/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:44:31,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:44:31,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:44:31,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:44:31,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:44:31,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:44:31,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:44:31,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:44:31,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:44:31,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:44:31,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:44:31,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:44:31,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:44:31,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:44:31,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:44:31,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:44:31,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:44:31,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:44:31,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:44:31,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:44:31,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:44:31,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:44:31,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:44:31,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:44:31,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 19:44:31,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 19:44:31,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 19:44:31,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 19:44:31,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 19:44:31,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 19:44:31,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 19:44:31,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 19:44:31,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 19:44:31,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 19:44:31,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 19:44:31,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 19:44:31,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 19:44:31,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 19:44:31,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:44:31,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:44:31,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:44:31,207 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-VariableLbe.epf [2023-01-27 19:44:31,228 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:44:31,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:44:31,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:44:31,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:44:31,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:44:31,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:44:31,230 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:44:31,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:44:31,230 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:44:31,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:44:31,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:44:31,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:44:31,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:44:31,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:44:31,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:44:31,231 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:44:31,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:44:31,231 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:44:31,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:44:31,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:44:31,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:44:31,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:44:31,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:44:31,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:44:31,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:44:31,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:44:31,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:44:31,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:44:31,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:44:31,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:44:31,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:44:31,233 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:44:31,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:44:31,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:44:31,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:44:31,412 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:44:31,412 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:44:31,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c [2023-01-27 19:44:32,402 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:44:32,598 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:44:32,599 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c [2023-01-27 19:44:32,603 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781bcbe9f/08fb966c23d84bc4afc2efa7a5810515/FLAG917252a3b [2023-01-27 19:44:33,007 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781bcbe9f/08fb966c23d84bc4afc2efa7a5810515 [2023-01-27 19:44:33,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:44:33,010 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:44:33,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:44:33,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:44:33,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:44:33,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d824302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33, skipping insertion in model container [2023-01-27 19:44:33,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:44:33,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:44:33,134 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c[2237,2250] [2023-01-27 19:44:33,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:44:33,143 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:44:33,157 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c[2237,2250] [2023-01-27 19:44:33,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:44:33,167 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:44:33,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33 WrapperNode [2023-01-27 19:44:33,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:44:33,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:44:33,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:44:33,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:44:33,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,191 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-01-27 19:44:33,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:44:33,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:44:33,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:44:33,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:44:33,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,206 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:44:33,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:44:33,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:44:33,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:44:33,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33" (1/1) ... [2023-01-27 19:44:33,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:44:33,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:44:33,232 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) [2023-01-27 19:44:33,239 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 [2023-01-27 19:44:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:44:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 19:44:33,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 19:44:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 19:44:33,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 19:44:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 19:44:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 19:44:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-27 19:44:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-27 19:44:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:44:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:44:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:44:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:44:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:44:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:44:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:44:33,264 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:44:33,330 