48 [2022-12-06 02:18:11,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 440 transitions, 6556 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:18:11,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:18:11,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 48 [2022-12-06 02:18:11,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:18:17,017 INFO L130 PetriNetUnfolder]: 43893/56302 cut-off events. [2022-12-06 02:18:17,017 INFO L131 PetriNetUnfolder]: For 11479/11479 co-relation queries the response was YES. [2022-12-06 02:18:17,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460246 conditions, 56302 events. 43893/56302 cut-off events. For 11479/11479 co-relation queries the response was YES. Maximal size of possible extension queue 1034. Compared 266037 event pairs, 6510 based on Foata normal form. 121/40485 useless extension candidates. Maximal degree in co-relation 385706. Up to 54031 conditions per place. [2022-12-06 02:18:17,553 INFO L137 encePairwiseOnDemand]: 42/48 looper letters, 416 selfloop transitions, 18 changer transitions 150/584 dead transitions. [2022-12-06 02:18:17,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 584 transitions, 9885 flow [2022-12-06 02:18:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 02:18:17,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 02:18:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2022-12-06 02:18:17,554 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.640625 [2022-12-06 02:18:17,555 INFO L294 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2022-12-06 02:18:17,556 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:18:17,556 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 584 transitions, 9885 flow [2022-12-06 02:18:17,821 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 584 transitions, 9885 flow [2022-12-06 02:18:17,821 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:18:17,836 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:18:17,837 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 282 [2022-12-06 02:18:17,837 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 584 transitions, 9885 flow [2022-12-06 02:18:17,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:18:17,838 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:18:17,838 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:18:17,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 02:18:17,838 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:18:17,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:18:17,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1246707216, now seen corresponding path program 1 times [2022-12-06 02:18:17,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:18:17,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805196959] [2022-12-06 02:18:17,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:18:17,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:18:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:18:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 02:18:18,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:18:18,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805196959] [2022-12-06 02:18:18,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805196959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 02:18:18,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 02:18:18,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 02:18:18,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407304907] [2022-12-06 02:18:18,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 02:18:18,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 02:18:18,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:18:18,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 02:18:18,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 02:18:18,077 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 48 [2022-12-06 02:18:18,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 584 transitions, 9885 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:18:18,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:18:18,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 48 [2022-12-06 02:18:18,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:18:26,436 INFO L130 PetriNetUnfolder]: 58409/74536 cut-off events. [2022-12-06 02:18:26,436 INFO L131 PetriNetUnfolder]: For 15140/15140 co-relation queries the response was YES. [2022-12-06 02:18:26,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683672 conditions, 74536 events. 58409/74536 cut-off events. For 15140/15140 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 359893 event pairs, 6510 based on Foata normal form. 42/52626 useless extension candidates. Maximal degree in co-relation 595450. Up to 71875 conditions per place. [2022-12-06 02:18:26,991 INFO L137 encePairwiseOnDemand]: 42/48 looper letters, 564 selfloop transitions, 26 changer transitions 156/746 dead transitions. [2022-12-06 02:18:26,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 746 transitions, 14132 flow [2022-12-06 02:18:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 02:18:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 02:18:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2022-12-06 02:18:26,993 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2022-12-06 02:18:26,993 INFO L294 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2022-12-06 02:18:26,994 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:18:26,994 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 746 transitions, 14132 flow [2022-12-06 02:18:27,569 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 746 transitions, 14132 flow [2022-12-06 02:18:27,569 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:18:27,589 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:18:27,590 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 597 [2022-12-06 02:18:27,590 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 746 transitions, 14132 flow [2022-12-06 02:18:27,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:18:27,590 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:18:27,592 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:18:27,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 02:18:27,592 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:18:27,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:18:27,593 INFO L85 PathProgramCache]: Analyzing trace with hash 477569202, now seen corresponding path program 1 times [2022-12-06 02:18:27,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:18:27,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161334347] [2022-12-06 02:18:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:18:27,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:18:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:18:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:18:29,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:18:29,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161334347] [2022-12-06 02:18:29,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161334347] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 02:18:29,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53048232] [2022-12-06 02:18:29,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:18:29,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:18:29,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:18:29,398 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) [2022-12-06 02:18:29,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 02:18:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:18:29,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 74 conjunts are in the unsatisfiable core [2022-12-06 02:18:29,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 02:18:30,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-06 02:18:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:18:30,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 02:18:30,368 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 02:18:30,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2022-12-06 02:18:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:18:30,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53048232] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 02:18:30,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 02:18:30,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 20 [2022-12-06 02:18:30,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424523129] [2022-12-06 02:18:30,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 02:18:30,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 02:18:30,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:18:30,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 02:18:30,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-12-06 02:18:30,491 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 48 [2022-12-06 02:18:30,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 746 transitions, 14132 flow. Second operand has 21 states, 20 states have (on average 5.4) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:18:30,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:18:30,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 48 [2022-12-06 02:18:30,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 02:18:53,792 INFO L130 PetriNetUnfolder]: 105134/134662 cut-off events. [2022-12-06 02:18:53,793 INFO L131 PetriNetUnfolder]: For 29424/29424 co-relation queries the response was YES. [2022-12-06 02:18:54,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1369474 conditions, 134662 events. 105134/134662 cut-off events. For 29424/29424 co-relation queries the response was YES. Maximal size of possible extension queue 2395. Compared 703023 event pairs, 7096 based on Foata normal form. 16/94117 useless extension candidates. Maximal degree in co-relation 1264743. Up to 130581 conditions per place. [2022-12-06 02:18:54,937 INFO L137 encePairwiseOnDemand]: 31/48 looper letters, 1537 selfloop transitions, 217 changer transitions 542/2296 dead transitions. [2022-12-06 02:18:54,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 2296 transitions, 48069 flow [2022-12-06 02:18:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-06 02:18:54,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-06 02:18:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 839 transitions. [2022-12-06 02:18:54,941 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.379981884057971 [2022-12-06 02:18:54,941 INFO L294 CegarLoopForPetriNet]: 67 programPoint places, 58 predicate places. [2022-12-06 02:18:54,942 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 02:18:54,942 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 2296 transitions, 48069 flow [2022-12-06 02:18:55,995 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 2296 transitions, 48069 flow [2022-12-06 02:18:55,996 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 02:18:56,046 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 02:18:56,047 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1105 [2022-12-06 02:18:56,047 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 2296 transitions, 48069 flow [2022-12-06 02:18:56,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.4) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:18:56,047 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 02:18:56,047 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 02:18:56,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-06 02:18:56,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:18:56,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-06 02:18:56,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 02:18:56,254 INFO L85 PathProgramCache]: Analyzing trace with hash 767324631, now seen corresponding path program 1 times [2022-12-06 02:18:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 02:18:56,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219461715] [2022-12-06 02:18:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:18:56,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 02:18:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:18:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:18:57,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 02:18:57,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219461715] [2022-12-06 02:18:57,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219461715] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 02:18:57,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275912470] [2022-12-06 02:18:57,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 02:18:57,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 02:18:57,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 02:18:57,664 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) [2022-12-06 02:18:57,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 02:18:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 02:18:57,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 81 conjunts are in the unsatisfiable core [2022-12-06 02:18:57,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 02:18:58,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 02:18:58,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-06 02:18:58,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 02:18:58,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-06 02:18:58,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-06 02:18:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 02:18:58,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 02:18:58,641 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~x~0.offset 4 (* c_~i2~0 4)))) (and (forall ((v_ArrVal_445 (Array Int Int))) (<= (+ c_~s11~0 c_~s21~0) (+ c_~s22~0 c_~s12~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork5_~#t6~0#1.base| v_ArrVal_445) c_~x~0.base) .cse0)))) (forall ((v_ArrVal_445 (Array Int Int))) (< (+ c_~s22~0 c_~s12~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork5_~#t6~0#1.base| v_ArrVal_445) c_~x~0.base) .cse0)) (+ c_~s11~0 c_~s21~0 1))))) is different from false [2022-12-06 02:18:59,741 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~x~0.offset 4 (* c_~i2~0 4)))) (and (forall ((|v_thread4Thread1of1ForFork5_~#t5~0#1.base_105| Int)) (or (forall ((|v_thread4Thread1of1ForFork5_~#t6~0#1.base_73| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread4Thread1of1ForFork5_~#t6~0#1.base_73|)) (forall ((v_ArrVal_445 (Array Int Int)) (v_ArrVal_444 (Array Int Int))) (< (+ c_~s22~0 c_~s12~0 (select (select (store (store |c_#memory_int| |v_thread4Thread1of1ForFork5_~#t5~0#1.base_105| v_ArrVal_444) |v_thread4Thread1of1ForFork5_~#t6~0#1.base_73| v_ArrVal_445) c_~x~0.base) .cse0)) (+ c_~s11~0 c_~s21~0 1))))) (not (< |c_#StackHeapBarrier| |v_thread4Thread1of1ForFork5_~#t5~0#1.base_105|)))) (forall ((|v_thread4Thread1of1ForFork5_~#t5~0#1.base_105| Int)) (or (forall ((|v_thread4Thread1of1ForFork5_~#t6~0#1.base_73| Int)) (or (forall ((v_ArrVal_445 (Array Int Int)) (v_ArrVal_444 (Array Int Int))) (<= (+ c_~s11~0 c_~s21~0) (+ c_~s22~0 c_~s12~0 (select (select (store (store |c_#memory_int| |v_thread4Thread1of1ForFork5_~#t5~0#1.base_105| v_ArrVal_444) |v_thread4Thread1of1ForFork5_~#t6~0#1.base_73| v_ArrVal_445) c_~x~0.base) .cse0)))) (not (< |c_#StackHeapBarrier| |v_thread4Thread1of1ForFork5_~#t6~0#1.base_73|)))) (not (< |c_#StackHeapBarrier| |v_thread4Thread1of1ForFork5_~#t5~0#1.base_105|)))))) is different from false [2022-12-06 02:18:59,800 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 02:18:59,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 99 [2022-12-06 02:18:59,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 39 [2022-12-06 02:18:59,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 66 [2022-12-06 02:18:59,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 02:18:59,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 02:18:59,889 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-06 02:18:59,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2022-12-06 02:19:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-06 02:19:00,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275912470] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 02:19:00,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 02:19:00,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-12-06 02:19:00,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434255198] [2022-12-06 02:19:00,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 02:19:00,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-06 02:19:00,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 02:19:00,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-06 02:19:00,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=409, Unknown=2, NotChecked=82, Total=552 [2022-12-06 02:19:00,057 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 48 [2022-12-06 02:19:00,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 2296 transitions, 48069 flow. Second operand has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 02:19:00,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 02:19:00,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 48 [2022-12-06 02:19:00,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand