/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/array-eq-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:43:21,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:43:21,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:43:21,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:43:21,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:43:21,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:43:21,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:43:21,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:43:21,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:43:21,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:43:21,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:43:21,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:43:21,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:43:21,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:43:21,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:43:21,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:43:21,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:43:21,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:43:21,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:43:21,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:43:21,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:43:21,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:43:21,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:43:21,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:43:21,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 19:43:21,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 19:43:21,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 19:43:21,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 19:43:21,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 19:43:21,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 19:43:21,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 19:43:21,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 19:43:21,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 19:43:21,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 19:43:21,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 19:43:21,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 19:43:21,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 19:43:21,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 19:43:21,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:43:21,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:43:21,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:43:21,177 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 19:43:21,208 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:43:21,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:43:21,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:43:21,209 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:43:21,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:43:21,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:43:21,211 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:43:21,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:43:21,211 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:43:21,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:43:21,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:43:21,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:43:21,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:43:21,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:43:21,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:43:21,212 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:43:21,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:43:21,213 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:43:21,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:43:21,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:43:21,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:43:21,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:43:21,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:43:21,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:43:21,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:43:21,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:43:21,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:43:21,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:43:21,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:43:21,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:43:21,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:43:21,215 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:43:21,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:43:21,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:43:21,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:43:21,488 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:43:21,488 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:43:21,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-01-27 19:43:22,719 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:43:22,933 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:43:22,933 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-01-27 19:43:22,938 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4501ada6b/f2af8e4dc3c54f11a8aad67a3a66d0fd/FLAG2fc2478b3 [2023-01-27 19:43:22,949 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4501ada6b/f2af8e4dc3c54f11a8aad67a3a66d0fd [2023-01-27 19:43:22,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:43:22,952 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:43:22,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:43:22,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:43:22,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:43:22,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:43:22" (1/1) ... [2023-01-27 19:43:22,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88d25e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:22, skipping insertion in model container [2023-01-27 19:43:22,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:43:22" (1/1) ... [2023-01-27 19:43:22,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:43:22,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:43:23,168 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/array-eq-trans.wvr.c[2737,2750] [2023-01-27 19:43:23,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:43:23,195 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:43:23,217 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/array-eq-trans.wvr.c[2737,2750] [2023-01-27 19:43:23,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:43:23,233 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:43:23,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23 WrapperNode [2023-01-27 19:43:23,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:43:23,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:43:23,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:43:23,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:43:23,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23" (1/1) ... [2023-01-27 19:43:23,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23" (1/1) ... [2023-01-27 19:43:23,284 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 210 [2023-01-27 19:43:23,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:43:23,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:43:23,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:43:23,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:43:23,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23" (1/1) ... [2023-01-27 19:43:23,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23" (1/1) ... [2023-01-27 19:43:23,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23" (1/1) ... [2023-01-27 19:43:23,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23" (1/1) ... [2023-01-27 19:43:23,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23" (1/1) ... [2023-01-27 19:43:23,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23" (1/1) ... [2023-01-27 19:43:23,309 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23" (1/1) ... [2023-01-27 19:43:23,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23" (1/1) ... [2023-01-27 19:43:23,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:43:23,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:43:23,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:43:23,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:43:23,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23" (1/1) ... [2023-01-27 19:43:23,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:43:23,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:43:23,358 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 19:43:23,382 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 19:43:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:43:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 19:43:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 19:43:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 19:43:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 19:43:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 19:43:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 19:43:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:43:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:43:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:43:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 19:43:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:43:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:43:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:43:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:43:23,404 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 19:43:23,492 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:43:23,494 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:43:23,953 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:43:23,964 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:43:23,964 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-27 19:43:23,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:43:23 BoogieIcfgContainer [2023-01-27 19:43:23,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:43:23,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:43:23,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:43:23,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:43:23,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:43:22" (1/3) ... [2023-01-27 19:43:23,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418c014c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:43:23, skipping insertion in model container [2023-01-27 19:43:23,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:43:23" (2/3) ... [2023-01-27 19:43:23,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418c014c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:43:23, skipping insertion in model container [2023-01-27 19:43:23,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:43:23" (3/3) ... [2023-01-27 19:43:23,975 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-01-27 19:43:23,993 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:43:23,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 19:43:23,993 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:43:24,065 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 19:43:24,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 287 transitions, 598 flow [2023-01-27 19:43:24,253 INFO L130 PetriNetUnfolder]: 30/284 cut-off events. [2023-01-27 19:43:24,253 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 19:43:24,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 284 events. 30/284 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 244 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 189. Up to 3 conditions per place. [2023-01-27 19:43:24,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 287 transitions, 598 flow [2023-01-27 19:43:24,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 274 transitions, 566 flow [2023-01-27 19:43:24,273 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:43:24,295 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 274 transitions, 566 flow [2023-01-27 19:43:24,297 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 274 transitions, 566 flow [2023-01-27 19:43:24,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 274 transitions, 566 flow [2023-01-27 19:43:24,361 INFO L130 PetriNetUnfolder]: 30/274 cut-off events. [2023-01-27 19:43:24,361 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 19:43:24,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 274 events. 30/274 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 243 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 189. Up to 3 conditions per place. [2023-01-27 19:43:24,366 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-01-27 19:43:34,742 INFO L134 LiptonReduction]: Checked pairs total: 3952 [2023-01-27 19:43:34,742 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-01-27 19:43:34,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:43:34,761 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25e2d26b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:43:34,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 19:43:34,769 INFO L130 PetriNetUnfolder]: 8/28 cut-off events. [2023-01-27 19:43:34,769 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 19:43:34,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:43:34,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:43:34,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:43:34,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:43:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash 640432984, now seen corresponding path program 1 times [2023-01-27 19:43:34,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:43:34,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121630535] [2023-01-27 19:43:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:43:34,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:43:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:43:35,668 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 19:43:35,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:43:35,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121630535] [2023-01-27 19:43:35,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121630535] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:43:35,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:43:35,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 19:43:35,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425354005] [2023-01-27 19:43:35,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:43:35,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:43:35,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:43:35,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:43:35,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:43:35,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 602 [2023-01-27 19:43:35,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 200.16666666666666) internal successors, (1201), 6 states have internal predecessors, (1201), 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 19:43:35,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:43:35,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 602 [2023-01-27 19:43:35,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:43:35,947 INFO L130 PetriNetUnfolder]: 301/444 cut-off events. [2023-01-27 19:43:35,947 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-01-27 19:43:35,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 444 events. 301/444 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1151 event pairs, 154 based on Foata normal form. 1/297 useless extension candidates. Maximal degree in co-relation 484. Up to 291 conditions per place. [2023-01-27 19:43:35,954 INFO L137 encePairwiseOnDemand]: 592/602 looper letters, 28 selfloop transitions, 6 changer transitions 18/52 dead transitions. [2023-01-27 19:43:35,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 244 flow [2023-01-27 19:43:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:43:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:43:35,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1237 transitions. [2023-01-27 19:43:35,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34246954595791806 [2023-01-27 19:43:35,977 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1237 transitions. [2023-01-27 19:43:35,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1237 transitions. [2023-01-27 19:43:35,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:43:35,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1237 transitions. [2023-01-27 19:43:35,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 206.16666666666666) internal successors, (1237), 6 states have internal predecessors, (1237), 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 19:43:35,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 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 19:43:35,999 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 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 19:43:36,001 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 76 flow. Second operand 6 states and 1237 transitions. [2023-01-27 19:43:36,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 244 flow [2023-01-27 19:43:36,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 52 transitions, 220 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 19:43:36,007 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 112 flow [2023-01-27 19:43:36,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2023-01-27 19:43:36,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-01-27 19:43:36,012 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 112 flow [2023-01-27 19:43:36,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 200.16666666666666) internal successors, (1201), 6 states have internal predecessors, (1201), 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 19:43:36,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:43:36,013 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] [2023-01-27 19:43:36,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:43:36,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:43:36,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:43:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash 529232224, now seen corresponding path program 1 times [2023-01-27 19:43:36,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:43:36,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524878286] [2023-01-27 19:43:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:43:36,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:43:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:43:36,180 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 19:43:36,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:43:36,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524878286] [2023-01-27 19:43:36,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524878286] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:43:36,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988356287] [2023-01-27 19:43:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:43:36,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:43:36,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:43:36,185 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 19:43:36,187 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 19:43:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:43:36,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 19:43:36,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:43:36,562 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 19:43:36,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:43:37,350 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:43:37,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 222 [2023-01-27 19:43:37,639 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:43:37,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 186 treesize of output 366 [2023-01-27 19:43:46,954 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:47,163 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:47,300 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:48,064 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:48,325 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:48,469 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:48,616 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:48,665 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:48,806 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:48,900 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 19:43:48,931 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:48,974 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 19:43:48,997 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:49,035 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 19:43:49,060 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:49,097 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:50,316 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:52,956 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:43:53,144 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:04,229 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:13,068 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:13,090 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:13,143 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:13,155 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:13,165 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 19:44:13,193 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:13,211 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:13,219 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 19:44:13,262 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:13,293 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:13,326 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:13,335 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 19:44:13,536 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:13,655 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 19:44:13,807 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 19:44:13,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988356287] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:13,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:44:13,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2023-01-27 19:44:13,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631280271] [2023-01-27 19:44:13,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:13,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:44:13,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:13,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:44:13,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-01-27 19:44:13,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 602 [2023-01-27 19:44:13,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 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 19:44:13,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:13,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 602 [2023-01-27 19:44:13,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:14,007 INFO L130 PetriNetUnfolder]: 536/777 cut-off events. [2023-01-27 19:44:14,007 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-01-27 19:44:14,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 777 events. 536/777 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2425 event pairs, 154 based on Foata normal form. 1/625 useless extension candidates. Maximal degree in co-relation 1285. Up to 288 conditions per place. [2023-01-27 19:44:14,011 INFO L137 encePairwiseOnDemand]: 594/602 looper letters, 69 selfloop transitions, 7 changer transitions 17/93 dead transitions. [2023-01-27 19:44:14,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 93 transitions, 454 flow [2023-01-27 19:44:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1136 transitions. [2023-01-27 19:44:14,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740863787375417 [2023-01-27 19:44:14,015 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1136 transitions. [2023-01-27 19:44:14,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1136 transitions. [2023-01-27 19:44:14,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:14,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1136 transitions. [2023-01-27 19:44:14,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 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 19:44:14,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 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 19:44:14,025 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 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 19:44:14,025 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 112 flow. Second operand 5 states and 1136 transitions. [2023-01-27 19:44:14,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 93 transitions, 454 flow [2023-01-27 19:44:14,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 93 transitions, 438 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-27 19:44:14,029 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 143 flow [2023-01-27 19:44:14,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-01-27 19:44:14,029 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-01-27 19:44:14,030 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 143 flow [2023-01-27 19:44:14,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 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 19:44:14,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:14,030 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] [2023-01-27 19:44:14,040 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 19:44:14,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:14,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:44:14,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:14,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1369199754, now seen corresponding path program 1 times [2023-01-27 19:44:14,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:14,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615855027] [2023-01-27 19:44:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:14,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:14,551 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 19:44:14,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:14,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615855027] [2023-01-27 19:44:14,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615855027] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:14,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322052839] [2023-01-27 19:44:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:14,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:14,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:44:14,557 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 19:44:14,579 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 19:44:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:14,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 19:44:14,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:44:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:44:14,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 19:44:14,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322052839] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:14,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 19:44:14,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-01-27 19:44:14,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311188543] [2023-01-27 19:44:14,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:14,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:44:14,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:14,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:44:14,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-27 19:44:14,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 602 [2023-01-27 19:44:14,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 19:44:14,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:14,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 602 [2023-01-27 19:44:14,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:15,014 INFO L130 PetriNetUnfolder]: 896/1316 cut-off events. [2023-01-27 19:44:15,015 INFO L131 PetriNetUnfolder]: For 687/687 co-relation queries the response was YES. [2023-01-27 19:44:15,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3221 conditions, 1316 events. 