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:44:33,331 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:44:33,508 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:44:33,513 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:44:33,514 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-27 19:44:33,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:44:33 BoogieIcfgContainer [2023-01-27 19:44:33,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:44:33,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:44:33,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:44:33,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:44:33,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:44:33" (1/3) ... [2023-01-27 19:44:33,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774af6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:44:33, skipping insertion in model container [2023-01-27 19:44:33,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:33" (2/3) ... [2023-01-27 19:44:33,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774af6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:44:33, skipping insertion in model container [2023-01-27 19:44:33,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:44:33" (3/3) ... [2023-01-27 19:44:33,520 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x3.wvr.c [2023-01-27 19:44:33,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:44:33,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 19:44:33,533 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:44:33,617 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-27 19:44:33,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 123 transitions, 278 flow [2023-01-27 19:44:33,696 INFO L130 PetriNetUnfolder]: 10/119 cut-off events. [2023-01-27 19:44:33,696 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 19:44:33,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 10/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-01-27 19:44:33,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 123 transitions, 278 flow [2023-01-27 19:44:33,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 107 transitions, 238 flow [2023-01-27 19:44:33,706 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:44:33,712 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 107 transitions, 238 flow [2023-01-27 19:44:33,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 107 transitions, 238 flow [2023-01-27 19:44:33,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 107 transitions, 238 flow [2023-01-27 19:44:33,737 INFO L130 PetriNetUnfolder]: 10/107 cut-off events. [2023-01-27 19:44:33,737 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 19:44:33,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 107 events. 10/107 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-01-27 19:44:33,739 INFO L119 LiptonReduction]: Number of co-enabled transitions 1224 [2023-01-27 19:44:36,479 INFO L134 LiptonReduction]: Checked pairs total: 1522 [2023-01-27 19:44:36,479 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-01-27 19:44:36,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:44:36,507 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3806db9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:44:36,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 19:44:36,512 INFO L130 PetriNetUnfolder]: 4/24 cut-off events. [2023-01-27 19:44:36,512 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 19:44:36,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:36,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:44:36,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:44:36,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1000817363, now seen corresponding path program 1 times [2023-01-27 19:44:36,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:36,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625264702] [2023-01-27 19:44:36,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:36,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:37,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:37,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625264702] [2023-01-27 19:44:37,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625264702] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:37,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:37,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 19:44:37,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720118464] [2023-01-27 19:44:37,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:37,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:44:37,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:37,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:44:37,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:44:37,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 216 [2023-01-27 19:44:37,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-01-27 19:44:37,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:37,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 216 [2023-01-27 19:44:37,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:37,254 INFO L130 PetriNetUnfolder]: 497/677 cut-off events. [2023-01-27 19:44:37,254 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-01-27 19:44:37,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 677 events. 497/677 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1778 event pairs, 117 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1016. Up to 471 conditions per place. [2023-01-27 19:44:37,263 INFO L137 encePairwiseOnDemand]: 210/216 looper letters, 41 selfloop transitions, 5 changer transitions 1/47 dead transitions. [2023-01-27 19:44:37,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 233 flow [2023-01-27 19:44:37,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:44:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:44:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2023-01-27 19:44:37,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-01-27 19:44:37,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2023-01-27 19:44:37,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2023-01-27 19:44:37,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:37,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2023-01-27 19:44:37,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2023-01-27 19:44:37,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-01-27 19:44:37,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-01-27 19:44:37,294 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 74 flow. Second operand 3 states and 306 transitions. [2023-01-27 19:44:37,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 233 flow [2023-01-27 19:44:37,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 47 transitions, 203 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 19:44:37,309 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 91 flow [2023-01-27 19:44:37,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-01-27 19:44:37,315 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2023-01-27 19:44:37,316 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 91 flow [2023-01-27 19:44:37,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-01-27 19:44:37,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:37,317 INFO L208 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] [2023-01-27 19:44:37,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:44:37,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:44:37,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:37,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1019366599, now seen corresponding path program 1 times [2023-01-27 19:44:37,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:37,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772508087] [2023-01-27 19:44:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:37,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:37,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772508087] [2023-01-27 19:44:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772508087] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:37,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:37,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:44:37,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453516545] [2023-01-27 19:44:37,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:37,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:44:37,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:37,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:44:37,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:44:37,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-27 19:44:37,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-27 19:44:37,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:37,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-27 19:44:37,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:37,733 INFO L130 PetriNetUnfolder]: 693/951 cut-off events. [2023-01-27 19:44:37,733 INFO L131 PetriNetUnfolder]: For 342/342 co-relation queries the response was YES. [2023-01-27 19:44:37,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2416 conditions, 951 events. 693/951 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2792 event pairs, 67 based on Foata normal form. 32/983 useless extension candidates. Maximal degree in co-relation 766. Up to 371 conditions per place. [2023-01-27 19:44:37,737 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 68 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2023-01-27 19:44:37,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 78 transitions, 387 flow [2023-01-27 19:44:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2023-01-27 19:44:37,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2023-01-27 19:44:37,739 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2023-01-27 19:44:37,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2023-01-27 19:44:37,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:37,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2023-01-27 19:44:37,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 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) [2023-01-27 19:44:37,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:37,742 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:37,743 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 91 flow. Second operand 5 states and 522 transitions. [2023-01-27 19:44:37,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 78 transitions, 387 flow [2023-01-27 19:44:37,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 78 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:44:37,744 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 151 flow [2023-01-27 19:44:37,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2023-01-27 19:44:37,745 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-01-27 19:44:37,745 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 151 flow [2023-01-27 19:44:37,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-27 19:44:37,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:37,745 INFO L208 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] [2023-01-27 19:44:37,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:44:37,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:44:37,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:37,746 INFO L85 PathProgramCache]: Analyzing trace with hash 539503439, now seen corresponding path program 1 times [2023-01-27 19:44:37,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:37,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880943401] [2023-01-27 19:44:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:37,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:37,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:37,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880943401] [2023-01-27 19:44:37,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880943401] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:37,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197549889] [2023-01-27 19:44:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:37,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:37,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:44:37,820 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) [2023-01-27 19:44:37,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 19:44:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:37,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 19:44:37,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:44:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:38,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:44:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:38,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197549889] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:44:38,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:44:38,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-27 19:44:38,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69402268] [2023-01-27 19:44:38,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:44:38,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:44:38,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:38,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:44:38,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:44:38,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-27 19:44:38,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 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) [2023-01-27 19:44:38,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:38,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-27 19:44:38,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:38,383 INFO L130 PetriNetUnfolder]: 1309/1809 cut-off events. [2023-01-27 19:44:38,383 INFO L131 PetriNetUnfolder]: For 1975/1975 co-relation queries the response was YES. [2023-01-27 19:44:38,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5608 conditions, 1809 events. 1309/1809 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6397 event pairs, 291 based on Foata normal form. 68/1877 useless extension candidates. Maximal degree in co-relation 2898. Up to 757 conditions per place. [2023-01-27 19:44:38,393 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 98 selfloop transitions, 8 changer transitions 0/106 dead transitions. [2023-01-27 19:44:38,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 106 transitions, 641 flow [2023-01-27 19:44:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:38,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2023-01-27 19:44:38,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925925925925926 [2023-01-27 19:44:38,395 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2023-01-27 19:44:38,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2023-01-27 19:44:38,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:38,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2023-01-27 19:44:38,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 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) [2023-01-27 19:44:38,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:38,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:38,399 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 151 flow. Second operand 5 states and 532 transitions. [2023-01-27 19:44:38,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 106 transitions, 641 flow [2023-01-27 19:44:38,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 106 transitions, 641 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 19:44:38,404 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 206 flow [2023-01-27 19:44:38,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-01-27 19:44:38,405 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-01-27 19:44:38,406 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 206 flow [2023-01-27 19:44:38,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 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) [2023-01-27 19:44:38,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:38,406 INFO L208 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] [2023-01-27 19:44:38,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 19:44:38,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:38,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:44:38,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:38,612 INFO L85 PathProgramCache]: Analyzing trace with hash -905361945, now seen corresponding path program 2 times [2023-01-27 19:44:38,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:38,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918783593] [2023-01-27 19:44:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:38,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:38,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:38,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:38,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918783593] [2023-01-27 19:44:38,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918783593] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:38,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:38,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:44:38,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613350114] [2023-01-27 19:44:38,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:38,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:44:38,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:38,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:44:38,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:44:38,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-27 19:44:38,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-27 19:44:38,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:38,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-27 19:44:38,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:38,923 INFO L130 PetriNetUnfolder]: 1105/1509 cut-off events. [2023-01-27 19:44:38,923 INFO L131 PetriNetUnfolder]: For 2593/2593 co-relation queries the response was YES. [2023-01-27 19:44:38,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5565 conditions, 1509 events. 1105/1509 cut-off events. For 2593/2593 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5157 event pairs, 89 based on Foata normal form. 26/1535 useless extension candidates. Maximal degree in co-relation 3052. Up to 620 conditions per place. [2023-01-27 19:44:38,931 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 94 selfloop transitions, 11 changer transitions 0/105 dead transitions. [2023-01-27 19:44:38,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 105 transitions, 697 flow [2023-01-27 19:44:38,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 526 transitions. [2023-01-27 19:44:38,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48703703703703705 [2023-01-27 19:44:38,933 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 526 transitions. [2023-01-27 19:44:38,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 526 transitions. [2023-01-27 19:44:38,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:38,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 526 transitions. [2023-01-27 19:44:38,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 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) [2023-01-27 19:44:38,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:38,936 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:38,936 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 206 flow. Second operand 5 states and 526 transitions. [2023-01-27 19:44:38,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 105 transitions, 697 flow [2023-01-27 19:44:38,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 105 transitions, 697 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 19:44:38,942 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 267 flow [2023-01-27 19:44:38,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-01-27 19:44:38,943 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-01-27 19:44:38,943 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 267 flow [2023-01-27 19:44:38,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-27 19:44:38,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:38,944 INFO L208 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] [2023-01-27 19:44:38,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 19:44:38,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:44:38,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:38,944 INFO L85 PathProgramCache]: Analyzing trace with hash -114084107, now seen corresponding path program 1 times [2023-01-27 19:44:38,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:38,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806698618] [2023-01-27 19:44:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:38,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:39,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:39,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806698618] [2023-01-27 19:44:39,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806698618] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:39,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:39,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:44:39,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743452819] [2023-01-27 19:44:39,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:39,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:44:39,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:39,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:44:39,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:44:39,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-27 19:44:39,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-27 19:44:39,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:39,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-27 19:44:39,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:39,235 INFO L130 PetriNetUnfolder]: 1063/1467 cut-off events. [2023-01-27 19:44:39,235 INFO L131 PetriNetUnfolder]: For 3395/3395 co-relation queries the response was YES. [2023-01-27 19:44:39,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5790 conditions, 1467 events. 1063/1467 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5166 event pairs, 83 based on Foata normal form. 42/1509 useless extension candidates. Maximal degree in co-relation 3213. Up to 619 conditions per place. [2023-01-27 19:44:39,244 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 93 selfloop transitions, 8 changer transitions 2/103 dead transitions. [2023-01-27 19:44:39,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 103 transitions, 710 flow [2023-01-27 19:44:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 525 transitions. [2023-01-27 19:44:39,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2023-01-27 19:44:39,246 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 525 transitions. [2023-01-27 19:44:39,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 525 transitions. [2023-01-27 19:44:39,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:39,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 525 transitions. [2023-01-27 19:44:39,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-01-27 19:44:39,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:39,249 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:39,249 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 267 flow. Second operand 5 states and 525 transitions. [2023-01-27 19:44:39,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 103 transitions, 710 flow [2023-01-27 19:44:39,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 103 transitions, 699 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 19:44:39,254 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 270 flow [2023-01-27 19:44:39,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2023-01-27 19:44:39,255 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-01-27 19:44:39,255 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 270 flow [2023-01-27 19:44:39,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-27 19:44:39,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:39,256 INFO L208 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] [2023-01-27 19:44:39,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 19:44:39,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:44:39,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:39,256 INFO L85 PathProgramCache]: Analyzing trace with hash 555709242, now seen corresponding path program 1 times [2023-01-27 19:44:39,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:39,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323168995] [2023-01-27 19:44:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:39,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:39,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:39,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323168995] [2023-01-27 19:44:39,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323168995] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:39,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793811798] [2023-01-27 19:44:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:39,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:39,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:44:39,353 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) [2023-01-27 19:44:39,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 19:44:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:39,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 19:44:39,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:44:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:39,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:44:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:39,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793811798] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:44:39,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:44:39,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-27 19:44:39,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411217365] [2023-01-27 19:44:39,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:44:39,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:44:39,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:44:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:44:39,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-27 19:44:39,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 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) [2023-01-27 19:44:39,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:39,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-27 19:44:39,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:39,832 INFO L130 PetriNetUnfolder]: 1407/1959 cut-off events. [2023-01-27 19:44:39,832 INFO L131 PetriNetUnfolder]: For 4939/4939 co-relation queries the response was YES. [2023-01-27 19:44:39,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8040 conditions, 1959 events. 1407/1959 cut-off events. For 4939/4939 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7090 event pairs, 287 based on Foata normal form. 72/2031 useless extension candidates. Maximal degree in co-relation 4020. Up to 786 conditions per place. [2023-01-27 19:44:39,841 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 104 selfloop transitions, 10 changer transitions 0/114 dead transitions. [2023-01-27 19:44:39,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 114 transitions, 893 flow [2023-01-27 19:44:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:39,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:39,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 524 transitions. [2023-01-27 19:44:39,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48518518518518516 [2023-01-27 19:44:39,843 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 524 transitions. [2023-01-27 19:44:39,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 524 transitions. [2023-01-27 19:44:39,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:39,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 524 transitions. [2023-01-27 19:44:39,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2023-01-27 19:44:39,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:39,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:39,846 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 270 flow. Second operand 5 states and 524 transitions. [2023-01-27 19:44:39,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 114 transitions, 893 flow [2023-01-27 19:44:39,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 114 transitions, 860 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-27 19:44:39,850 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 315 flow [2023-01-27 19:44:39,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-01-27 19:44:39,851 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2023-01-27 19:44:39,851 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 315 flow [2023-01-27 19:44:39,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 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) [2023-01-27 19:44:39,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:39,851 INFO L208 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] [2023-01-27 19:44:39,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 19:44:40,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-27 19:44:40,057 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:44:40,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:40,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1193580880, now seen corresponding path program 2 times [2023-01-27 19:44:40,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:40,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666269885] [2023-01-27 19:44:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:40,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:40,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:40,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666269885] [2023-01-27 19:44:40,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666269885] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:40,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:40,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:44:40,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275889141] [2023-01-27 19:44:40,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:40,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:44:40,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:40,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:44:40,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:44:40,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-27 19:44:40,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-27 19:44:40,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:40,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-27 19:44:40,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:40,291 INFO L130 PetriNetUnfolder]: 1237/1713 cut-off events. [2023-01-27 19:44:40,291 INFO L131 PetriNetUnfolder]: For 4450/4450 co-relation queries the response was YES. [2023-01-27 19:44:40,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7555 conditions, 1713 events. 1237/1713 cut-off events. For 4450/4450 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6045 event pairs, 65 based on Foata normal form. 34/1747 useless extension candidates. Maximal degree in co-relation 5277. Up to 672 conditions per place. [2023-01-27 19:44:40,299 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 98 selfloop transitions, 9 changer transitions 4/111 dead transitions. [2023-01-27 19:44:40,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 111 transitions, 875 flow [2023-01-27 19:44:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2023-01-27 19:44:40,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824074074074074 [2023-01-27 19:44:40,301 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 521 transitions. [2023-01-27 19:44:40,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 521 transitions. [2023-01-27 19:44:40,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:40,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 521 transitions. [2023-01-27 19:44:40,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 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) [2023-01-27 19:44:40,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:40,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:40,303 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 315 flow. Second operand 5 states and 521 transitions. [2023-01-27 19:44:40,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 111 transitions, 875 flow [2023-01-27 19:44:40,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 866 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 19:44:40,311 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 319 flow [2023-01-27 19:44:40,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2023-01-27 19:44:40,311 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2023-01-27 19:44:40,311 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 319 flow [2023-01-27 19:44:40,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-27 19:44:40,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:40,312 INFO L208 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] [2023-01-27 19:44:40,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 19:44:40,312 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:44:40,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:40,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1446487525, now seen corresponding path program 2 times [2023-01-27 19:44:40,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:40,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757077233] [2023-01-27 19:44:40,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:40,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:40,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:40,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757077233] [2023-01-27 19:44:40,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757077233] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:40,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539786467] [2023-01-27 19:44:40,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:44:40,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:40,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:44:40,444 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:44:40,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 19:44:40,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 19:44:40,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:44:40,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 19:44:40,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:44:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:40,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:44:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:40,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539786467] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:44:40,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:44:40,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-27 19:44:40,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81472793] [2023-01-27 19:44:40,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:44:40,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 19:44:40,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:40,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 19:44:40,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 19:44:40,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 216 [2023-01-27 19:44:40,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 319 flow. Second operand has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-01-27 19:44:40,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:40,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 216 [2023-01-27 19:44:40,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:40,909 INFO L130 PetriNetUnfolder]: 1441/1985 cut-off events. [2023-01-27 19:44:40,910 INFO L131 PetriNetUnfolder]: For 5224/5224 co-relation queries the response was YES. [2023-01-27 19:44:40,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9185 conditions, 1985 events. 1441/1985 cut-off events. For 5224/5224 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7183 event pairs, 129 based on Foata normal form. 68/2053 useless extension candidates. Maximal degree in co-relation 5914. Up to 1119 conditions per place. [2023-01-27 19:44:40,921 INFO L137 encePairwiseOnDemand]: 209/216 looper letters, 114 selfloop transitions, 10 changer transitions 3/127 dead transitions. [2023-01-27 19:44:40,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 127 transitions, 994 flow [2023-01-27 19:44:40,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:44:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:44:40,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 594 transitions. [2023-01-27 19:44:40,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-01-27 19:44:40,923 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 594 transitions. [2023-01-27 19:44:40,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 594 transitions. [2023-01-27 19:44:40,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:40,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 594 transitions. [2023-01-27 19:44:40,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 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) [2023-01-27 19:44:40,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 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) [2023-01-27 19:44:40,926 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 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) [2023-01-27 19:44:40,926 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 319 flow. Second operand 6 states and 594 transitions. [2023-01-27 19:44:40,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 127 transitions, 994 flow [2023-01-27 19:44:40,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 127 transitions, 985 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:44:40,932 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 370 flow [2023-01-27 19:44:40,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2023-01-27 19:44:40,932 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2023-01-27 19:44:40,932 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 370 flow [2023-01-27 19:44:40,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-01-27 19:44:40,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:40,933 INFO L208 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] [2023-01-27 19:44:40,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 19:44:41,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:41,138 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:44:41,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:41,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2141398155, now seen corresponding path program 2 times [2023-01-27 19:44:41,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:41,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32814199] [2023-01-27 19:44:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:41,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:41,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:41,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32814199] [2023-01-27 19:44:41,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32814199] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:41,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:41,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:44:41,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987743524] [2023-01-27 19:44:41,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:41,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:44:41,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:41,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:44:41,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:44:41,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-27 19:44:41,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-27 19:44:41,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:41,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-27 19:44:41,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:41,432 INFO L130 PetriNetUnfolder]: 1657/2269 cut-off events. [2023-01-27 19:44:41,432 INFO L131 PetriNetUnfolder]: For 8538/8538 co-relation queries the response was YES. [2023-01-27 19:44:41,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11206 conditions, 2269 events. 1657/2269 cut-off events. For 8538/8538 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8107 event pairs, 481 based on Foata normal form. 68/2337 useless extension candidates. Maximal degree in co-relation 9738. Up to 1331 conditions per place. [2023-01-27 19:44:41,445 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 117 selfloop transitions, 8 changer transitions 0/125 dead transitions. [2023-01-27 19:44:41,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 125 transitions, 1158 flow [2023-01-27 19:44:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:41,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2023-01-27 19:44:41,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2023-01-27 19:44:41,446 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2023-01-27 19:44:41,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2023-01-27 19:44:41,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:41,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2023-01-27 19:44:41,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 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) [2023-01-27 19:44:41,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:41,449 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-27 19:44:41,449 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 370 flow. Second operand 5 states and 522 transitions. [2023-01-27 19:44:41,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 125 transitions, 1158 flow [2023-01-27 19:44:41,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 125 transitions, 1105 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-01-27 19:44:41,459 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 404 flow [2023-01-27 19:44:41,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=404, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2023-01-27 19:44:41,459 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 36 predicate places. [2023-01-27 19:44:41,459 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 404 flow [2023-01-27 19:44:41,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-27 19:44:41,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:41,460 INFO L208 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] [2023-01-27 19:44:41,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 19:44:41,460 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:44:41,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash -567521946, now seen corresponding path program 1 times [2023-01-27 19:44:41,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:41,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357345244] [2023-01-27 19:44:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:41,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:41,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:41,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357345244] [2023-01-27 19:44:41,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357345244] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:41,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947462608] [2023-01-27 19:44:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:41,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:41,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:44:41,907 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:44:41,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 19:44:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:42,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-27 19:44:42,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:44:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:48,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:44:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:50,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947462608] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:44:50,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:44:50,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2023-01-27 19:44:50,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313972240] [2023-01-27 19:44:50,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:44:50,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 19:44:50,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 19:44:50,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-01-27 19:44:50,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 216 [2023-01-27 19:44:50,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 404 flow. Second operand has 14 states, 14 states have (on average 88.42857142857143) internal successors, (1238), 14 states have internal predecessors, (1238), 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) [2023-01-27 19:44:50,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:50,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 216 [2023-01-27 19:44:50,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:53,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:44:56,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:44:59,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:01,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:03,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:09,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:12,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:15,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:17,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:20,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:23,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:26,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:28,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:30,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:32,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:34,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:36,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:38,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:40,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:44,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:48,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:51,097 INFO L130 PetriNetUnfolder]: 2861/3956 cut-off events. [2023-01-27 19:45:51,097 INFO L131 PetriNetUnfolder]: For 14168/14168 co-relation queries the response was YES. [2023-01-27 19:45:51,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20517 conditions, 3956 events. 2861/3956 cut-off events. For 14168/14168 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16242 event pairs, 351 based on Foata normal form. 3/3959 useless extension candidates. Maximal degree in co-relation 18734. Up to 2285 conditions per place. [2023-01-27 19:45:51,121 INFO L137 encePairwiseOnDemand]: 208/216 looper letters, 215 selfloop transitions, 90 changer transitions 10/315 dead transitions. [2023-01-27 19:45:51,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 315 transitions, 2714 flow [2023-01-27 19:45:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 19:45:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 19:45:51,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1573 transitions. [2023-01-27 19:45:51,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45515046296296297 [2023-01-27 19:45:51,125 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1573 transitions. [2023-01-27 19:45:51,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1573 transitions. [2023-01-27 19:45:51,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:45:51,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1573 transitions. [2023-01-27 19:45:51,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.3125) internal successors, (1573), 16 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:45:51,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 216.0) internal successors, (3672), 17 states have internal predecessors, (3672), 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) [2023-01-27 19:45:51,132 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 216.0) internal successors, (3672), 17 states have internal predecessors, (3672), 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) [2023-01-27 19:45:51,132 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 404 flow. Second operand 16 states and 1573 transitions. [2023-01-27 19:45:51,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 315 transitions, 2714 flow [2023-01-27 19:45:51,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 315 transitions, 2588 flow, removed 38 selfloop flow, removed 2 redundant places. [2023-01-27 19:45:51,161 INFO L231 Difference]: Finished difference. Result has 90 places, 142 transitions, 1479 flow [2023-01-27 19:45:51,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1479, PETRI_PLACES=90, PETRI_TRANSITIONS=142} [2023-01-27 19:45:51,162 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 56 predicate places. [2023-01-27 19:45:51,162 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 142 transitions, 1479 flow [2023-01-27 19:45:51,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 88.42857142857143) internal successors, (1238), 14 states have internal predecessors, (1238), 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) [2023-01-27 19:45:51,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:45:51,163 INFO L208 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] [2023-01-27 19:45:51,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 19:45:51,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:45:51,368 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:45:51,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:45:51,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1310504207, now seen corresponding path program 1 times [2023-01-27 19:45:51,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:45:51,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006287769] [2023-01-27 19:45:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:45:51,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:45:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:45:51,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:45:51,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:45:51,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006287769] [2023-01-27 19:45:51,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006287769] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:45:51,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106029210] [2023-01-27 19:45:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:45:51,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:45:51,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:45:51,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:45:51,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 19:45:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:45:52,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 19:45:52,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:46:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:26,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:49:44,543 WARN L222 SmtUtils]: Spent 3.18m on a formula simplification. DAG size of input: 3055 DAG size of output: 3017 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-27 19:59:10,534 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:59:10,550 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:59:11,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-27 19:59:11,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown