./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 18:45:02,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 18:45:02,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 18:45:02,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 18:45:02,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 18:45:02,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 18:45:02,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 18:45:02,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 18:45:02,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 18:45:02,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 18:45:02,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 18:45:02,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 18:45:02,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 18:45:02,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 18:45:02,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 18:45:02,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 18:45:02,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 18:45:02,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 18:45:02,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 18:45:02,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 18:45:02,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 18:45:02,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 18:45:02,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 18:45:02,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 18:45:02,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 18:45:02,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 18:45:02,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 18:45:02,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 18:45:02,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 18:45:02,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 18:45:02,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 18:45:02,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 18:45:02,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 18:45:02,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 18:45:02,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 18:45:02,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 18:45:02,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 18:45:02,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 18:45:02,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 18:45:02,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 18:45:02,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 18:45:02,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 18:45:02,276 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 18:45:02,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 18:45:02,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 18:45:02,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 18:45:02,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 18:45:02,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 18:45:02,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 18:45:02,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 18:45:02,280 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 18:45:02,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 18:45:02,280 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 18:45:02,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 18:45:02,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 18:45:02,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 18:45:02,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 18:45:02,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 18:45:02,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 18:45:02,282 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 18:45:02,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 18:45:02,283 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 18:45:02,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 18:45:02,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 18:45:02,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 18:45:02,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 18:45:02,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:45:02,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 18:45:02,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 18:45:02,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 18:45:02,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 18:45:02,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 18:45:02,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 18:45:02,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 18:45:02,286 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 18:45:02,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 18:45:02,287 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 18:45:02,287 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 18:45:02,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 18:45:02,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 18:45:02,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 18:45:02,552 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 18:45:02,552 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 18:45:02,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-08-30 18:45:03,635 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 18:45:03,846 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 18:45:03,846 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-08-30 18:45:03,851 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec2a63c7/a0c7cb2f92d048af8fe13805f2f5a365/FLAGbf46a07fb [2023-08-30 18:45:03,862 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec2a63c7/a0c7cb2f92d048af8fe13805f2f5a365 [2023-08-30 18:45:03,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 18:45:03,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 18:45:03,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 18:45:03,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 18:45:03,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 18:45:03,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:45:03" (1/1) ... [2023-08-30 18:45:03,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48bae38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:03, skipping insertion in model container [2023-08-30 18:45:03,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:45:03" (1/1) ... [2023-08-30 18:45:03,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 18:45:03,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 18:45:04,035 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/chl-array-int-subst.wvr.c[2781,2794] [2023-08-30 18:45:04,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:45:04,051 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 18:45:04,071 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/chl-array-int-subst.wvr.c[2781,2794] [2023-08-30 18:45:04,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:45:04,087 INFO L208 MainTranslator]: Completed translation [2023-08-30 18:45:04,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04 WrapperNode [2023-08-30 18:45:04,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 18:45:04,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 18:45:04,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 18:45:04,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 18:45:04,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04" (1/1) ... [2023-08-30 18:45:04,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04" (1/1) ... [2023-08-30 18:45:04,138 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 287 [2023-08-30 18:45:04,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 18:45:04,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 18:45:04,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 18:45:04,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 18:45:04,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04" (1/1) ... [2023-08-30 18:45:04,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04" (1/1) ... [2023-08-30 18:45:04,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04" (1/1) ... [2023-08-30 18:45:04,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04" (1/1) ... [2023-08-30 18:45:04,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04" (1/1) ... [2023-08-30 18:45:04,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04" (1/1) ... [2023-08-30 18:45:04,191 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04" (1/1) ... [2023-08-30 18:45:04,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04" (1/1) ... [2023-08-30 18:45:04,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 18:45:04,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 18:45:04,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 18:45:04,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 18:45:04,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04" (1/1) ... [2023-08-30 18:45:04,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:45:04,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:45:04,238 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) [2023-08-30 18:45:04,255 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 [2023-08-30 18:45:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 18:45:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 18:45:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 18:45:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 18:45:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 18:45:04,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 18:45:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 18:45:04,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 18:45:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 18:45:04,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 18:45:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 18:45:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 18:45:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 18:45:04,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 18:45:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 18:45:04,282 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 18:45:04,368 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 18:45:04,369 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 18:45:04,808 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 18:45:04,827 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 18:45:04,828 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 18:45:04,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:45:04 BoogieIcfgContainer [2023-08-30 18:45:04,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 18:45:04,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 18:45:04,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 18:45:04,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 18:45:04,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:45:03" (1/3) ... [2023-08-30 18:45:04,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75300d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:45:04, skipping insertion in model container [2023-08-30 18:45:04,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:45:04" (2/3) ... [2023-08-30 18:45:04,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75300d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:45:04, skipping insertion in model container [2023-08-30 18:45:04,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:45:04" (3/3) ... [2023-08-30 18:45:04,840 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-08-30 18:45:04,847 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 18:45:04,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 18:45:04,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 18:45:04,855 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 18:45:04,940 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 18:45:04,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 324 transitions, 672 flow [2023-08-30 18:45:05,089 INFO L130 PetriNetUnfolder]: 29/321 cut-off events. [2023-08-30 18:45:05,090 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:45:05,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 321 events. 29/321 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 505 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2023-08-30 18:45:05,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 324 transitions, 672 flow [2023-08-30 18:45:05,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 311 transitions, 640 flow [2023-08-30 18:45:05,105 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 18:45:05,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 311 transitions, 640 flow [2023-08-30 18:45:05,115 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 311 transitions, 640 flow [2023-08-30 18:45:05,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 311 transitions, 640 flow [2023-08-30 18:45:05,178 INFO L130 PetriNetUnfolder]: 29/311 cut-off events. [2023-08-30 18:45:05,178 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:45:05,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 311 events. 29/311 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 504 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2023-08-30 18:45:05,191 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2023-08-30 18:45:13,523 INFO L134 LiptonReduction]: Checked pairs total: 16261 [2023-08-30 18:45:13,523 INFO L136 LiptonReduction]: Total number of compositions: 353 [2023-08-30 18:45:13,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 18:45:13,542 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=true, 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;@5c939104, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 18:45:13,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 18:45:13,549 INFO L130 PetriNetUnfolder]: 8/35 cut-off events. [2023-08-30 18:45:13,549 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:45:13,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:13,550 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] [2023-08-30 18:45:13,551 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)] === [2023-08-30 18:45:13,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:13,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1811737217, now seen corresponding path program 1 times [2023-08-30 18:45:13,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:13,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476528779] [2023-08-30 18:45:13,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:13,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:14,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:14,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476528779] [2023-08-30 18:45:14,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476528779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:45:14,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:45:14,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:45:14,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858180674] [2023-08-30 18:45:14,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:14,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:45:14,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:14,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:45:14,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 18:45:15,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 677 [2023-08-30 18:45:15,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 90 flow. Second operand has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 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) [2023-08-30 18:45:15,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:15,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 677 [2023-08-30 18:45:15,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:16,117 INFO L130 PetriNetUnfolder]: 1997/2838 cut-off events. [2023-08-30 18:45:16,117 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2023-08-30 18:45:16,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5910 conditions, 2838 events. 1997/2838 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11887 event pairs, 166 based on Foata normal form. 1/2235 useless extension candidates. Maximal degree in co-relation 2936. Up to 1149 conditions per place. [2023-08-30 18:45:16,129 INFO L137 encePairwiseOnDemand]: 665/677 looper letters, 118 selfloop transitions, 14 changer transitions 4/136 dead transitions. [2023-08-30 18:45:16,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 136 transitions, 607 flow [2023-08-30 18:45:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 18:45:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 18:45:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2849 transitions. [2023-08-30 18:45:16,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42082717872968983 [2023-08-30 18:45:16,149 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2849 transitions. [2023-08-30 18:45:16,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2849 transitions. [2023-08-30 18:45:16,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:16,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2849 transitions. [2023-08-30 18:45:16,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 284.9) internal successors, (2849), 10 states have internal predecessors, (2849), 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) [2023-08-30 18:45:16,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 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) [2023-08-30 18:45:16,178 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 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) [2023-08-30 18:45:16,180 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 90 flow. Second operand 10 states and 2849 transitions. [2023-08-30 18:45:16,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 136 transitions, 607 flow [2023-08-30 18:45:16,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 136 transitions, 565 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 18:45:16,187 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 171 flow [2023-08-30 18:45:16,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=171, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2023-08-30 18:45:16,192 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2023-08-30 18:45:16,192 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 171 flow [2023-08-30 18:45:16,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 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) [2023-08-30 18:45:16,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:16,194 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] [2023-08-30 18:45:16,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 18:45:16,195 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)] === [2023-08-30 18:45:16,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash 606335977, now seen corresponding path program 2 times [2023-08-30 18:45:16,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:16,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473359411] [2023-08-30 18:45:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:16,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473359411] [2023-08-30 18:45:16,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473359411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:45:16,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:45:16,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:45:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951922300] [2023-08-30 18:45:16,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:16,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:45:16,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:16,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:45:16,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 18:45:17,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 677 [2023-08-30 18:45:17,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 171 flow. Second operand has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 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) [2023-08-30 18:45:17,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:17,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 677 [2023-08-30 18:45:17,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:18,075 INFO L130 PetriNetUnfolder]: 2067/2969 cut-off events. [2023-08-30 18:45:18,075 INFO L131 PetriNetUnfolder]: For 672/672 co-relation queries the response was YES. [2023-08-30 18:45:18,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6719 conditions, 2969 events. 2067/2969 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12863 event pairs, 168 based on Foata normal form. 1/2438 useless extension candidates. Maximal degree in co-relation 6694. Up to 1149 conditions per place. [2023-08-30 18:45:18,087 INFO L137 encePairwiseOnDemand]: 666/677 looper letters, 112 selfloop transitions, 16 changer transitions 8/136 dead transitions. [2023-08-30 18:45:18,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 136 transitions, 643 flow [2023-08-30 18:45:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 18:45:18,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 18:45:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2846 transitions. [2023-08-30 18:45:18,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.420384047267356 [2023-08-30 18:45:18,094 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2846 transitions. [2023-08-30 18:45:18,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2846 transitions. [2023-08-30 18:45:18,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:18,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2846 transitions. [2023-08-30 18:45:18,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 284.6) internal successors, (2846), 10 states have internal predecessors, (2846), 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) [2023-08-30 18:45:18,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 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) [2023-08-30 18:45:18,114 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 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) [2023-08-30 18:45:18,114 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 171 flow. Second operand 10 states and 2846 transitions. [2023-08-30 18:45:18,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 136 transitions, 643 flow [2023-08-30 18:45:18,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 136 transitions, 637 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-30 18:45:18,123 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 223 flow [2023-08-30 18:45:18,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=223, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-30 18:45:18,124 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-08-30 18:45:18,124 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 223 flow [2023-08-30 18:45:18,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 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) [2023-08-30 18:45:18,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:18,127 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] [2023-08-30 18:45:18,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 18:45:18,127 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)] === [2023-08-30 18:45:18,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash 235386122, now seen corresponding path program 1 times [2023-08-30 18:45:18,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:18,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093270467] [2023-08-30 18:45:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:18,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:18,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:18,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093270467] [2023-08-30 18:45:18,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093270467] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:18,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343743329] [2023-08-30 18:45:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:18,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:18,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:45:18,609 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) [2023-08-30 18:45:18,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 18:45:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:18,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 18:45:18,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:45:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:19,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:45:19,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:45:19,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 165 [2023-08-30 18:45:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:20,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343743329] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:20,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 18:45:20,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 19 [2023-08-30 18:45:20,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295410859] [2023-08-30 18:45:20,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:20,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:45:20,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:45:20,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-08-30 18:45:20,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 677 [2023-08-30 18:45:20,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 223 flow. Second operand has 9 states, 9 states have (on average 265.55555555555554) internal successors, (2390), 9 states have internal predecessors, (2390), 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) [2023-08-30 18:45:20,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:20,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 677 [2023-08-30 18:45:20,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:21,451 INFO L130 PetriNetUnfolder]: 3352/4807 cut-off events. [2023-08-30 18:45:21,452 INFO L131 PetriNetUnfolder]: For 2315/2315 co-relation queries the response was YES. [2023-08-30 18:45:21,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11509 conditions, 4807 events. 3352/4807 cut-off events. For 2315/2315 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22752 event pairs, 397 based on Foata normal form. 73/4028 useless extension candidates. Maximal degree in co-relation 9978. Up to 1658 conditions per place. [2023-08-30 18:45:21,475 INFO L137 encePairwiseOnDemand]: 665/677 looper letters, 163 selfloop transitions, 17 changer transitions 5/185 dead transitions. [2023-08-30 18:45:21,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 185 transitions, 930 flow [2023-08-30 18:45:21,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 18:45:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 18:45:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3603 transitions. [2023-08-30 18:45:21,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093852971253267 [2023-08-30 18:45:21,485 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3603 transitions. [2023-08-30 18:45:21,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3603 transitions. [2023-08-30 18:45:21,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:21,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3603 transitions. [2023-08-30 18:45:21,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 277.15384615384613) internal successors, (3603), 13 states have internal predecessors, (3603), 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) [2023-08-30 18:45:21,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 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) [2023-08-30 18:45:21,508 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 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) [2023-08-30 18:45:21,508 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 223 flow. Second operand 13 states and 3603 transitions. [2023-08-30 18:45:21,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 185 transitions, 930 flow [2023-08-30 18:45:21,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 185 transitions, 909 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 18:45:21,529 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 297 flow [2023-08-30 18:45:21,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=297, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2023-08-30 18:45:21,530 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2023-08-30 18:45:21,531 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 297 flow [2023-08-30 18:45:21,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 265.55555555555554) internal successors, (2390), 9 states have internal predecessors, (2390), 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) [2023-08-30 18:45:21,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:21,532 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] [2023-08-30 18:45:21,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 18:45:21,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:21,739 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)] === [2023-08-30 18:45:21,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:21,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1647439045, now seen corresponding path program 1 times [2023-08-30 18:45:21,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:21,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992658783] [2023-08-30 18:45:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:21,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:21,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:21,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992658783] [2023-08-30 18:45:21,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992658783] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:21,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270050875] [2023-08-30 18:45:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:21,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:21,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:45:21,929 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) [2023-08-30 18:45:21,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 18:45:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:22,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 18:45:22,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:45:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:22,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:45:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:22,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270050875] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:22,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 18:45:22,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-08-30 18:45:22,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012646739] [2023-08-30 18:45:22,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:22,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:45:22,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:22,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:45:22,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-30 18:45:22,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 677 [2023-08-30 18:45:22,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 275.2857142857143) internal successors, (1927), 7 states have internal predecessors, (1927), 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) [2023-08-30 18:45:22,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:22,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 677 [2023-08-30 18:45:22,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:23,327 INFO L130 PetriNetUnfolder]: 5270/7512 cut-off events. [2023-08-30 18:45:23,328 INFO L131 PetriNetUnfolder]: For 6560/6560 co-relation queries the response was YES. [2023-08-30 18:45:23,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19545 conditions, 7512 events. 5270/7512 cut-off events. For 6560/6560 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 37182 event pairs, 3093 based on Foata normal form. 1/6217 useless extension candidates. Maximal degree in co-relation 18023. Up to 4796 conditions per place. [2023-08-30 18:45:23,374 INFO L137 encePairwiseOnDemand]: 668/677 looper letters, 134 selfloop transitions, 11 changer transitions 6/151 dead transitions. [2023-08-30 18:45:23,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 151 transitions, 924 flow [2023-08-30 18:45:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:45:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:45:23,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2029 transitions. [2023-08-30 18:45:23,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281493986073011 [2023-08-30 18:45:23,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2029 transitions. [2023-08-30 18:45:23,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2029 transitions. [2023-08-30 18:45:23,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:23,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2029 transitions. [2023-08-30 18:45:23,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.85714285714283) internal successors, (2029), 7 states have internal predecessors, (2029), 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) [2023-08-30 18:45:23,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 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) [2023-08-30 18:45:23,391 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 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) [2023-08-30 18:45:23,391 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 297 flow. Second operand 7 states and 2029 transitions. [2023-08-30 18:45:23,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 151 transitions, 924 flow [2023-08-30 18:45:23,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 151 transitions, 873 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-30 18:45:23,432 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 330 flow [2023-08-30 18:45:23,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=330, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2023-08-30 18:45:23,433 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2023-08-30 18:45:23,433 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 330 flow [2023-08-30 18:45:23,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 275.2857142857143) internal successors, (1927), 7 states have internal predecessors, (1927), 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) [2023-08-30 18:45:23,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:23,434 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] [2023-08-30 18:45:23,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 18:45:23,639 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,SelfDestructingSolverStorable3 [2023-08-30 18:45:23,640 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)] === [2023-08-30 18:45:23,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:23,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2003328084, now seen corresponding path program 1 times [2023-08-30 18:45:23,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:23,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620444363] [2023-08-30 18:45:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:23,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:23,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:23,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620444363] [2023-08-30 18:45:23,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620444363] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:23,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203260508] [2023-08-30 18:45:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:23,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:23,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:45:23,833 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) [2023-08-30 18:45:23,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 18:45:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:23,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 18:45:23,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:45:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:24,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:45:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:24,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203260508] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:24,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 18:45:24,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2023-08-30 18:45:24,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831420725] [2023-08-30 18:45:24,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:24,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:45:24,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:24,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:45:24,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-30 18:45:24,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 677 [2023-08-30 18:45:24,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 275.8333333333333) internal successors, (1655), 6 states have internal predecessors, (1655), 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) [2023-08-30 18:45:24,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:24,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 677 [2023-08-30 18:45:24,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:25,218 INFO L130 PetriNetUnfolder]: 5428/7763 cut-off events. [2023-08-30 18:45:25,219 INFO L131 PetriNetUnfolder]: For 6141/6141 co-relation queries the response was YES. [2023-08-30 18:45:25,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20447 conditions, 7763 events. 5428/7763 cut-off events. For 6141/6141 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 38922 event pairs, 3239 based on Foata normal form. 1/6442 useless extension candidates. Maximal degree in co-relation 18869. Up to 4536 conditions per place. [2023-08-30 18:45:25,258 INFO L137 encePairwiseOnDemand]: 667/677 looper letters, 127 selfloop transitions, 11 changer transitions 7/145 dead transitions. [2023-08-30 18:45:25,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 145 transitions, 881 flow [2023-08-30 18:45:25,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:45:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:45:25,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2028 transitions. [2023-08-30 18:45:25,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4279383836252374 [2023-08-30 18:45:25,263 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2028 transitions. [2023-08-30 18:45:25,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2028 transitions. [2023-08-30 18:45:25,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:25,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2028 transitions. [2023-08-30 18:45:25,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.7142857142857) internal successors, (2028), 7 states have internal predecessors, (2028), 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) [2023-08-30 18:45:25,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 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) [2023-08-30 18:45:25,276 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 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) [2023-08-30 18:45:25,276 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 330 flow. Second operand 7 states and 2028 transitions. [2023-08-30 18:45:25,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 145 transitions, 881 flow [2023-08-30 18:45:25,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 145 transitions, 869 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 18:45:25,312 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 359 flow [2023-08-30 18:45:25,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2023-08-30 18:45:25,313 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2023-08-30 18:45:25,313 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 359 flow [2023-08-30 18:45:25,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.8333333333333) internal successors, (1655), 6 states have internal predecessors, (1655), 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) [2023-08-30 18:45:25,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:25,314 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] [2023-08-30 18:45:25,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 18:45:25,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:25,524 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)] === [2023-08-30 18:45:25,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash -105723106, now seen corresponding path program 2 times [2023-08-30 18:45:25,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:25,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014730291] [2023-08-30 18:45:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:25,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:25,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:25,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:25,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014730291] [2023-08-30 18:45:25,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014730291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:25,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635155469] [2023-08-30 18:45:25,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 18:45:25,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:25,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:45:25,984 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) [2023-08-30 18:45:25,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 18:45:26,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 18:45:26,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:45:26,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 18:45:26,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:45:26,440 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:45:26,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 107 [2023-08-30 18:45:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:45:26,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:45:26,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635155469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:45:26,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:45:26,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-08-30 18:45:26,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507883093] [2023-08-30 18:45:26,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:26,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:45:26,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:26,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:45:26,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-08-30 18:45:26,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 677 [2023-08-30 18:45:26,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 359 flow. Second operand has 9 states, 9 states have (on average 273.55555555555554) internal successors, (2462), 9 states have internal predecessors, (2462), 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) [2023-08-30 18:45:26,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:26,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 677 [2023-08-30 18:45:26,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:28,291 INFO L130 PetriNetUnfolder]: 7122/10386 cut-off events. [2023-08-30 18:45:28,292 INFO L131 PetriNetUnfolder]: For 9452/9452 co-relation queries the response was YES. [2023-08-30 18:45:28,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27410 conditions, 10386 events. 7122/10386 cut-off events. For 9452/9452 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 57636 event pairs, 1750 based on Foata normal form. 89/8681 useless extension candidates. Maximal degree in co-relation 24358. Up to 4154 conditions per place. [2023-08-30 18:45:28,351 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 229 selfloop transitions, 35 changer transitions 11/275 dead transitions. [2023-08-30 18:45:28,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 275 transitions, 1632 flow [2023-08-30 18:45:28,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 18:45:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 18:45:28,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4314 transitions. [2023-08-30 18:45:28,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42481536189069424 [2023-08-30 18:45:28,363 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4314 transitions. [2023-08-30 18:45:28,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4314 transitions. [2023-08-30 18:45:28,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:28,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4314 transitions. [2023-08-30 18:45:28,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 287.6) internal successors, (4314), 15 states have internal predecessors, (4314), 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) [2023-08-30 18:45:28,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 677.0) internal successors, (10832), 16 states have internal predecessors, (10832), 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) [2023-08-30 18:45:28,386 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 677.0) internal successors, (10832), 16 states have internal predecessors, (10832), 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) [2023-08-30 18:45:28,386 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 359 flow. Second operand 15 states and 4314 transitions. [2023-08-30 18:45:28,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 275 transitions, 1632 flow [2023-08-30 18:45:28,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 275 transitions, 1616 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 18:45:28,431 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 692 flow [2023-08-30 18:45:28,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=692, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2023-08-30 18:45:28,434 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 62 predicate places. [2023-08-30 18:45:28,434 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 692 flow [2023-08-30 18:45:28,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 273.55555555555554) internal successors, (2462), 9 states have internal predecessors, (2462), 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) [2023-08-30 18:45:28,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:28,435 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] [2023-08-30 18:45:28,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 18:45:28,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:28,658 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)] === [2023-08-30 18:45:28,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:28,659 INFO L85 PathProgramCache]: Analyzing trace with hash -964485474, now seen corresponding path program 3 times [2023-08-30 18:45:28,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:28,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024145469] [2023-08-30 18:45:28,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:28,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:29,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:29,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024145469] [2023-08-30 18:45:29,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024145469] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:29,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589504706] [2023-08-30 18:45:29,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 18:45:29,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:29,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:45:29,085 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) [2023-08-30 18:45:29,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 18:45:29,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 18:45:29,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:45:29,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 18:45:29,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:45:29,457 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:45:29,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 107 [2023-08-30 18:45:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:45:29,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:45:29,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589504706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:45:29,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:45:29,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-08-30 18:45:29,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758958023] [2023-08-30 18:45:29,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:29,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:45:29,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:29,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:45:29,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-08-30 18:45:29,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 677 [2023-08-30 18:45:29,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 692 flow. Second operand has 9 states, 9 states have (on average 271.55555555555554) internal successors, (2444), 9 states have internal predecessors, (2444), 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) [2023-08-30 18:45:29,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:29,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 677 [2023-08-30 18:45:29,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:31,417 INFO L130 PetriNetUnfolder]: 7540/11054 cut-off events. [2023-08-30 18:45:31,417 INFO L131 PetriNetUnfolder]: For 19752/19752 co-relation queries the response was YES. [2023-08-30 18:45:31,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31460 conditions, 11054 events. 7540/11054 cut-off events. For 19752/19752 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 62045 event pairs, 1762 based on Foata normal form. 197/9281 useless extension candidates. Maximal degree in co-relation 29815. Up to 4154 conditions per place. [2023-08-30 18:45:31,477 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 212 selfloop transitions, 43 changer transitions 15/270 dead transitions. [2023-08-30 18:45:31,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 270 transitions, 1755 flow [2023-08-30 18:45:31,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 18:45:31,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 18:45:31,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4280 transitions. [2023-08-30 18:45:31,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42146725750861647 [2023-08-30 18:45:31,487 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4280 transitions. [2023-08-30 18:45:31,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4280 transitions. [2023-08-30 18:45:31,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:31,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4280 transitions. [2023-08-30 18:45:31,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 285.3333333333333) internal successors, (4280), 15 states have internal predecessors, (4280), 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) [2023-08-30 18:45:31,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 677.0) internal successors, (10832), 16 states have internal predecessors, (10832), 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) [2023-08-30 18:45:31,510 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 677.0) internal successors, (10832), 16 states have internal predecessors, (10832), 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) [2023-08-30 18:45:31,510 INFO L175 Difference]: Start difference. First operand has 100 places, 95 transitions, 692 flow. Second operand 15 states and 4280 transitions. [2023-08-30 18:45:31,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 270 transitions, 1755 flow [2023-08-30 18:45:31,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 270 transitions, 1705 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-30 18:45:31,616 INFO L231 Difference]: Finished difference. Result has 118 places, 103 transitions, 869 flow [2023-08-30 18:45:31,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=869, PETRI_PLACES=118, PETRI_TRANSITIONS=103} [2023-08-30 18:45:31,617 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 80 predicate places. [2023-08-30 18:45:31,618 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 103 transitions, 869 flow [2023-08-30 18:45:31,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 271.55555555555554) internal successors, (2444), 9 states have internal predecessors, (2444), 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) [2023-08-30 18:45:31,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:31,619 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] [2023-08-30 18:45:31,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 18:45:31,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:31,825 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)] === [2023-08-30 18:45:31,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:31,826 INFO L85 PathProgramCache]: Analyzing trace with hash 927259102, now seen corresponding path program 4 times [2023-08-30 18:45:31,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:31,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118105320] [2023-08-30 18:45:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:31,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:32,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:32,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118105320] [2023-08-30 18:45:32,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118105320] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:32,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095362255] [2023-08-30 18:45:32,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 18:45:32,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:32,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:45:32,487 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:45:32,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 18:45:32,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 18:45:32,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:45:32,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 18:45:32,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:45:33,003 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:45:33,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 134 [2023-08-30 18:45:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:33,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:45:34,082 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:45:34,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 165 [2023-08-30 18:45:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:34,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095362255] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:34,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 18:45:34,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 22 [2023-08-30 18:45:34,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948496667] [2023-08-30 18:45:34,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:34,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:45:34,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:34,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:45:34,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-08-30 18:45:34,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 677 [2023-08-30 18:45:34,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 103 transitions, 869 flow. Second operand has 9 states, 9 states have (on average 258.55555555555554) internal successors, (2327), 9 states have internal predecessors, (2327), 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) [2023-08-30 18:45:34,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:34,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 677 [2023-08-30 18:45:34,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:37,287 INFO L130 PetriNetUnfolder]: 18154/26002 cut-off events. [2023-08-30 18:45:37,287 INFO L131 PetriNetUnfolder]: For 80076/80076 co-relation queries the response was YES. [2023-08-30 18:45:37,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81060 conditions, 26002 events. 18154/26002 cut-off events. For 80076/80076 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 160797 event pairs, 1836 based on Foata normal form. 2/21398 useless extension candidates. Maximal degree in co-relation 78458. Up to 8287 conditions per place. [2023-08-30 18:45:37,577 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 221 selfloop transitions, 120 changer transitions 1/342 dead transitions. [2023-08-30 18:45:37,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 342 transitions, 2871 flow [2023-08-30 18:45:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 18:45:37,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 18:45:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3792 transitions. [2023-08-30 18:45:37,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40008440599282546 [2023-08-30 18:45:37,590 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3792 transitions. [2023-08-30 18:45:37,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3792 transitions. [2023-08-30 18:45:37,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:37,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3792 transitions. [2023-08-30 18:45:37,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 270.85714285714283) internal successors, (3792), 14 states have internal predecessors, (3792), 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) [2023-08-30 18:45:37,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 677.0) internal successors, (10155), 15 states have internal predecessors, (10155), 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) [2023-08-30 18:45:37,613 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 677.0) internal successors, (10155), 15 states have internal predecessors, (10155), 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) [2023-08-30 18:45:37,613 INFO L175 Difference]: Start difference. First operand has 118 places, 103 transitions, 869 flow. Second operand 14 states and 3792 transitions. [2023-08-30 18:45:37,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 342 transitions, 2871 flow [2023-08-30 18:45:38,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 342 transitions, 2738 flow, removed 35 selfloop flow, removed 8 redundant places. [2023-08-30 18:45:38,328 INFO L231 Difference]: Finished difference. Result has 131 places, 211 transitions, 2108 flow [2023-08-30 18:45:38,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2108, PETRI_PLACES=131, PETRI_TRANSITIONS=211} [2023-08-30 18:45:38,329 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 93 predicate places. [2023-08-30 18:45:38,329 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 211 transitions, 2108 flow [2023-08-30 18:45:38,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 258.55555555555554) internal successors, (2327), 9 states have internal predecessors, (2327), 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) [2023-08-30 18:45:38,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:38,330 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] [2023-08-30 18:45:38,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 18:45:38,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:38,533 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)] === [2023-08-30 18:45:38,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash 158436876, now seen corresponding path program 5 times [2023-08-30 18:45:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:38,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030395519] [2023-08-30 18:45:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:38,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:39,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:39,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030395519] [2023-08-30 18:45:39,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030395519] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:39,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222375507] [2023-08-30 18:45:39,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 18:45:39,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:39,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:45:39,004 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:45:39,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 18:45:39,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 18:45:39,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:45:39,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 18:45:39,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:45:39,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:45:39,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 160 treesize of output 141 [2023-08-30 18:45:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:39,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:45:40,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:45:40,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 165 [2023-08-30 18:45:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:40,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222375507] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:40,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 18:45:40,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 19 [2023-08-30 18:45:40,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023916489] [2023-08-30 18:45:40,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:40,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:45:40,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:40,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:45:40,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-08-30 18:45:40,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 677 [2023-08-30 18:45:40,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 211 transitions, 2108 flow. Second operand has 9 states, 9 states have (on average 265.55555555555554) internal successors, (2390), 9 states have internal predecessors, (2390), 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) [2023-08-30 18:45:40,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:40,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 677 [2023-08-30 18:45:40,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:43,656 INFO L130 PetriNetUnfolder]: 18154/25999 cut-off events. [2023-08-30 18:45:43,657 INFO L131 PetriNetUnfolder]: For 97010/97010 co-relation queries the response was YES. [2023-08-30 18:45:43,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98170 conditions, 25999 events. 18154/25999 cut-off events. For 97010/97010 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 160461 event pairs, 3176 based on Foata normal form. 3/23918 useless extension candidates. Maximal degree in co-relation 96574. Up to 14851 conditions per place. [2023-08-30 18:45:43,803 INFO L137 encePairwiseOnDemand]: 666/677 looper letters, 298 selfloop transitions, 42 changer transitions 10/350 dead transitions. [2023-08-30 18:45:43,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 350 transitions, 3372 flow [2023-08-30 18:45:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 18:45:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 18:45:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3600 transitions. [2023-08-30 18:45:43,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090444267696853 [2023-08-30 18:45:43,810 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3600 transitions. [2023-08-30 18:45:43,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3600 transitions. [2023-08-30 18:45:43,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:43,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3600 transitions. [2023-08-30 18:45:43,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 276.9230769230769) internal successors, (3600), 13 states have internal predecessors, (3600), 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) [2023-08-30 18:45:43,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 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) [2023-08-30 18:45:43,825 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 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) [2023-08-30 18:45:43,825 INFO L175 Difference]: Start difference. First operand has 131 places, 211 transitions, 2108 flow. Second operand 13 states and 3600 transitions. [2023-08-30 18:45:43,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 350 transitions, 3372 flow [2023-08-30 18:45:44,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 350 transitions, 3315 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-30 18:45:44,794 INFO L231 Difference]: Finished difference. Result has 142 places, 210 transitions, 2136 flow [2023-08-30 18:45:44,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2136, PETRI_PLACES=142, PETRI_TRANSITIONS=210} [2023-08-30 18:45:44,794 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2023-08-30 18:45:44,794 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 210 transitions, 2136 flow [2023-08-30 18:45:44,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 265.55555555555554) internal successors, (2390), 9 states have internal predecessors, (2390), 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) [2023-08-30 18:45:44,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:44,795 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, 1] [2023-08-30 18:45:44,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 18:45:44,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:44,997 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)] === [2023-08-30 18:45:44,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:44,997 INFO L85 PathProgramCache]: Analyzing trace with hash -671402008, now seen corresponding path program 1 times [2023-08-30 18:45:44,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:44,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141423779] [2023-08-30 18:45:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:44,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:45:45,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:45,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141423779] [2023-08-30 18:45:45,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141423779] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:45,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682116179] [2023-08-30 18:45:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:45,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:45,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:45:45,109 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:45:45,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 18:45:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:45,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 18:45:45,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:45:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:45,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:45:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:45,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682116179] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:45,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 18:45:45,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 6] total 12 [2023-08-30 18:45:45,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047626032] [2023-08-30 18:45:45,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:45,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:45:45,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:45,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:45:45,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-30 18:45:45,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 677 [2023-08-30 18:45:45,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 210 transitions, 2136 flow. Second operand has 7 states, 7 states have (on average 274.42857142857144) internal successors, (1921), 7 states have internal predecessors, (1921), 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) [2023-08-30 18:45:45,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:45,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 677 [2023-08-30 18:45:45,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:49,223 INFO L130 PetriNetUnfolder]: 19128/27437 cut-off events. [2023-08-30 18:45:49,223 INFO L131 PetriNetUnfolder]: For 109142/109142 co-relation queries the response was YES. [2023-08-30 18:45:49,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102922 conditions, 27437 events. 19128/27437 cut-off events. For 109142/109142 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 173177 event pairs, 4872 based on Foata normal form. 0/25353 useless extension candidates. Maximal degree in co-relation 101271. Up to 8897 conditions per place. [2023-08-30 18:45:49,405 INFO L137 encePairwiseOnDemand]: 667/677 looper letters, 486 selfloop transitions, 24 changer transitions 6/516 dead transitions. [2023-08-30 18:45:49,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 516 transitions, 5474 flow [2023-08-30 18:45:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 18:45:49,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 18:45:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2878 transitions. [2023-08-30 18:45:49,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42511078286558346 [2023-08-30 18:45:49,410 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2878 transitions. [2023-08-30 18:45:49,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2878 transitions. [2023-08-30 18:45:49,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:49,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2878 transitions. [2023-08-30 18:45:49,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 287.8) internal successors, (2878), 10 states have internal predecessors, (2878), 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) [2023-08-30 18:45:49,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 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) [2023-08-30 18:45:49,421 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 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) [2023-08-30 18:45:49,422 INFO L175 Difference]: Start difference. First operand has 142 places, 210 transitions, 2136 flow. Second operand 10 states and 2878 transitions. [2023-08-30 18:45:49,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 516 transitions, 5474 flow [2023-08-30 18:45:49,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 516 transitions, 5344 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-30 18:45:49,895 INFO L231 Difference]: Finished difference. Result has 144 places, 216 transitions, 2157 flow [2023-08-30 18:45:49,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=2068, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2157, PETRI_PLACES=144, PETRI_TRANSITIONS=216} [2023-08-30 18:45:49,896 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 106 predicate places. [2023-08-30 18:45:49,896 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 216 transitions, 2157 flow [2023-08-30 18:45:49,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 274.42857142857144) internal successors, (1921), 7 states have internal predecessors, (1921), 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) [2023-08-30 18:45:49,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:49,897 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, 1, 1] [2023-08-30 18:45:49,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 18:45:50,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 18:45:50,097 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:45:50,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:50,098 INFO L85 PathProgramCache]: Analyzing trace with hash -143631792, now seen corresponding path program 1 times [2023-08-30 18:45:50,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:50,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536050828] [2023-08-30 18:45:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:50,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:50,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:50,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:50,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536050828] [2023-08-30 18:45:50,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536050828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:45:50,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:45:50,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:45:50,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118824792] [2023-08-30 18:45:50,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:50,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:45:50,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:50,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:45:50,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:45:50,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 677 [2023-08-30 18:45:50,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 216 transitions, 2157 flow. Second operand has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 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) [2023-08-30 18:45:50,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:50,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 677 [2023-08-30 18:45:50,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:52,350 INFO L130 PetriNetUnfolder]: 10902/15866 cut-off events. [2023-08-30 18:45:52,351 INFO L131 PetriNetUnfolder]: For 66763/66763 co-relation queries the response was YES. [2023-08-30 18:45:52,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62778 conditions, 15866 events. 10902/15866 cut-off events. For 66763/66763 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 92217 event pairs, 4879 based on Foata normal form. 572/16438 useless extension candidates. Maximal degree in co-relation 62201. Up to 11427 conditions per place. [2023-08-30 18:45:52,429 INFO L137 encePairwiseOnDemand]: 669/677 looper letters, 196 selfloop transitions, 13 changer transitions 54/263 dead transitions. [2023-08-30 18:45:52,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 263 transitions, 2636 flow [2023-08-30 18:45:52,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:45:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:45:52,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2086 transitions. [2023-08-30 18:45:52,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401772525849335 [2023-08-30 18:45:52,432 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2086 transitions. [2023-08-30 18:45:52,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2086 transitions. [2023-08-30 18:45:52,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:52,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2086 transitions. [2023-08-30 18:45:52,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 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) [2023-08-30 18:45:52,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 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) [2023-08-30 18:45:52,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 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) [2023-08-30 18:45:52,437 INFO L175 Difference]: Start difference. First operand has 144 places, 216 transitions, 2157 flow. Second operand 7 states and 2086 transitions. [2023-08-30 18:45:52,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 263 transitions, 2636 flow [2023-08-30 18:45:52,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 263 transitions, 2398 flow, removed 71 selfloop flow, removed 11 redundant places. [2023-08-30 18:45:52,697 INFO L231 Difference]: Finished difference. Result has 143 places, 131 transitions, 1030 flow [2023-08-30 18:45:52,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1030, PETRI_PLACES=143, PETRI_TRANSITIONS=131} [2023-08-30 18:45:52,698 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 105 predicate places. [2023-08-30 18:45:52,698 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 131 transitions, 1030 flow [2023-08-30 18:45:52,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 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) [2023-08-30 18:45:52,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:52,698 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, 1, 1, 1] [2023-08-30 18:45:52,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 18:45:52,699 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:45:52,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1576177570, now seen corresponding path program 1 times [2023-08-30 18:45:52,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:52,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356014937] [2023-08-30 18:45:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:52,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:45:52,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:52,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356014937] [2023-08-30 18:45:52,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356014937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:45:52,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:45:52,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 18:45:52,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922128099] [2023-08-30 18:45:52,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:52,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:45:52,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:52,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:45:52,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:45:52,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 677 [2023-08-30 18:45:52,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 1030 flow. Second operand has 5 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 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) [2023-08-30 18:45:52,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:52,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 677 [2023-08-30 18:45:52,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:54,360 INFO L130 PetriNetUnfolder]: 6934/9959 cut-off events. [2023-08-30 18:45:54,360 INFO L131 PetriNetUnfolder]: For 42926/42926 co-relation queries the response was YES. [2023-08-30 18:45:54,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40103 conditions, 9959 events. 6934/9959 cut-off events. For 42926/42926 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 51881 event pairs, 3324 based on Foata normal form. 192/10151 useless extension candidates. Maximal degree in co-relation 40054. Up to 7795 conditions per place. [2023-08-30 18:45:54,406 INFO L137 encePairwiseOnDemand]: 671/677 looper letters, 106 selfloop transitions, 4 changer transitions 126/236 dead transitions. [2023-08-30 18:45:54,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 236 transitions, 2116 flow [2023-08-30 18:45:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:45:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:45:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2080 transitions. [2023-08-30 18:45:54,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43891116269255115 [2023-08-30 18:45:54,408 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2080 transitions. [2023-08-30 18:45:54,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2080 transitions. [2023-08-30 18:45:54,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:54,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2080 transitions. [2023-08-30 18:45:54,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 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) [2023-08-30 18:45:54,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 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) [2023-08-30 18:45:54,413 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 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) [2023-08-30 18:45:54,413 INFO L175 Difference]: Start difference. First operand has 143 places, 131 transitions, 1030 flow. Second operand 7 states and 2080 transitions. [2023-08-30 18:45:54,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 236 transitions, 2116 flow [2023-08-30 18:45:54,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 236 transitions, 1895 flow, removed 83 selfloop flow, removed 19 redundant places. [2023-08-30 18:45:54,871 INFO L231 Difference]: Finished difference. Result has 103 places, 110 transitions, 742 flow [2023-08-30 18:45:54,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=742, PETRI_PLACES=103, PETRI_TRANSITIONS=110} [2023-08-30 18:45:54,871 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 65 predicate places. [2023-08-30 18:45:54,872 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 110 transitions, 742 flow [2023-08-30 18:45:54,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 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) [2023-08-30 18:45:54,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:54,872 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, 1, 1, 1] [2023-08-30 18:45:54,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 18:45:54,873 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:45:54,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1200551145, now seen corresponding path program 1 times [2023-08-30 18:45:54,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:54,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306064228] [2023-08-30 18:45:54,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:54,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:45:54,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:54,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306064228] [2023-08-30 18:45:54,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306064228] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:45:54,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:45:54,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:45:54,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982422932] [2023-08-30 18:45:54,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:45:54,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:45:54,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:54,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:45:54,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:45:55,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 677 [2023-08-30 18:45:55,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 110 transitions, 742 flow. Second operand has 5 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 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) [2023-08-30 18:45:55,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:55,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 677 [2023-08-30 18:45:55,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:45:55,958 INFO L130 PetriNetUnfolder]: 4761/6778 cut-off events. [2023-08-30 18:45:55,959 INFO L131 PetriNetUnfolder]: For 10582/10582 co-relation queries the response was YES. [2023-08-30 18:45:55,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22541 conditions, 6778 events. 4761/6778 cut-off events. For 10582/10582 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 32066 event pairs, 2380 based on Foata normal form. 72/6850 useless extension candidates. Maximal degree in co-relation 22505. Up to 6062 conditions per place. [2023-08-30 18:45:55,989 INFO L137 encePairwiseOnDemand]: 669/677 looper letters, 83 selfloop transitions, 2 changer transitions 80/165 dead transitions. [2023-08-30 18:45:55,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 165 transitions, 1272 flow [2023-08-30 18:45:55,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:45:55,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:45:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2063 transitions. [2023-08-30 18:45:55,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43532390799746784 [2023-08-30 18:45:55,992 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2063 transitions. [2023-08-30 18:45:55,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2063 transitions. [2023-08-30 18:45:55,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:45:55,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2063 transitions. [2023-08-30 18:45:55,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 294.7142857142857) internal successors, (2063), 7 states have internal predecessors, (2063), 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) [2023-08-30 18:45:55,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 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) [2023-08-30 18:45:55,998 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 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) [2023-08-30 18:45:55,998 INFO L175 Difference]: Start difference. First operand has 103 places, 110 transitions, 742 flow. Second operand 7 states and 2063 transitions. [2023-08-30 18:45:55,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 165 transitions, 1272 flow [2023-08-30 18:45:56,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 165 transitions, 1241 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-30 18:45:56,024 INFO L231 Difference]: Finished difference. Result has 96 places, 85 transitions, 497 flow [2023-08-30 18:45:56,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=497, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2023-08-30 18:45:56,025 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 58 predicate places. [2023-08-30 18:45:56,025 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 497 flow [2023-08-30 18:45:56,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 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) [2023-08-30 18:45:56,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:45:56,025 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, 1, 1, 1] [2023-08-30 18:45:56,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 18:45:56,026 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:45:56,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:45:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1872973148, now seen corresponding path program 1 times [2023-08-30 18:45:56,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:45:56,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753828585] [2023-08-30 18:45:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:56,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:45:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:45:56,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:45:56,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753828585] [2023-08-30 18:45:56,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753828585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:45:56,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257423894] [2023-08-30 18:45:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:45:56,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:45:56,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:45:56,428 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:45:56,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 18:45:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:45:56,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 18:45:56,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:45:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:56,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:45:57,128 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:45:57,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 165 [2023-08-30 18:45:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:45:57,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257423894] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:45:57,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:45:57,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-08-30 18:45:57,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486840467] [2023-08-30 18:45:57,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:45:57,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 18:45:57,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:45:57,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 18:45:57,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2023-08-30 18:45:59,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 677 [2023-08-30 18:45:59,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 497 flow. Second operand has 28 states, 28 states have (on average 262.7857142857143) internal successors, (7358), 28 states have internal predecessors, (7358), 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) [2023-08-30 18:45:59,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:45:59,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 677 [2023-08-30 18:45:59,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:46:01,648 INFO L130 PetriNetUnfolder]: 10737/15267 cut-off events. [2023-08-30 18:46:01,648 INFO L131 PetriNetUnfolder]: For 21825/21825 co-relation queries the response was YES. [2023-08-30 18:46:01,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49510 conditions, 15267 events. 10737/15267 cut-off events. For 21825/21825 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 84455 event pairs, 1064 based on Foata normal form. 447/15714 useless extension candidates. Maximal degree in co-relation 49477. Up to 3520 conditions per place. [2023-08-30 18:46:01,718 INFO L137 encePairwiseOnDemand]: 663/677 looper letters, 393 selfloop transitions, 93 changer transitions 20/506 dead transitions. [2023-08-30 18:46:01,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 506 transitions, 3365 flow [2023-08-30 18:46:01,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-30 18:46:01,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-30 18:46:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 8465 transitions. [2023-08-30 18:46:01,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40334492781245534 [2023-08-30 18:46:01,726 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 8465 transitions. [2023-08-30 18:46:01,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 8465 transitions. [2023-08-30 18:46:01,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:46:01,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 8465 transitions. [2023-08-30 18:46:01,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 273.06451612903226) internal successors, (8465), 31 states have internal predecessors, (8465), 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) [2023-08-30 18:46:01,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 677.0) internal successors, (21664), 32 states have internal predecessors, (21664), 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) [2023-08-30 18:46:01,750 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 677.0) internal successors, (21664), 32 states have internal predecessors, (21664), 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) [2023-08-30 18:46:01,750 INFO L175 Difference]: Start difference. First operand has 96 places, 85 transitions, 497 flow. Second operand 31 states and 8465 transitions. [2023-08-30 18:46:01,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 506 transitions, 3365 flow [2023-08-30 18:46:01,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 506 transitions, 3237 flow, removed 57 selfloop flow, removed 12 redundant places. [2023-08-30 18:46:01,884 INFO L231 Difference]: Finished difference. Result has 116 places, 160 transitions, 1324 flow [2023-08-30 18:46:01,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1324, PETRI_PLACES=116, PETRI_TRANSITIONS=160} [2023-08-30 18:46:01,884 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 78 predicate places. [2023-08-30 18:46:01,884 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 160 transitions, 1324 flow [2023-08-30 18:46:01,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 262.7857142857143) internal successors, (7358), 28 states have internal predecessors, (7358), 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) [2023-08-30 18:46:01,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:46:01,885 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, 1, 1, 1] [2023-08-30 18:46:01,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 18:46:02,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 18:46:02,086 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:46:02,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:46:02,086 INFO L85 PathProgramCache]: Analyzing trace with hash 691585832, now seen corresponding path program 2 times [2023-08-30 18:46:02,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:46:02,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128626921] [2023-08-30 18:46:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:46:02,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:46:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:46:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:46:02,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:46:02,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128626921] [2023-08-30 18:46:02,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128626921] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:46:02,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257617577] [2023-08-30 18:46:02,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 18:46:02,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:46:02,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:46:02,473 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:46:02,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 18:46:02,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 18:46:02,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:46:02,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 18:46:02,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:46:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 18:46:02,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:46:02,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257617577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:46:02,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:46:02,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-08-30 18:46:02,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754163923] [2023-08-30 18:46:02,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:46:02,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:46:02,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:46:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:46:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-08-30 18:46:03,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 677 [2023-08-30 18:46:03,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 160 transitions, 1324 flow. Second operand has 9 states, 9 states have (on average 270.8888888888889) internal successors, (2438), 9 states have internal predecessors, (2438), 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) [2023-08-30 18:46:03,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:46:03,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 677 [2023-08-30 18:46:03,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:46:05,125 INFO L130 PetriNetUnfolder]: 12239/17496 cut-off events. [2023-08-30 18:46:05,125 INFO L131 PetriNetUnfolder]: For 57955/57955 co-relation queries the response was YES. [2023-08-30 18:46:05,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64748 conditions, 17496 events. 12239/17496 cut-off events. For 57955/57955 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 100856 event pairs, 2508 based on Foata normal form. 206/17702 useless extension candidates. Maximal degree in co-relation 64710. Up to 7214 conditions per place. [2023-08-30 18:46:05,208 INFO L137 encePairwiseOnDemand]: 666/677 looper letters, 203 selfloop transitions, 63 changer transitions 4/270 dead transitions. [2023-08-30 18:46:05,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 270 transitions, 2410 flow [2023-08-30 18:46:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 18:46:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 18:46:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2827 transitions. [2023-08-30 18:46:05,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175775480059084 [2023-08-30 18:46:05,212 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2827 transitions. [2023-08-30 18:46:05,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2827 transitions. [2023-08-30 18:46:05,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:46:05,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2827 transitions. [2023-08-30 18:46:05,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 282.7) internal successors, (2827), 10 states have internal predecessors, (2827), 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) [2023-08-30 18:46:05,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 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) [2023-08-30 18:46:05,220 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 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) [2023-08-30 18:46:05,220 INFO L175 Difference]: Start difference. First operand has 116 places, 160 transitions, 1324 flow. Second operand 10 states and 2827 transitions. [2023-08-30 18:46:05,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 270 transitions, 2410 flow [2023-08-30 18:46:05,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 270 transitions, 2307 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-08-30 18:46:05,533 INFO L231 Difference]: Finished difference. Result has 123 places, 175 transitions, 1578 flow [2023-08-30 18:46:05,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1578, PETRI_PLACES=123, PETRI_TRANSITIONS=175} [2023-08-30 18:46:05,534 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 85 predicate places. [2023-08-30 18:46:05,534 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 175 transitions, 1578 flow [2023-08-30 18:46:05,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 270.8888888888889) internal successors, (2438), 9 states have internal predecessors, (2438), 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) [2023-08-30 18:46:05,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:46:05,535 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, 1, 1, 1] [2023-08-30 18:46:05,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 18:46:05,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 18:46:05,740 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:46:05,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:46:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1361462932, now seen corresponding path program 3 times [2023-08-30 18:46:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:46:05,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731173524] [2023-08-30 18:46:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:46:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:46:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:46:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:46:06,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:46:06,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731173524] [2023-08-30 18:46:06,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731173524] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:46:06,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497944944] [2023-08-30 18:46:06,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 18:46:06,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:46:06,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:46:06,361 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:46:06,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 18:46:06,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 18:46:06,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:46:06,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 18:46:06,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:46:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 18:46:06,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:46:06,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497944944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:46:06,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:46:06,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2023-08-30 18:46:06,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004355436] [2023-08-30 18:46:06,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:46:06,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:46:06,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:46:06,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:46:06,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-08-30 18:46:06,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 677 [2023-08-30 18:46:06,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 175 transitions, 1578 flow. Second operand has 9 states, 9 states have (on average 270.8888888888889) internal successors, (2438), 9 states have internal predecessors, (2438), 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) [2023-08-30 18:46:06,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:46:06,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 677 [2023-08-30 18:46:06,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:46:08,684 INFO L130 PetriNetUnfolder]: 12635/18266 cut-off events. [2023-08-30 18:46:08,684 INFO L131 PetriNetUnfolder]: For 82008/82008 co-relation queries the response was YES. [2023-08-30 18:46:08,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67964 conditions, 18266 events. 12635/18266 cut-off events. For 82008/82008 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 108682 event pairs, 2664 based on Foata normal form. 550/18816 useless extension candidates. Maximal degree in co-relation 67924. Up to 7214 conditions per place. [2023-08-30 18:46:08,802 INFO L137 encePairwiseOnDemand]: 666/677 looper letters, 226 selfloop transitions, 62 changer transitions 5/293 dead transitions. [2023-08-30 18:46:08,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 293 transitions, 2880 flow [2023-08-30 18:46:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 18:46:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 18:46:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2825 transitions. [2023-08-30 18:46:08,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172821270310192 [2023-08-30 18:46:08,805 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2825 transitions. [2023-08-30 18:46:08,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2825 transitions. [2023-08-30 18:46:08,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:46:08,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2825 transitions. [2023-08-30 18:46:08,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 282.5) internal successors, (2825), 10 states have internal predecessors, (2825), 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) [2023-08-30 18:46:08,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 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) [2023-08-30 18:46:08,812 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 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) [2023-08-30 18:46:08,813 INFO L175 Difference]: Start difference. First operand has 123 places, 175 transitions, 1578 flow. Second operand 10 states and 2825 transitions. [2023-08-30 18:46:08,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 293 transitions, 2880 flow [2023-08-30 18:46:09,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 293 transitions, 2749 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-30 18:46:09,301 INFO L231 Difference]: Finished difference. Result has 130 places, 195 transitions, 1969 flow [2023-08-30 18:46:09,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1969, PETRI_PLACES=130, PETRI_TRANSITIONS=195} [2023-08-30 18:46:09,302 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2023-08-30 18:46:09,302 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 195 transitions, 1969 flow [2023-08-30 18:46:09,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 270.8888888888889) internal successors, (2438), 9 states have internal predecessors, (2438), 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) [2023-08-30 18:46:09,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:46:09,303 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, 1, 1, 1] [2023-08-30 18:46:09,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 18:46:09,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 18:46:09,508 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:46:09,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:46:09,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1069219752, now seen corresponding path program 4 times [2023-08-30 18:46:09,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:46:09,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376403033] [2023-08-30 18:46:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:46:09,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:46:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:46:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:46:09,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:46:09,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376403033] [2023-08-30 18:46:09,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376403033] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:46:09,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975060513] [2023-08-30 18:46:09,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 18:46:09,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:46:09,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:46:09,925 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:46:09,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 18:46:10,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 18:46:10,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:46:10,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 18:46:10,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:46:10,253 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:46:10,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 160 treesize of output 141 [2023-08-30 18:46:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:46:10,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:46:11,359 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:46:11,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 162 [2023-08-30 18:46:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:46:11,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975060513] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 18:46:11,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 18:46:11,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 21 [2023-08-30 18:46:11,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986741589] [2023-08-30 18:46:11,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:46:11,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 18:46:11,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:46:11,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 18:46:11,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-08-30 18:46:11,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 677 [2023-08-30 18:46:11,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 195 transitions, 1969 flow. Second operand has 8 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 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) [2023-08-30 18:46:11,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:46:11,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 677 [2023-08-30 18:46:11,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:46:14,415 INFO L130 PetriNetUnfolder]: 15077/22280 cut-off events. [2023-08-30 18:46:14,416 INFO L131 PetriNetUnfolder]: For 109947/109947 co-relation queries the response was YES. [2023-08-30 18:46:14,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85603 conditions, 22280 events. 15077/22280 cut-off events. For 109947/109947 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 142753 event pairs, 592 based on Foata normal form. 2/22282 useless extension candidates. Maximal degree in co-relation 85560. Up to 8452 conditions per place. [2023-08-30 18:46:14,621 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 261 selfloop transitions, 187 changer transitions 1/449 dead transitions. [2023-08-30 18:46:14,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 449 transitions, 4776 flow [2023-08-30 18:46:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 18:46:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 18:46:14,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3727 transitions. [2023-08-30 18:46:14,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4234746051585047 [2023-08-30 18:46:14,625 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3727 transitions. [2023-08-30 18:46:14,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3727 transitions. [2023-08-30 18:46:14,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:46:14,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3727 transitions. [2023-08-30 18:46:14,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 286.6923076923077) internal successors, (3727), 13 states have internal predecessors, (3727), 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) [2023-08-30 18:46:14,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 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) [2023-08-30 18:46:14,637 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 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) [2023-08-30 18:46:14,637 INFO L175 Difference]: Start difference. First operand has 130 places, 195 transitions, 1969 flow. Second operand 13 states and 3727 transitions. [2023-08-30 18:46:14,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 449 transitions, 4776 flow [2023-08-30 18:46:15,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 449 transitions, 4681 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-08-30 18:46:15,506 INFO L231 Difference]: Finished difference. Result has 144 places, 296 transitions, 3466 flow [2023-08-30 18:46:15,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3466, PETRI_PLACES=144, PETRI_TRANSITIONS=296} [2023-08-30 18:46:15,507 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 106 predicate places. [2023-08-30 18:46:15,507 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 296 transitions, 3466 flow [2023-08-30 18:46:15,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 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) [2023-08-30 18:46:15,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:46:15,508 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, 1, 1, 1] [2023-08-30 18:46:15,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 18:46:15,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 18:46:15,713 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:46:15,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:46:15,714 INFO L85 PathProgramCache]: Analyzing trace with hash 755674220, now seen corresponding path program 5 times [2023-08-30 18:46:15,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:46:15,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952298516] [2023-08-30 18:46:15,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:46:15,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:46:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:46:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:46:16,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:46:16,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952298516] [2023-08-30 18:46:16,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952298516] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:46:16,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489469222] [2023-08-30 18:46:16,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 18:46:16,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:46:16,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:46:16,144 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:46:16,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 18:46:16,282 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 18:46:16,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:46:16,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 18:46:16,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:46:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:46:16,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:46:17,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:46:17,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 165 [2023-08-30 18:46:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:46:17,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489469222] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 18:46:17,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 18:46:17,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 10] total 26 [2023-08-30 18:46:17,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907696163] [2023-08-30 18:46:17,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:46:17,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:46:17,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:46:17,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:46:17,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2023-08-30 18:46:17,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 677 [2023-08-30 18:46:17,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 296 transitions, 3466 flow. Second operand has 9 states, 9 states have (on average 262.8888888888889) internal successors, (2366), 9 states have internal predecessors, (2366), 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) [2023-08-30 18:46:17,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:46:17,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 677 [2023-08-30 18:46:17,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:46:21,114 INFO L130 PetriNetUnfolder]: 16719/25038 cut-off events. [2023-08-30 18:46:21,115 INFO L131 PetriNetUnfolder]: For 146334/146334 co-relation queries the response was YES. [2023-08-30 18:46:21,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108517 conditions, 25038 events. 16719/25038 cut-off events. For 146334/146334 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 165811 event pairs, 2106 based on Foata normal form. 4/25042 useless extension candidates. Maximal degree in co-relation 108468. Up to 7556 conditions per place. [2023-08-30 18:46:21,375 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 426 selfloop transitions, 161 changer transitions 3/590 dead transitions. [2023-08-30 18:46:21,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 590 transitions, 6874 flow [2023-08-30 18:46:21,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 18:46:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 18:46:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4406 transitions. [2023-08-30 18:46:21,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40675775480059084 [2023-08-30 18:46:21,379 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4406 transitions. [2023-08-30 18:46:21,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4406 transitions. [2023-08-30 18:46:21,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:46:21,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4406 transitions. [2023-08-30 18:46:21,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 275.375) internal successors, (4406), 16 states have internal predecessors, (4406), 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) [2023-08-30 18:46:21,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 677.0) internal successors, (11509), 17 states have internal predecessors, (11509), 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) [2023-08-30 18:46:21,389 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 677.0) internal successors, (11509), 17 states have internal predecessors, (11509), 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) [2023-08-30 18:46:21,390 INFO L175 Difference]: Start difference. First operand has 144 places, 296 transitions, 3466 flow. Second operand 16 states and 4406 transitions. [2023-08-30 18:46:21,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 590 transitions, 6874 flow [2023-08-30 18:46:22,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 590 transitions, 6830 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-30 18:46:22,642 INFO L231 Difference]: Finished difference. Result has 164 places, 375 transitions, 4951 flow [2023-08-30 18:46:22,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4951, PETRI_PLACES=164, PETRI_TRANSITIONS=375} [2023-08-30 18:46:22,643 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 126 predicate places. [2023-08-30 18:46:22,643 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 375 transitions, 4951 flow [2023-08-30 18:46:22,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 262.8888888888889) internal successors, (2366), 9 states have internal predecessors, (2366), 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) [2023-08-30 18:46:22,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:46:22,643 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, 1, 1, 1] [2023-08-30 18:46:22,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 18:46:22,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 18:46:22,844 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:46:22,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:46:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1054811520, now seen corresponding path program 6 times [2023-08-30 18:46:22,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:46:22,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912386433] [2023-08-30 18:46:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:46:22,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:46:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:46:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:46:23,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:46:23,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912386433] [2023-08-30 18:46:23,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912386433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:46:23,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174404653] [2023-08-30 18:46:23,230 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 18:46:23,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:46:23,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:46:23,232 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:46:23,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 18:46:23,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 18:46:23,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:46:23,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 18:46:23,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:46:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:46:23,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:46:24,120 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:46:24,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 165 [2023-08-30 18:46:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:46:24,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174404653] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:46:24,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:46:24,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 26 [2023-08-30 18:46:24,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119030102] [2023-08-30 18:46:24,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:46:24,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 18:46:24,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:46:24,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 18:46:24,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2023-08-30 18:46:25,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 677 [2023-08-30 18:46:25,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 375 transitions, 4951 flow. Second operand has 28 states, 28 states have (on average 262.7857142857143) internal successors, (7358), 28 states have internal predecessors, (7358), 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) [2023-08-30 18:46:25,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:46:25,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 677 [2023-08-30 18:46:25,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:46:29,604 INFO L130 PetriNetUnfolder]: 16865/25290 cut-off events. [2023-08-30 18:46:29,605 INFO L131 PetriNetUnfolder]: For 177584/177584 co-relation queries the response was YES. [2023-08-30 18:46:29,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118529 conditions, 25290 events. 16865/25290 cut-off events. For 177584/177584 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 168895 event pairs, 3256 based on Foata normal form. 10/25300 useless extension candidates. Maximal degree in co-relation 118474. Up to 8146 conditions per place. [2023-08-30 18:46:29,779 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 353 selfloop transitions, 140 changer transitions 14/507 dead transitions. [2023-08-30 18:46:29,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 507 transitions, 6820 flow [2023-08-30 18:46:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 18:46:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 18:46:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4325 transitions. [2023-08-30 18:46:29,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39927991137370755 [2023-08-30 18:46:29,783 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4325 transitions. [2023-08-30 18:46:29,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4325 transitions. [2023-08-30 18:46:29,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:46:29,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4325 transitions. [2023-08-30 18:46:29,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 270.3125) internal successors, (4325), 16 states have internal predecessors, (4325), 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) [2023-08-30 18:46:29,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 677.0) internal successors, (11509), 17 states have internal predecessors, (11509), 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) [2023-08-30 18:46:29,794 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 677.0) internal successors, (11509), 17 states have internal predecessors, (11509), 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) [2023-08-30 18:46:29,794 INFO L175 Difference]: Start difference. First operand has 164 places, 375 transitions, 4951 flow. Second operand 16 states and 4325 transitions. [2023-08-30 18:46:29,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 507 transitions, 6820 flow [2023-08-30 18:46:30,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 507 transitions, 6776 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-08-30 18:46:30,990 INFO L231 Difference]: Finished difference. Result has 182 places, 376 transitions, 5478 flow [2023-08-30 18:46:30,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=4907, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5478, PETRI_PLACES=182, PETRI_TRANSITIONS=376} [2023-08-30 18:46:30,991 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 144 predicate places. [2023-08-30 18:46:30,991 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 376 transitions, 5478 flow [2023-08-30 18:46:30,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 262.7857142857143) internal successors, (7358), 28 states have internal predecessors, (7358), 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) [2023-08-30 18:46:30,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:46:30,993 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, 1, 1, 1, 1] [2023-08-30 18:46:30,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 18:46:31,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:46:31,196 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:46:31,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:46:31,196 INFO L85 PathProgramCache]: Analyzing trace with hash -499241063, now seen corresponding path program 1 times [2023-08-30 18:46:31,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:46:31,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101235332] [2023-08-30 18:46:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:46:31,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:46:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:46:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:46:31,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:46:31,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101235332] [2023-08-30 18:46:31,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101235332] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:46:31,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385503895] [2023-08-30 18:46:31,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:46:31,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:46:31,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:46:31,353 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:46:31,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 18:46:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:46:31,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 18:46:31,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:46:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:46:31,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:46:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:46:31,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385503895] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 18:46:31,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 18:46:31,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-08-30 18:46:31,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113134067] [2023-08-30 18:46:31,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:46:31,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:46:31,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:46:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:46:31,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-30 18:46:31,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 677 [2023-08-30 18:46:31,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 376 transitions, 5478 flow. Second operand has 7 states, 7 states have (on average 274.85714285714283) internal successors, (1924), 7 states have internal predecessors, (1924), 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) [2023-08-30 18:46:31,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:46:31,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 677 [2023-08-30 18:46:31,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:46:35,417 INFO L130 PetriNetUnfolder]: 17237/25926 cut-off events. [2023-08-30 18:46:35,417 INFO L131 PetriNetUnfolder]: For 207930/207930 co-relation queries the response was YES. [2023-08-30 18:46:35,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124287 conditions, 25926 events. 17237/25926 cut-off events. For 207930/207930 co-relation queries the response was YES. Maximal size of possible extension queue 1221. Compared 175085 event pairs, 4358 based on Foata normal form. 328/26254 useless extension candidates. Maximal degree in co-relation 124227. Up to 11214 conditions per place. [2023-08-30 18:46:35,605 INFO L137 encePairwiseOnDemand]: 669/677 looper letters, 446 selfloop transitions, 41 changer transitions 0/487 dead transitions. [2023-08-30 18:46:35,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 487 transitions, 7583 flow [2023-08-30 18:46:35,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 18:46:35,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 18:46:35,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2274 transitions. [2023-08-30 18:46:35,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41986706056129985 [2023-08-30 18:46:35,608 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2274 transitions. [2023-08-30 18:46:35,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2274 transitions. [2023-08-30 18:46:35,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:46:35,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2274 transitions. [2023-08-30 18:46:35,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 284.25) internal successors, (2274), 8 states have internal predecessors, (2274), 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) [2023-08-30 18:46:35,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 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) [2023-08-30 18:46:35,612 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 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) [2023-08-30 18:46:35,612 INFO L175 Difference]: Start difference. First operand has 182 places, 376 transitions, 5478 flow. Second operand 8 states and 2274 transitions. [2023-08-30 18:46:35,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 487 transitions, 7583 flow [2023-08-30 18:46:37,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 487 transitions, 7407 flow, removed 37 selfloop flow, removed 11 redundant places. [2023-08-30 18:46:37,044 INFO L231 Difference]: Finished difference. Result has 178 places, 373 transitions, 5430 flow [2023-08-30 18:46:37,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=5225, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5430, PETRI_PLACES=178, PETRI_TRANSITIONS=373} [2023-08-30 18:46:37,044 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 140 predicate places. [2023-08-30 18:46:37,044 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 373 transitions, 5430 flow [2023-08-30 18:46:37,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 274.85714285714283) internal successors, (1924), 7 states have internal predecessors, (1924), 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) [2023-08-30 18:46:37,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:46:37,045 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, 1, 1, 1, 1] [2023-08-30 18:46:37,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 18:46:37,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:46:37,245 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:46:37,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:46:37,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1944526485, now seen corresponding path program 1 times [2023-08-30 18:46:37,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:46:37,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54827792] [2023-08-30 18:46:37,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:46:37,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:46:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:46:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:46:37,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:46:37,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54827792] [2023-08-30 18:46:37,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54827792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:46:37,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:46:37,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:46:37,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385364919] [2023-08-30 18:46:37,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:46:37,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:46:37,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:46:37,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:46:37,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-30 18:46:37,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 677 [2023-08-30 18:46:37,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 373 transitions, 5430 flow. Second operand has 9 states, 9 states have (on average 271.0) internal successors, (2439), 9 states have internal predecessors, (2439), 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) [2023-08-30 18:46:37,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:46:37,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 677 [2023-08-30 18:46:37,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:46:42,738 INFO L130 PetriNetUnfolder]: 23265/35014 cut-off events. [2023-08-30 18:46:42,738 INFO L131 PetriNetUnfolder]: For 290514/290514 co-relation queries the response was YES. [2023-08-30 18:46:43,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169720 conditions, 35014 events. 23265/35014 cut-off events. For 290514/290514 co-relation queries the response was YES. Maximal size of possible extension queue 1646. Compared 249355 event pairs, 6592 based on Foata normal form. 18/35032 useless extension candidates. Maximal degree in co-relation 169661. Up to 18984 conditions per place. [2023-08-30 18:46:43,101 INFO L137 encePairwiseOnDemand]: 667/677 looper letters, 460 selfloop transitions, 19 changer transitions 362/841 dead transitions. [2023-08-30 18:46:43,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 841 transitions, 13269 flow [2023-08-30 18:46:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 18:46:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 18:46:43,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2539 transitions. [2023-08-30 18:46:43,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41670769735762353 [2023-08-30 18:46:43,107 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2539 transitions. [2023-08-30 18:46:43,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2539 transitions. [2023-08-30 18:46:43,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:46:43,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2539 transitions. [2023-08-30 18:46:43,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 282.1111111111111) internal successors, (2539), 9 states have internal predecessors, (2539), 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) [2023-08-30 18:46:43,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 677.0) internal successors, (6770), 10 states have internal predecessors, (6770), 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) [2023-08-30 18:46:43,113 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 677.0) internal successors, (6770), 10 states have internal predecessors, (6770), 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) [2023-08-30 18:46:43,113 INFO L175 Difference]: Start difference. First operand has 178 places, 373 transitions, 5430 flow. Second operand 9 states and 2539 transitions. [2023-08-30 18:46:43,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 841 transitions, 13269 flow [2023-08-30 18:46:45,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 841 transitions, 13263 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 18:46:45,205 INFO L231 Difference]: Finished difference. Result has 188 places, 333 transitions, 4695 flow [2023-08-30 18:46:45,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=5424, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4695, PETRI_PLACES=188, PETRI_TRANSITIONS=333} [2023-08-30 18:46:45,205 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 150 predicate places. [2023-08-30 18:46:45,206 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 333 transitions, 4695 flow [2023-08-30 18:46:45,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 271.0) internal successors, (2439), 9 states have internal predecessors, (2439), 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) [2023-08-30 18:46:45,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:46:45,206 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, 1, 1, 1, 1] [2023-08-30 18:46:45,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 18:46:45,206 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:46:45,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:46:45,206 INFO L85 PathProgramCache]: Analyzing trace with hash 935700835, now seen corresponding path program 2 times [2023-08-30 18:46:45,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:46:45,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432372063] [2023-08-30 18:46:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:46:45,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:46:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:46:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:46:45,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:46:45,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432372063] [2023-08-30 18:46:45,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432372063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:46:45,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:46:45,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 18:46:45,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109962801] [2023-08-30 18:46:45,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:46:45,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 18:46:45,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:46:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 18:46:45,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-30 18:46:45,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 677 [2023-08-30 18:46:45,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 333 transitions, 4695 flow. Second operand has 10 states, 10 states have (on average 270.7) internal successors, (2707), 10 states have internal predecessors, (2707), 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) [2023-08-30 18:46:45,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:46:45,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 677 [2023-08-30 18:46:45,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:46:51,288 INFO L130 PetriNetUnfolder]: 23699/35438 cut-off events. [2023-08-30 18:46:51,288 INFO L131 PetriNetUnfolder]: For 302948/302948 co-relation queries the response was YES. [2023-08-30 18:46:51,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181610 conditions, 35438 events. 23699/35438 cut-off events. For 302948/302948 co-relation queries the response was YES. Maximal size of possible extension queue 1769. Compared 251148 event pairs, 8552 based on Foata normal form. 8/35446 useless extension candidates. Maximal degree in co-relation 181546. Up to 23316 conditions per place. [2023-08-30 18:46:51,862 INFO L137 encePairwiseOnDemand]: 668/677 looper letters, 441 selfloop transitions, 16 changer transitions 328/785 dead transitions. [2023-08-30 18:46:51,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 785 transitions, 12455 flow [2023-08-30 18:46:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 18:46:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 18:46:51,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2259 transitions. [2023-08-30 18:46:51,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41709748892171344 [2023-08-30 18:46:51,864 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2259 transitions. [2023-08-30 18:46:51,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2259 transitions. [2023-08-30 18:46:51,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:46:51,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2259 transitions. [2023-08-30 18:46:51,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 282.375) internal successors, (2259), 8 states have internal predecessors, (2259), 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) [2023-08-30 18:46:51,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 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) [2023-08-30 18:46:51,869 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 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) [2023-08-30 18:46:51,870 INFO L175 Difference]: Start difference. First operand has 188 places, 333 transitions, 4695 flow. Second operand 8 states and 2259 transitions. [2023-08-30 18:46:51,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 785 transitions, 12455 flow [2023-08-30 18:46:54,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 785 transitions, 12355 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-08-30 18:46:54,278 INFO L231 Difference]: Finished difference. Result has 192 places, 334 transitions, 4743 flow [2023-08-30 18:46:54,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=4633, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4743, PETRI_PLACES=192, PETRI_TRANSITIONS=334} [2023-08-30 18:46:54,279 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 154 predicate places. [2023-08-30 18:46:54,279 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 334 transitions, 4743 flow [2023-08-30 18:46:54,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 270.7) internal successors, (2707), 10 states have internal predecessors, (2707), 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) [2023-08-30 18:46:54,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:46:54,280 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, 1, 1, 1, 1] [2023-08-30 18:46:54,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 18:46:54,280 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:46:54,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:46:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash 726820333, now seen corresponding path program 3 times [2023-08-30 18:46:54,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:46:54,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492574008] [2023-08-30 18:46:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:46:54,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:46:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:46:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:46:54,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:46:54,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492574008] [2023-08-30 18:46:54,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492574008] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:46:54,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909412894] [2023-08-30 18:46:54,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 18:46:54,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:46:54,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:46:54,700 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:46:54,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 18:46:54,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 18:46:54,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:46:54,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 18:46:54,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:46:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:46:54,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:46:54,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909412894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:46:54,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:46:54,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2023-08-30 18:46:54,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248493810] [2023-08-30 18:46:54,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:46:54,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 18:46:54,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:46:54,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 18:46:54,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-08-30 18:46:55,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 677 [2023-08-30 18:46:55,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 334 transitions, 4743 flow. Second operand has 9 states, 9 states have (on average 270.0) internal successors, (2430), 9 states have internal predecessors, (2430), 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) [2023-08-30 18:46:55,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:46:55,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 677 [2023-08-30 18:46:55,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:47:00,085 INFO L130 PetriNetUnfolder]: 21697/32558 cut-off events. [2023-08-30 18:47:00,085 INFO L131 PetriNetUnfolder]: For 284515/284515 co-relation queries the response was YES. [2023-08-30 18:47:00,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174013 conditions, 32558 events. 21697/32558 cut-off events. For 284515/284515 co-relation queries the response was YES. Maximal size of possible extension queue 1673. Compared 228746 event pairs, 4950 based on Foata normal form. 2/32560 useless extension candidates. Maximal degree in co-relation 173948. Up to 12346 conditions per place. [2023-08-30 18:47:00,417 INFO L137 encePairwiseOnDemand]: 668/677 looper letters, 448 selfloop transitions, 71 changer transitions 12/531 dead transitions. [2023-08-30 18:47:00,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 531 transitions, 8046 flow [2023-08-30 18:47:00,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 18:47:00,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 18:47:00,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2272 transitions. [2023-08-30 18:47:00,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194977843426883 [2023-08-30 18:47:00,420 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2272 transitions. [2023-08-30 18:47:00,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2272 transitions. [2023-08-30 18:47:00,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:47:00,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2272 transitions. [2023-08-30 18:47:00,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 284.0) internal successors, (2272), 8 states have internal predecessors, (2272), 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) [2023-08-30 18:47:00,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 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) [2023-08-30 18:47:00,424 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 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) [2023-08-30 18:47:00,424 INFO L175 Difference]: Start difference. First operand has 192 places, 334 transitions, 4743 flow. Second operand 8 states and 2272 transitions. [2023-08-30 18:47:00,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 531 transitions, 8046 flow [2023-08-30 18:47:02,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 531 transitions, 7935 flow, removed 32 selfloop flow, removed 6 redundant places. [2023-08-30 18:47:02,300 INFO L231 Difference]: Finished difference. Result has 195 places, 363 transitions, 5602 flow [2023-08-30 18:47:02,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5602, PETRI_PLACES=195, PETRI_TRANSITIONS=363} [2023-08-30 18:47:02,301 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 157 predicate places. [2023-08-30 18:47:02,301 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 363 transitions, 5602 flow [2023-08-30 18:47:02,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 270.0) internal successors, (2430), 9 states have internal predecessors, (2430), 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) [2023-08-30 18:47:02,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:47:02,302 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, 1, 1, 1, 1, 1, 1] [2023-08-30 18:47:02,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 18:47:02,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 18:47:02,502 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:47:02,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:47:02,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1155113705, now seen corresponding path program 1 times [2023-08-30 18:47:02,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:47:02,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59554793] [2023-08-30 18:47:02,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:47:02,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:47:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:47:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 18:47:02,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:47:02,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59554793] [2023-08-30 18:47:02,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59554793] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:47:02,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:47:02,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 18:47:02,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371001167] [2023-08-30 18:47:02,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:47:02,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:47:02,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:47:02,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:47:02,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:47:02,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 677 [2023-08-30 18:47:02,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 363 transitions, 5602 flow. Second operand has 5 states, 5 states have (on average 285.8) internal successors, (1429), 5 states have internal predecessors, (1429), 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) [2023-08-30 18:47:02,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:47:02,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 677 [2023-08-30 18:47:02,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:47:05,242 INFO L130 PetriNetUnfolder]: 11143/16972 cut-off events. [2023-08-30 18:47:05,242 INFO L131 PetriNetUnfolder]: For 175871/175871 co-relation queries the response was YES. [2023-08-30 18:47:05,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92018 conditions, 16972 events. 11143/16972 cut-off events. For 175871/175871 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 109636 event pairs, 4528 based on Foata normal form. 880/17852 useless extension candidates. Maximal degree in co-relation 91951. Up to 11715 conditions per place. [2023-08-30 18:47:05,356 INFO L137 encePairwiseOnDemand]: 672/677 looper letters, 129 selfloop transitions, 4 changer transitions 135/268 dead transitions. [2023-08-30 18:47:05,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 268 transitions, 3695 flow [2023-08-30 18:47:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 18:47:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 18:47:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1475 transitions. [2023-08-30 18:47:05,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357459379615953 [2023-08-30 18:47:05,358 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1475 transitions. [2023-08-30 18:47:05,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1475 transitions. [2023-08-30 18:47:05,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:47:05,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1475 transitions. [2023-08-30 18:47:05,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 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) [2023-08-30 18:47:05,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 677.0) internal successors, (4062), 6 states have internal predecessors, (4062), 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) [2023-08-30 18:47:05,361 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 677.0) internal successors, (4062), 6 states have internal predecessors, (4062), 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) [2023-08-30 18:47:05,361 INFO L175 Difference]: Start difference. First operand has 195 places, 363 transitions, 5602 flow. Second operand 5 states and 1475 transitions. [2023-08-30 18:47:05,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 268 transitions, 3695 flow [2023-08-30 18:47:06,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 268 transitions, 3310 flow, removed 35 selfloop flow, removed 20 redundant places. [2023-08-30 18:47:06,558 INFO L231 Difference]: Finished difference. Result has 175 places, 133 transitions, 1278 flow [2023-08-30 18:47:06,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1278, PETRI_PLACES=175, PETRI_TRANSITIONS=133} [2023-08-30 18:47:06,558 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 137 predicate places. [2023-08-30 18:47:06,558 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 133 transitions, 1278 flow [2023-08-30 18:47:06,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.8) internal successors, (1429), 5 states have internal predecessors, (1429), 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) [2023-08-30 18:47:06,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:47:06,559 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, 1, 1, 1, 1, 1, 1] [2023-08-30 18:47:06,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 18:47:06,559 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:47:06,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:47:06,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1367699374, now seen corresponding path program 1 times [2023-08-30 18:47:06,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:47:06,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674106543] [2023-08-30 18:47:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:47:06,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:47:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:47:07,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:47:07,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:47:07,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674106543] [2023-08-30 18:47:07,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674106543] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:47:07,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040547089] [2023-08-30 18:47:07,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:47:07,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:47:07,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:47:07,404 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:47:07,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 18:47:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:47:07,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-30 18:47:07,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:47:07,748 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 [2023-08-30 18:47:07,827 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 [2023-08-30 18:47:07,910 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 [2023-08-30 18:47:08,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 18:47:08,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 18:47:08,139 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 18:47:08,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2023-08-30 18:47:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:47:08,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:47:09,890 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:47:09,890 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 1 case distinctions, treesize of input 266 treesize of output 158 [2023-08-30 18:47:09,958 INFO L321 Elim1Store]: treesize reduction 15, result has 55.9 percent of original size [2023-08-30 18:47:09,959 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 33916 treesize of output 32110 [2023-08-30 18:47:10,704 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:47:10,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4764 treesize of output 4500 [2023-08-30 18:47:10,826 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:47:10,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4476 treesize of output 4356 [2023-08-30 18:47:10,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:47:10,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4118 treesize of output 3630 [2023-08-30 18:55:09,953 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:55:09,953 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 1 case distinctions, treesize of input 103 treesize of output 67 [2023-08-30 18:55:09,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:55:10,000 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 2653 treesize of output 2526 [2023-08-30 18:55:10,148 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:55:10,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1373 treesize of output 1301 [2023-08-30 18:55:10,203 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:55:10,203 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 1046 treesize of output 927 [2023-08-30 18:55:10,265 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:55:10,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1149 treesize of output 1125 [2023-08-30 18:55:41,309 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:55:41,309 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 1 case distinctions, treesize of input 103 treesize of output 67 [2023-08-30 18:55:41,355 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:55:41,355 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 38477 treesize of output 36398 [2023-08-30 18:55:41,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:55:41,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1373 treesize of output 1349 [2023-08-30 18:55:41,622 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:55:41,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1325 treesize of output 1253 [2023-08-30 18:55:41,659 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:55:41,659 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 1014 treesize of output 895 [2023-08-30 18:55:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:55:56,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040547089] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:55:56,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:55:56,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 46 [2023-08-30 18:55:56,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323213306] [2023-08-30 18:55:56,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:55:56,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-08-30 18:55:56,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:55:56,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-08-30 18:55:56,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1963, Unknown=32, NotChecked=0, Total=2162 [2023-08-30 18:56:03,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 677 [2023-08-30 18:56:03,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 133 transitions, 1278 flow. Second operand has 47 states, 47 states have (on average 184.68085106382978) internal successors, (8680), 47 states have internal predecessors, (8680), 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) [2023-08-30 18:56:03,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:56:03,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 677 [2023-08-30 18:56:03,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:56:10,014 INFO L130 PetriNetUnfolder]: 22283/32058 cut-off events. [2023-08-30 18:56:10,015 INFO L131 PetriNetUnfolder]: For 287780/287780 co-relation queries the response was YES. [2023-08-30 18:56:10,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169764 conditions, 32058 events. 22283/32058 cut-off events. For 287780/287780 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 201679 event pairs, 1870 based on Foata normal form. 576/32634 useless extension candidates. Maximal degree in co-relation 169709. Up to 8390 conditions per place. [2023-08-30 18:56:10,440 INFO L137 encePairwiseOnDemand]: 657/677 looper letters, 502 selfloop transitions, 88 changer transitions 15/605 dead transitions. [2023-08-30 18:56:10,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 605 transitions, 6544 flow [2023-08-30 18:56:10,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 18:56:10,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 18:56:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4291 transitions. [2023-08-30 18:56:10,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28810259164764335 [2023-08-30 18:56:10,444 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4291 transitions. [2023-08-30 18:56:10,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4291 transitions. [2023-08-30 18:56:10,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:56:10,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4291 transitions. [2023-08-30 18:56:10,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 195.04545454545453) internal successors, (4291), 22 states have internal predecessors, (4291), 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) [2023-08-30 18:56:10,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 677.0) internal successors, (15571), 23 states have internal predecessors, (15571), 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) [2023-08-30 18:56:10,455 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 677.0) internal successors, (15571), 23 states have internal predecessors, (15571), 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) [2023-08-30 18:56:10,456 INFO L175 Difference]: Start difference. First operand has 175 places, 133 transitions, 1278 flow. Second operand 22 states and 4291 transitions. [2023-08-30 18:56:10,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 605 transitions, 6544 flow [2023-08-30 18:56:18,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 605 transitions, 6003 flow, removed 225 selfloop flow, removed 18 redundant places. [2023-08-30 18:56:18,175 INFO L231 Difference]: Finished difference. Result has 147 places, 198 transitions, 2110 flow [2023-08-30 18:56:18,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2110, PETRI_PLACES=147, PETRI_TRANSITIONS=198} [2023-08-30 18:56:18,175 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 109 predicate places. [2023-08-30 18:56:18,175 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 198 transitions, 2110 flow [2023-08-30 18:56:18,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 184.68085106382978) internal successors, (8680), 47 states have internal predecessors, (8680), 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) [2023-08-30 18:56:18,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:56:18,176 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, 1, 1, 1, 1, 1, 1] [2023-08-30 18:56:18,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 18:56:18,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:56:18,377 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:56:18,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:56:18,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1522311406, now seen corresponding path program 2 times [2023-08-30 18:56:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:56:18,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120741844] [2023-08-30 18:56:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:56:18,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:56:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:56:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:56:19,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:56:19,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120741844] [2023-08-30 18:56:19,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120741844] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:56:19,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90090000] [2023-08-30 18:56:19,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 18:56:19,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:56:19,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:56:19,113 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:56:19,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 18:56:19,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 18:56:19,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:56:19,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-30 18:56:19,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:56:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:56:19,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:56:20,142 INFO L321 Elim1Store]: treesize reduction 22, result has 75.0 percent of original size [2023-08-30 18:56:20,143 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 41 treesize of output 74 [2023-08-30 18:56:20,206 INFO L321 Elim1Store]: treesize reduction 22, result has 75.0 percent of original size [2023-08-30 18:56:20,207 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 41 treesize of output 74 [2023-08-30 18:56:20,357 INFO L321 Elim1Store]: treesize reduction 26, result has 87.3 percent of original size [2023-08-30 18:56:20,359 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 78 treesize of output 200 [2023-08-30 18:56:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:56:21,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90090000] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:56:21,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:56:21,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 37 [2023-08-30 18:56:21,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731713618] [2023-08-30 18:56:21,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:56:21,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-30 18:56:21,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:56:21,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-30 18:56:21,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2023-08-30 18:56:25,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 677 [2023-08-30 18:56:25,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 198 transitions, 2110 flow. Second operand has 37 states, 37 states have (on average 241.1891891891892) internal successors, (8924), 37 states have internal predecessors, (8924), 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) [2023-08-30 18:56:25,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:56:25,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 677 [2023-08-30 18:56:25,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:56:33,198 INFO L130 PetriNetUnfolder]: 33841/48436 cut-off events. [2023-08-30 18:56:33,199 INFO L131 PetriNetUnfolder]: For 262866/262866 co-relation queries the response was YES. [2023-08-30 18:56:33,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248537 conditions, 48436 events. 33841/48436 cut-off events. For 262866/262866 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 317935 event pairs, 9536 based on Foata normal form. 316/48752 useless extension candidates. Maximal degree in co-relation 248486. Up to 25574 conditions per place. [2023-08-30 18:56:33,816 INFO L137 encePairwiseOnDemand]: 659/677 looper letters, 474 selfloop transitions, 93 changer transitions 7/574 dead transitions. [2023-08-30 18:56:33,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 574 transitions, 6731 flow [2023-08-30 18:56:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 18:56:33,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 18:56:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4527 transitions. [2023-08-30 18:56:33,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37149187592319055 [2023-08-30 18:56:33,820 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4527 transitions. [2023-08-30 18:56:33,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4527 transitions. [2023-08-30 18:56:33,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:56:33,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4527 transitions. [2023-08-30 18:56:33,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 251.5) internal successors, (4527), 18 states have internal predecessors, (4527), 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) [2023-08-30 18:56:33,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 677.0) internal successors, (12863), 19 states have internal predecessors, (12863), 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) [2023-08-30 18:56:33,828 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 677.0) internal successors, (12863), 19 states have internal predecessors, (12863), 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) [2023-08-30 18:56:33,828 INFO L175 Difference]: Start difference. First operand has 147 places, 198 transitions, 2110 flow. Second operand 18 states and 4527 transitions. [2023-08-30 18:56:33,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 574 transitions, 6731 flow [2023-08-30 18:56:39,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 574 transitions, 6584 flow, removed 27 selfloop flow, removed 11 redundant places. [2023-08-30 18:56:39,610 INFO L231 Difference]: Finished difference. Result has 162 places, 271 transitions, 3185 flow [2023-08-30 18:56:39,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3185, PETRI_PLACES=162, PETRI_TRANSITIONS=271} [2023-08-30 18:56:39,611 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 124 predicate places. [2023-08-30 18:56:39,611 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 271 transitions, 3185 flow [2023-08-30 18:56:39,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 241.1891891891892) internal successors, (8924), 37 states have internal predecessors, (8924), 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) [2023-08-30 18:56:39,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:56:39,613 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, 1, 1, 1, 1, 1, 1] [2023-08-30 18:56:39,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 18:56:39,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:56:39,818 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:56:39,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:56:39,819 INFO L85 PathProgramCache]: Analyzing trace with hash 31784872, now seen corresponding path program 3 times [2023-08-30 18:56:39,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:56:39,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687090980] [2023-08-30 18:56:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:56:39,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:56:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:56:40,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:56:40,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:56:40,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687090980] [2023-08-30 18:56:40,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687090980] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:56:40,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950879334] [2023-08-30 18:56:40,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 18:56:40,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:56:40,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:56:40,774 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:56:40,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 18:56:40,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 18:56:40,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:56:40,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-30 18:56:40,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:56:41,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 18:56:41,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 18:56:41,380 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 18:56:41,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2023-08-30 18:56:41,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 18:56:41,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 18:56:41,470 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 18:56:41,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2023-08-30 18:56:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:56:41,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:56:42,819 INFO L321 Elim1Store]: treesize reduction 11, result has 95.6 percent of original size [2023-08-30 18:56:42,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 3328 treesize of output 3197 [2023-08-30 18:56:43,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:56:43,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1595 treesize of output 1492 [2023-08-30 18:56:43,120 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:56:43,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1467 treesize of output 1428 [2023-08-30 18:56:43,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:56:43,173 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 1403 treesize of output 1380 [2023-08-30 18:56:43,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:56:43,227 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 1371 treesize of output 1364 [2023-08-30 18:56:43,286 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:56:43,287 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 1355 treesize of output 1348 [2023-08-30 18:56:43,343 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 18:56:43,344 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 1339 treesize of output 1316 Killed by 15