896/1316 cut-off events. For 687/687 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4820 event pairs, 261 based on Foata normal form. 61/1145 useless extension candidates. Maximal degree in co-relation 3197. Up to 667 conditions per place. [2023-01-27 19:44:15,022 INFO L137 encePairwiseOnDemand]: 593/602 looper letters, 80 selfloop transitions, 13 changer transitions 3/96 dead transitions. [2023-01-27 19:44:15,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 513 flow [2023-01-27 19:44:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:44:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:44:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1313 transitions. [2023-01-27 19:44:15,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3635105204872647 [2023-01-27 19:44:15,027 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1313 transitions. [2023-01-27 19:44:15,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1313 transitions. [2023-01-27 19:44:15,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:15,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1313 transitions. [2023-01-27 19:44:15,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.83333333333334) internal successors, (1313), 6 states have internal predecessors, (1313), 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 19:44:15,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 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 19:44:15,037 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 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 19:44:15,037 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 143 flow. Second operand 6 states and 1313 transitions. [2023-01-27 19:44:15,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 513 flow [2023-01-27 19:44:15,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 509 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 19:44:15,041 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 236 flow [2023-01-27 19:44:15,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-01-27 19:44:15,042 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2023-01-27 19:44:15,042 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 236 flow [2023-01-27 19:44:15,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 19:44:15,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:15,043 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] [2023-01-27 19:44:15,050 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 19:44:15,249 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,SelfDestructingSolverStorable2 [2023-01-27 19:44:15,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:44:15,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:15,250 INFO L85 PathProgramCache]: Analyzing trace with hash 581163285, now seen corresponding path program 1 times [2023-01-27 19:44:15,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:15,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705565846] [2023-01-27 19:44:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:15,454 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 19:44:15,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705565846] [2023-01-27 19:44:15,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705565846] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764221643] [2023-01-27 19:44:15,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:15,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:15,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:44:15,457 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 19:44:15,459 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 19:44:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:15,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 19:44:15,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:44:15,735 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 19:44:15,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:44:16,171 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:44:16,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 222 [2023-01-27 19:44:16,411 INFO L321 Elim1Store]: treesize reduction 85, result has 62.9 percent of original size [2023-01-27 19:44:16,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 186 treesize of output 281 [2023-01-27 19:44:17,105 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 19:44:17,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764221643] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:17,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:44:17,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 12 [2023-01-27 19:44:17,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969854233] [2023-01-27 19:44:17,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:17,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:44:17,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:17,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:44:17,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-01-27 19:44:17,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 602 [2023-01-27 19:44:17,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 196.33333333333334) internal successors, (1178), 6 states have internal predecessors, (1178), 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 19:44:17,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:17,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 602 [2023-01-27 19:44:17,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:17,472 INFO L130 PetriNetUnfolder]: 1680/2510 cut-off events. [2023-01-27 19:44:17,472 INFO L131 PetriNetUnfolder]: For 2544/2544 co-relation queries the response was YES. [2023-01-27 19:44:17,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6941 conditions, 2510 events. 1680/2510 cut-off events. For 2544/2544 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11146 event pairs, 261 based on Foata normal form. 2/2102 useless extension candidates. Maximal degree in co-relation 5554. Up to 1282 conditions per place. [2023-01-27 19:44:17,485 INFO L137 encePairwiseOnDemand]: 596/602 looper letters, 75 selfloop transitions, 14 changer transitions 1/90 dead transitions. [2023-01-27 19:44:17,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 90 transitions, 613 flow [2023-01-27 19:44:17,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:44:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:44:17,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 839 transitions. [2023-01-27 19:44:17,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.348421926910299 [2023-01-27 19:44:17,488 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 839 transitions. [2023-01-27 19:44:17,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 839 transitions. [2023-01-27 19:44:17,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:17,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 839 transitions. [2023-01-27 19:44:17,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 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 19:44:17,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 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 19:44:17,495 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 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 19:44:17,495 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 236 flow. Second operand 4 states and 839 transitions. [2023-01-27 19:44:17,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 90 transitions, 613 flow [2023-01-27 19:44:17,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 90 transitions, 595 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-01-27 19:44:17,501 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 372 flow [2023-01-27 19:44:17,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2023-01-27 19:44:17,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2023-01-27 19:44:17,502 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 372 flow [2023-01-27 19:44:17,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 196.33333333333334) internal successors, (1178), 6 states have internal predecessors, (1178), 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 19:44:17,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:17,503 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 19:44:17,512 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 19:44:17,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:17,710 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:44:17,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:17,711 INFO L85 PathProgramCache]: Analyzing trace with hash -311930904, now seen corresponding path program 1 times [2023-01-27 19:44:17,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:17,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923003356] [2023-01-27 19:44:17,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:17,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:44:17,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:17,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923003356] [2023-01-27 19:44:17,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923003356] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:17,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:17,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:44:17,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106547892] [2023-01-27 19:44:17,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:17,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:44:17,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:17,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:44:17,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:44:17,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 602 [2023-01-27 19:44:17,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 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 19:44:17,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:17,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 602 [2023-01-27 19:44:17,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:18,283 INFO L130 PetriNetUnfolder]: 2829/4372 cut-off events. [2023-01-27 19:44:18,283 INFO L131 PetriNetUnfolder]: For 9703/9703 co-relation queries the response was YES. [2023-01-27 19:44:18,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13235 conditions, 4372 events. 2829/4372 cut-off events. For 9703/9703 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 22502 event pairs, 1934 based on Foata normal form. 376/4746 useless extension candidates. Maximal degree in co-relation 8290. Up to 1611 conditions per place. [2023-01-27 19:44:18,317 INFO L137 encePairwiseOnDemand]: 595/602 looper letters, 111 selfloop transitions, 6 changer transitions 2/119 dead transitions. [2023-01-27 19:44:18,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 119 transitions, 924 flow [2023-01-27 19:44:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1158 transitions. [2023-01-27 19:44:18,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3847176079734219 [2023-01-27 19:44:18,321 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1158 transitions. [2023-01-27 19:44:18,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1158 transitions. [2023-01-27 19:44:18,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:18,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1158 transitions. [2023-01-27 19:44:18,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 231.6) internal successors, (1158), 5 states have internal predecessors, (1158), 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 19:44:18,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 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 19:44:18,330 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 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 19:44:18,331 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 372 flow. Second operand 5 states and 1158 transitions. [2023-01-27 19:44:18,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 119 transitions, 924 flow [2023-01-27 19:44:18,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 119 transitions, 920 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-27 19:44:18,343 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 413 flow [2023-01-27 19:44:18,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-01-27 19:44:18,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2023-01-27 19:44:18,346 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 413 flow [2023-01-27 19:44:18,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 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 19:44:18,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:18,347 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 19:44:18,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 19:44:18,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:44:18,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:18,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1484325975, now seen corresponding path program 1 times [2023-01-27 19:44:18,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:18,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975533966] [2023-01-27 19:44:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:18,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:44:18,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:18,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975533966] [2023-01-27 19:44:18,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975533966] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:18,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:18,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:44:18,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454244251] [2023-01-27 19:44:18,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:18,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:44:18,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:18,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:44:18,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:44:18,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 602 [2023-01-27 19:44:18,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 220.5) internal successors, (882), 4 states have internal predecessors, (882), 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 19:44:18,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:18,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 602 [2023-01-27 19:44:18,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:18,758 INFO L130 PetriNetUnfolder]: 1379/2138 cut-off events. [2023-01-27 19:44:18,758 INFO L131 PetriNetUnfolder]: For 5296/5296 co-relation queries the response was YES. [2023-01-27 19:44:18,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6941 conditions, 2138 events. 1379/2138 cut-off events. For 5296/5296 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9528 event pairs, 885 based on Foata normal form. 88/2226 useless extension candidates. Maximal degree in co-relation 5208. Up to 1478 conditions per place. [2023-01-27 19:44:18,774 INFO L137 encePairwiseOnDemand]: 595/602 looper letters, 93 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2023-01-27 19:44:18,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 755 flow [2023-01-27 19:44:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:18,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1151 transitions. [2023-01-27 19:44:18,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3823920265780731 [2023-01-27 19:44:18,778 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1151 transitions. [2023-01-27 19:44:18,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1151 transitions. [2023-01-27 19:44:18,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:18,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1151 transitions. [2023-01-27 19:44:18,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 230.2) internal successors, (1151), 5 states have internal predecessors, (1151), 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 19:44:18,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 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 19:44:18,785 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 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 19:44:18,785 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 413 flow. Second operand 5 states and 1151 transitions. [2023-01-27 19:44:18,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 755 flow [2023-01-27 19:44:18,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 709 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-01-27 19:44:18,795 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 381 flow [2023-01-27 19:44:18,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-01-27 19:44:18,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2023-01-27 19:44:18,797 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 381 flow [2023-01-27 19:44:18,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.5) internal successors, (882), 4 states have internal predecessors, (882), 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 19:44:18,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:18,798 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 19:44:18,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 19:44:18,798 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:44:18,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:18,805 INFO L85 PathProgramCache]: Analyzing trace with hash 13136424, now seen corresponding path program 1 times [2023-01-27 19:44:18,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:18,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290876055] [2023-01-27 19:44:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:18,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:44:18,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:18,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290876055] [2023-01-27 19:44:18,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290876055] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:18,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:18,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 19:44:18,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560890223] [2023-01-27 19:44:18,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:18,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:44:18,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:44:18,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 19:44:18,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 602 [2023-01-27 19:44:18,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 381 flow. Second operand has 5 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 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 19:44:18,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:18,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 602 [2023-01-27 19:44:18,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:19,253 INFO L130 PetriNetUnfolder]: 1607/2478 cut-off events. [2023-01-27 19:44:19,253 INFO L131 PetriNetUnfolder]: For 4682/4682 co-relation queries the response was YES. [2023-01-27 19:44:19,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7804 conditions, 2478 events. 1607/2478 cut-off events. For 4682/4682 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11362 event pairs, 853 based on Foata normal form. 40/2518 useless extension candidates. Maximal degree in co-relation 6080. Up to 1477 conditions per place. [2023-01-27 19:44:19,273 INFO L137 encePairwiseOnDemand]: 595/602 looper letters, 61 selfloop transitions, 10 changer transitions 43/114 dead transitions. [2023-01-27 19:44:19,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 114 transitions, 850 flow [2023-01-27 19:44:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:44:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:44:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1372 transitions. [2023-01-27 19:44:19,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798449612403101 [2023-01-27 19:44:19,278 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1372 transitions. [2023-01-27 19:44:19,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1372 transitions. [2023-01-27 19:44:19,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:19,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1372 transitions. [2023-01-27 19:44:19,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 228.66666666666666) internal successors, (1372), 6 states have internal predecessors, (1372), 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 19:44:19,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 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 19:44:19,287 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 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 19:44:19,287 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 381 flow. Second operand 6 states and 1372 transitions. [2023-01-27 19:44:19,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 114 transitions, 850 flow [2023-01-27 19:44:19,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 114 transitions, 838 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 19:44:19,295 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 365 flow [2023-01-27 19:44:19,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-01-27 19:44:19,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2023-01-27 19:44:19,298 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 365 flow [2023-01-27 19:44:19,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 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 19:44:19,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:19,299 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 19:44:19,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 19:44:19,299 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:44:19,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:19,299 INFO L85 PathProgramCache]: Analyzing trace with hash 300584546, now seen corresponding path program 1 times [2023-01-27 19:44:19,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:19,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365668145] [2023-01-27 19:44:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:19,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:44:19,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:19,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365668145] [2023-01-27 19:44:19,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365668145] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:19,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:19,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 19:44:19,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400889454] [2023-01-27 19:44:19,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:19,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:44:19,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:19,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:44:19,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 19:44:19,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 602 [2023-01-27 19:44:19,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 365 flow. Second operand has 5 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 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 19:44:19,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:19,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 602 [2023-01-27 19:44:19,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:19,797 INFO L130 PetriNetUnfolder]: 2159/3261 cut-off events. [2023-01-27 19:44:19,797 INFO L131 PetriNetUnfolder]: For 8565/8565 co-relation queries the response was YES. [2023-01-27 19:44:19,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11073 conditions, 3261 events. 2159/3261 cut-off events. For 8565/8565 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15104 event pairs, 810 based on Foata normal form. 86/3347 useless extension candidates. Maximal degree in co-relation 9988. Up to 1517 conditions per place. [2023-01-27 19:44:19,829 INFO L137 encePairwiseOnDemand]: 596/602 looper letters, 91 selfloop transitions, 9 changer transitions 1/101 dead transitions. [2023-01-27 19:44:19,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 101 transitions, 855 flow [2023-01-27 19:44:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:19,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1145 transitions. [2023-01-27 19:44:19,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3803986710963455 [2023-01-27 19:44:19,834 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1145 transitions. [2023-01-27 19:44:19,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1145 transitions. [2023-01-27 19:44:19,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:19,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1145 transitions. [2023-01-27 19:44:19,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 19:44:19,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 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 19:44:19,841 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 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 19:44:19,842 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 365 flow. Second operand 5 states and 1145 transitions. [2023-01-27 19:44:19,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 101 transitions, 855 flow [2023-01-27 19:44:19,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 101 transitions, 799 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-01-27 19:44:19,853 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 401 flow [2023-01-27 19:44:19,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-01-27 19:44:19,855 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2023-01-27 19:44:19,856 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 401 flow [2023-01-27 19:44:19,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 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 19:44:19,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:19,856 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 19:44:19,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 19:44:19,857 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:44:19,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:19,857 INFO L85 PathProgramCache]: Analyzing trace with hash -642179503, now seen corresponding path program 1 times [2023-01-27 19:44:19,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:19,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30437199] [2023-01-27 19:44:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:19,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:44:20,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:20,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30437199] [2023-01-27 19:44:20,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30437199] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:20,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534874968] [2023-01-27 19:44:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:20,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:20,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:44:20,054 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 19:44:20,076 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 19:44:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:20,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 19:44:20,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:44:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:44:20,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:44:20,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:44:20,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 222 [2023-01-27 19:44:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:44:20,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534874968] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:20,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:44:20,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 11 [2023-01-27 19:44:20,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661517603] [2023-01-27 19:44:20,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:20,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:44:20,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:20,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:44:20,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-01-27 19:44:20,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 602 [2023-01-27 19:44:20,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 401 flow. Second operand has 6 states, 6 states have (on average 212.83333333333334) internal successors, (1277), 6 states have internal predecessors, (1277), 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 19:44:20,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:20,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 602 [2023-01-27 19:44:20,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:21,347 INFO L130 PetriNetUnfolder]: 2312/3546 cut-off events. [2023-01-27 19:44:21,347 INFO L131 PetriNetUnfolder]: For 7720/7720 co-relation queries the response was YES. [2023-01-27 19:44:21,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12013 conditions, 3546 events. 2312/3546 cut-off events. For 7720/7720 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17305 event pairs, 667 based on Foata normal form. 6/3552 useless extension candidates. Maximal degree in co-relation 10955. Up to 1306 conditions per place. [2023-01-27 19:44:21,370 INFO L137 encePairwiseOnDemand]: 595/602 looper letters, 81 selfloop transitions, 11 changer transitions 20/112 dead transitions. [2023-01-27 19:44:21,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 112 transitions, 927 flow [2023-01-27 19:44:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 19:44:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 19:44:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1542 transitions. [2023-01-27 19:44:21,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3659231134314191 [2023-01-27 19:44:21,376 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1542 transitions. [2023-01-27 19:44:21,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1542 transitions. [2023-01-27 19:44:21,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:21,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1542 transitions. [2023-01-27 19:44:21,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 220.28571428571428) internal successors, (1542), 7 states have internal predecessors, (1542), 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 19:44:21,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 602.0) internal successors, (4816), 8 states have internal predecessors, (4816), 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 19:44:21,399 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 602.0) internal successors, (4816), 8 states have internal predecessors, (4816), 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 19:44:21,399 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 401 flow. Second operand 7 states and 1542 transitions. [2023-01-27 19:44:21,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 112 transitions, 927 flow [2023-01-27 19:44:21,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 915 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 19:44:21,410 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 431 flow [2023-01-27 19:44:21,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=431, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2023-01-27 19:44:21,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2023-01-27 19:44:21,416 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 431 flow [2023-01-27 19:44:21,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.83333333333334) internal successors, (1277), 6 states have internal predecessors, (1277), 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 19:44:21,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:21,417 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 19:44:21,426 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 19:44:21,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:21,623 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 19:44:21,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:21,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1317452410, now seen corresponding path program 1 times [2023-01-27 19:44:21,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:21,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553461061] [2023-01-27 19:44:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:21,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:44:22,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:22,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553461061] [2023-01-27 19:44:22,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553461061] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:22,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71712228] [2023-01-27 19:44:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:22,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:22,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:44:22,189 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 19:44:22,191 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 19:44:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:22,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 53 conjunts are in the unsatisfiable core [2023-01-27 19:44:22,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:44:22,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 19:44:22,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 19:44:22,565 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 19:44:22,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-01-27 19:44:22,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 19:44:22,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 19:44:22,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 19:44:22,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 19:44:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:23,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:44:24,254 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse17 (* c_~i_BC~0 4)) (.cse18 (* c_~i_AB~0 4)) (.cse19 (* c_~i_AC~0 4))) (let ((.cse0 (= c_~i_AB~0 c_~i_AC~0)) (.cse11 (< c_~i_AC~0 c_~Cn~0)) (.cse5 (+ c_~A~0.offset .cse19)) (.cse6 (+ c_~C~0.offset .cse19)) (.cse9 (+ c_~B~0.offset .cse18)) (.cse10 (+ c_~A~0.offset .cse18)) (.cse2 (+ c_~C~0.offset .cse17)) (.cse4 (+ .cse17 c_~B~0.offset))) (and (or .cse0 (forall ((v_ArrVal_404 (Array Int Int)) (~A~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (let ((.cse1 (select .cse3 c_~C~0.base))) (or (< (select .cse1 .cse2) (select (select .cse3 c_~B~0.base) .cse4)) (<= (select (select .cse3 ~A~0.base) .cse5) (select .cse1 .cse6))))))) (or (forall ((v_ArrVal_404 (Array Int Int)) (~A~0.base Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (let ((.cse8 (select .cse7 c_~B~0.base))) (or (< (select (select .cse7 c_~C~0.base) .cse2) (select .cse8 .cse4)) (< (select .cse8 .cse9) (select (select .cse7 ~A~0.base) .cse10)))))) .cse11) (or .cse0 (forall ((v_ArrVal_404 (Array Int Int))) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (< (select (select .cse12 c_~C~0.base) .cse2) (select (select .cse12 c_~B~0.base) .cse4)))) .cse11) (forall ((v_ArrVal_404 (Array Int Int))) (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (let ((.cse14 (select .cse16 c_~C~0.base)) (.cse15 (select .cse16 c_~B~0.base))) (or (forall ((~A~0.base Int)) (let ((.cse13 (select .cse16 ~A~0.base))) (or (<= (select .cse13 .cse5) (select .cse14 .cse6)) (< (select .cse15 .cse9) (select .cse13 .cse10))))) (< (select .cse14 .cse2) (select .cse15 .cse4))))))))) is different from false [2023-01-27 19:44:24,661 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse17 (* c_~i_AB~0 4)) (.cse18 (* c_~i_BC~0 4)) (.cse19 (* c_~i_AC~0 4))) (let ((.cse0 (= c_~i_AB~0 c_~i_AC~0)) (.cse5 (+ c_~A~0.offset .cse19)) (.cse6 (+ .cse19 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse2 (+ .cse18 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ .cse18 c_~B~0.offset)) (.cse10 (+ c_~B~0.offset .cse17)) (.cse12 (+ c_~A~0.offset .cse17)) (.cse8 (< c_~i_AC~0 c_~Cn~0))) (and (or .cse0 (forall ((v_ArrVal_403 (Array Int Int)) (v_ArrVal_402 (Array Int Int)) (v_ArrVal_404 (Array Int Int)) (~A~0.base Int)) (let ((.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_402) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_403) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (< (select .cse1 .cse2) (select (select .cse3 c_~B~0.base) .cse4)) (<= (select (select .cse3 ~A~0.base) .cse5) (select .cse1 .cse6))))))) (or .cse0 (forall ((v_ArrVal_403 (Array Int Int)) (v_ArrVal_402 (Array Int Int)) (v_ArrVal_404 (Array Int Int))) (let ((.cse7 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_402) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_403) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (< (select (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) (select (select .cse7 c_~B~0.base) .cse4)))) .cse8) (forall ((v_ArrVal_403 (Array Int Int)) (v_ArrVal_402 (Array Int Int)) (v_ArrVal_404 (Array Int Int))) (let ((.cse14 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_402) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_403) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (let ((.cse13 (select .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse9 (select .cse14 c_~B~0.base))) (or (forall ((~A~0.base Int)) (let ((.cse11 (select .cse14 ~A~0.base))) (or (< (select .cse9 .cse10) (select .cse11 .cse12)) (<= (select .cse11 .cse5) (select .cse13 .cse6))))) (< (select .cse13 .cse2) (select .cse9 .cse4)))))) (or (forall ((v_ArrVal_403 (Array Int Int)) (v_ArrVal_402 (Array Int Int)) (v_ArrVal_404 (Array Int Int)) (~A~0.base Int)) (let ((.cse15 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_402) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_403) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (let ((.cse16 (select .cse15 c_~B~0.base))) (or (< (select (select .cse15 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) (select .cse16 .cse4)) (< (select .cse16 .cse10) (select (select .cse15 ~A~0.base) .cse12)))))) .cse8)))) is different from false [2023-01-27 19:44:25,829 INFO L321 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2023-01-27 19:44:25,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 70 [2023-01-27 19:44:25,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:44:25,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 12048 treesize of output 11180 [2023-01-27 19:44:26,113 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:44:26,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1382 treesize of output 1230 [2023-01-27 19:44:26,148 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:44:26,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1222 treesize of output 1150 [2023-01-27 19:44:26,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:44:26,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1142 treesize of output 830 [2023-01-27 19:44:38,362 INFO L321 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2023-01-27 19:44:38,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 199 treesize of output 105 [2023-01-27 19:44:38,519 INFO L321 Elim1Store]: treesize reduction 4, result has 97.2 percent of original size [2023-01-27 19:44:38,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 36101 treesize of output 33545 [2023-01-27 19:44:38,946 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:44:38,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2763 treesize of output 2511 [2023-01-27 19:44:39,043 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:44:39,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2443 treesize of output 2351 [2023-01-27 19:44:39,161 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:44:39,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2283 treesize of output 1711 Received shutdown request... [2023-01-27 19:56:55,181 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 19:56:55,183 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 19:56:55,185 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 19:56:55,189 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 19:56:55,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 19:56:55,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-27 19:56:55,384 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 56ms.. [2023-01-27 19:56:55,386 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 19:56:55,386 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 19:56:55,386 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 19:56:55,386 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:56:55,390 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 19:56:55,390 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 19:56:55,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 07:56:55 BasicIcfg [2023-01-27 19:56:55,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 19:56:55,392 INFO L158 Benchmark]: Toolchain (without parser) took 812439.97ms. Allocated memory was 335.5MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 278.5MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-01-27 19:56:55,392 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 335.5MB. Free memory is still 283.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:56:55,392 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.02ms. Allocated memory is still 335.5MB. Free memory was 278.3MB in the beginning and 266.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 19:56:55,392 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.86ms. Allocated memory is still 335.5MB. Free memory was 266.5MB in the beginning and 264.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:56:55,393 INFO L158 Benchmark]: Boogie Preprocessor took 28.53ms. Allocated memory is still 335.5MB. Free memory was 264.2MB in the beginning and 262.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:56:55,393 INFO L158 Benchmark]: RCFGBuilder took 652.55ms. Allocated memory was 335.5MB in the beginning and 490.7MB in the end (delta: 155.2MB). Free memory was 262.3MB in the beginning and 447.0MB in the end (delta: -184.7MB). Peak memory consumption was 21.1MB. Max. memory is 16.0GB. [2023-01-27 19:56:55,393 INFO L158 Benchmark]: TraceAbstraction took 811422.69ms. Allocated memory was 490.7MB in the beginning and 1.8GB in the end (delta: 1.3GB). Free memory was 446.0MB in the beginning and 1.7GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-01-27 19:56:55,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 335.5MB. Free memory is still 283.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 281.02ms. Allocated memory is still 335.5MB. Free memory was 278.3MB in the beginning and 266.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.86ms. Allocated memory is still 335.5MB. Free memory was 266.5MB in the beginning and 264.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.53ms. Allocated memory is still 335.5MB. Free memory was 264.2MB in the beginning and 262.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 652.55ms. Allocated memory was 335.5MB in the beginning and 490.7MB in the end (delta: 155.2MB). Free memory was 262.3MB in the beginning and 447.0MB in the end (delta: -184.7MB). Peak memory consumption was 21.1MB. Max. memory is 16.0GB. * TraceAbstraction took 811422.69ms. Allocated memory was 490.7MB in the beginning and 1.8GB in the end (delta: 1.3GB). Free memory was 446.0MB in the beginning and 1.7GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.4s, 254 PlacesBefore, 31 PlacesAfterwards, 274 TransitionsBefore, 29 TransitionsAfterwards, 2688 CoEnabledTransitionPairs, 8 FixpointIterations, 174 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 60 TrivialYvCompositions, 14 ConcurrentYvCompositions, 22 ChoiceCompositions, 315 TotalNumberOfCompositions, 3952 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3033, independent: 2940, independent conditional: 0, independent unconditional: 2940, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1591, independent: 1569, independent conditional: 0, independent unconditional: 1569, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3033, independent: 1371, independent conditional: 0, independent unconditional: 1371, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 1591, unknown conditional: 0, unknown unconditional: 1591] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 56ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 56ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 56ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 56ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 303 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 811.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 517 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 517 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1072 IncrementalHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 0 mSDtfsCounter, 1072 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=431occurred in iteration=9, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 41.6s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 319 ConstructedInterpolants, 0 QuantifiedInterpolants, 2793 SizeOfPredicates, 55 NumberOfNonLiveVariables, 1061 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 16 InterpolantComputations, 9 PerfectInterpolantSequences, 18/25 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown