./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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-word-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:38:11,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:38:11,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:38:11,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:38:11,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:38:11,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:38:11,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:38:11,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:38:11,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:38:11,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:38:11,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:38:11,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:38:11,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:38:11,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:38:11,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:38:11,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:38:11,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:38:11,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:38:11,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:38:11,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:38:11,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:38:11,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:38:11,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:38:11,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:38:11,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:38:11,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:38:11,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:38:11,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:38:11,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:38:11,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:38:11,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:38:11,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:38:11,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:38:11,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:38:11,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:38:11,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:38:11,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:38:11,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:38:11,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:38:11,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:38:11,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:38:11,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:38:11,392 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:38:11,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:38:11,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:38:11,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:38:11,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:38:11,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:38:11,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:38:11,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:38:11,396 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:38:11,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:38:11,397 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:38:11,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:38:11,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:38:11,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:38:11,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:38:11,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:38:11,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:38:11,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:38:11,399 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:38:11,399 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:38:11,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:38:11,399 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:38:11,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:38:11,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:38:11,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:38:11,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:38:11,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:38:11,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:38:11,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:38:11,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:38:11,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:38:11,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:38:11,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:38:11,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:38:11,402 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:38:11,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:38:11,403 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:38:11,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:38:11,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:38:11,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:38:11,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:38:11,736 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:38:11,736 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:38:11,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2023-09-01 07:38:12,968 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:38:13,154 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:38:13,155 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2023-09-01 07:38:13,161 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad8dbe9e/ea5088f23b76402aaa36515770439526/FLAG83eb0f43b [2023-09-01 07:38:13,172 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad8dbe9e/ea5088f23b76402aaa36515770439526 [2023-09-01 07:38:13,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:38:13,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:38:13,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:38:13,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:38:13,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:38:13,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a39496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13, skipping insertion in model container [2023-09-01 07:38:13,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:38:13,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:38:13,408 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-word-subst.wvr.c[3345,3358] [2023-09-01 07:38:13,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:38:13,431 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:38:13,474 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-word-subst.wvr.c[3345,3358] [2023-09-01 07:38:13,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:38:13,500 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:38:13,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13 WrapperNode [2023-09-01 07:38:13,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:38:13,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:38:13,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:38:13,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:38:13,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,560 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 191 [2023-09-01 07:38:13,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:38:13,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:38:13,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:38:13,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:38:13,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,614 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:38:13,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:38:13,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:38:13,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:38:13,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13" (1/1) ... [2023-09-01 07:38:13,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:38:13,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:13,662 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) [2023-09-01 07:38:13,671 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 [2023-09-01 07:38:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:38:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:38:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:38:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:38:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:38:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:38:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:38:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:38:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:38:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:38:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:38:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:38:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:38:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:38:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:38:13,702 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:38:13,802 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:38:13,804 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:38:14,262 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:38:14,272 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:38:14,285 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 07:38:14,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:38:14 BoogieIcfgContainer [2023-09-01 07:38:14,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:38:14,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:38:14,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:38:14,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:38:14,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:38:13" (1/3) ... [2023-09-01 07:38:14,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8b307f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:38:14, skipping insertion in model container [2023-09-01 07:38:14,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:13" (2/3) ... [2023-09-01 07:38:14,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8b307f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:38:14, skipping insertion in model container [2023-09-01 07:38:14,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:38:14" (3/3) ... [2023-09-01 07:38:14,300 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-09-01 07:38:14,307 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:38:14,315 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:38:14,316 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-09-01 07:38:14,316 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:38:14,441 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 07:38:14,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 331 transitions, 686 flow [2023-09-01 07:38:14,612 INFO L130 PetriNetUnfolder]: 29/328 cut-off events. [2023-09-01 07:38:14,615 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:38:14,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 328 events. 29/328 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 547 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2023-09-01 07:38:14,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 331 transitions, 686 flow [2023-09-01 07:38:14,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 304 transitions, 623 flow [2023-09-01 07:38:14,637 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:38:14,645 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 304 transitions, 623 flow [2023-09-01 07:38:14,647 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 304 transitions, 623 flow [2023-09-01 07:38:14,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 304 transitions, 623 flow [2023-09-01 07:38:14,706 INFO L130 PetriNetUnfolder]: 27/304 cut-off events. [2023-09-01 07:38:14,706 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:38:14,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 304 events. 27/304 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 541 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2023-09-01 07:38:14,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 11400 [2023-09-01 07:38:23,311 INFO L134 LiptonReduction]: Checked pairs total: 16072 [2023-09-01 07:38:23,311 INFO L136 LiptonReduction]: Total number of compositions: 326 [2023-09-01 07:38:23,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:38:23,331 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;@25e176e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:38:23,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-09-01 07:38:23,334 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:38:23,334 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:38:23,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:23,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:38:23,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:38:23,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash 40201, now seen corresponding path program 1 times [2023-09-01 07:38:23,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:23,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335014014] [2023-09-01 07:38:23,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:23,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:23,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:23,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335014014] [2023-09-01 07:38:23,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335014014] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:23,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:38:23,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:38:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63572170] [2023-09-01 07:38:23,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:23,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:38:23,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:23,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:38:23,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:38:23,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 657 [2023-09-01 07:38:23,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:23,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:23,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 657 [2023-09-01 07:38:23,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:25,461 INFO L130 PetriNetUnfolder]: 12137/16403 cut-off events. [2023-09-01 07:38:25,462 INFO L131 PetriNetUnfolder]: For 668/668 co-relation queries the response was YES. [2023-09-01 07:38:25,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33511 conditions, 16403 events. 12137/16403 cut-off events. For 668/668 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 83082 event pairs, 8860 based on Foata normal form. 0/8047 useless extension candidates. Maximal degree in co-relation 15562. Up to 8206 conditions per place. [2023-09-01 07:38:25,588 INFO L137 encePairwiseOnDemand]: 645/657 looper letters, 101 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2023-09-01 07:38:25,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 107 transitions, 458 flow [2023-09-01 07:38:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:38:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:38:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2023-09-01 07:38:25,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154743784880771 [2023-09-01 07:38:25,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2023-09-01 07:38:25,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2023-09-01 07:38:25,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:25,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2023-09-01 07:38:25,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:25,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:25,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:25,638 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1016 transitions. [2023-09-01 07:38:25,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 107 transitions, 458 flow [2023-09-01 07:38:25,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 107 transitions, 440 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:38:25,663 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 176 flow [2023-09-01 07:38:25,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2023-09-01 07:38:25,670 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-09-01 07:38:25,670 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 176 flow [2023-09-01 07:38:25,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:25,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:25,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:38:25,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:38:25,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:38:25,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:25,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1247914, now seen corresponding path program 1 times [2023-09-01 07:38:25,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:25,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278537931] [2023-09-01 07:38:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:25,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:25,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:25,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278537931] [2023-09-01 07:38:25,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278537931] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:25,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994327416] [2023-09-01 07:38:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:25,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:25,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:25,785 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) [2023-09-01 07:38:25,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:38:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:25,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:38:25,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:25,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:38:25,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:25,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994327416] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:38:25,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:38:25,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:38:25,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640461336] [2023-09-01 07:38:25,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:38:25,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:38:25,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:25,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:38:25,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:38:26,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 657 [2023-09-01 07:38:26,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 302.14285714285717) internal successors, (2115), 7 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:26,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:26,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 657 [2023-09-01 07:38:26,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:29,332 INFO L130 PetriNetUnfolder]: 30350/41006 cut-off events. [2023-09-01 07:38:29,332 INFO L131 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2023-09-01 07:38:29,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83339 conditions, 41006 events. 30350/41006 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 1708. Compared 231205 event pairs, 22150 based on Foata normal form. 0/20131 useless extension candidates. Maximal degree in co-relation 66587. Up to 8204 conditions per place. [2023-09-01 07:38:29,552 INFO L137 encePairwiseOnDemand]: 645/657 looper letters, 233 selfloop transitions, 33 changer transitions 0/266 dead transitions. [2023-09-01 07:38:29,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 266 transitions, 1200 flow [2023-09-01 07:38:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:38:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:38:29,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2382 transitions. [2023-09-01 07:38:29,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5179386823222439 [2023-09-01 07:38:29,558 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2382 transitions. [2023-09-01 07:38:29,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2382 transitions. [2023-09-01 07:38:29,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:29,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2382 transitions. [2023-09-01 07:38:29,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.2857142857143) internal successors, (2382), 7 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:29,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:29,574 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:29,574 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 176 flow. Second operand 7 states and 2382 transitions. [2023-09-01 07:38:29,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 266 transitions, 1200 flow [2023-09-01 07:38:29,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 266 transitions, 1176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:38:29,579 INFO L231 Difference]: Finished difference. Result has 62 places, 86 transitions, 383 flow [2023-09-01 07:38:29,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=62, PETRI_TRANSITIONS=86} [2023-09-01 07:38:29,580 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-09-01 07:38:29,581 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 86 transitions, 383 flow [2023-09-01 07:38:29,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.14285714285717) internal successors, (2115), 7 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:29,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:29,582 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 07:38:29,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:38:29,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:29,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:38:29,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:29,789 INFO L85 PathProgramCache]: Analyzing trace with hash 38686537, now seen corresponding path program 1 times [2023-09-01 07:38:29,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:29,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505255907] [2023-09-01 07:38:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:29,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:38:29,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:29,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505255907] [2023-09-01 07:38:29,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505255907] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:29,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:38:29,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:38:29,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591286075] [2023-09-01 07:38:29,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:29,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:38:29,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:29,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:38:29,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:38:29,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 657 [2023-09-01 07:38:29,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 86 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:29,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:29,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 657 [2023-09-01 07:38:29,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:32,425 INFO L130 PetriNetUnfolder]: 30341/40994 cut-off events. [2023-09-01 07:38:32,425 INFO L131 PetriNetUnfolder]: For 340/340 co-relation queries the response was YES. [2023-09-01 07:38:32,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83342 conditions, 40994 events. 30341/40994 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 1847. Compared 232998 event pairs, 22150 based on Foata normal form. 2/20132 useless extension candidates. Maximal degree in co-relation 49977. Up to 40994 conditions per place. [2023-09-01 07:38:32,773 INFO L137 encePairwiseOnDemand]: 653/657 looper letters, 73 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-09-01 07:38:32,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 450 flow [2023-09-01 07:38:32,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:38:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:38:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 960 transitions. [2023-09-01 07:38:32,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487062404870624 [2023-09-01 07:38:32,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 960 transitions. [2023-09-01 07:38:32,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 960 transitions. [2023-09-01 07:38:32,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:32,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 960 transitions. [2023-09-01 07:38:32,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:32,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:32,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:32,784 INFO L175 Difference]: Start difference. First operand has 62 places, 86 transitions, 383 flow. Second operand 3 states and 960 transitions. [2023-09-01 07:38:32,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 450 flow [2023-09-01 07:38:32,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 420 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 07:38:32,789 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 274 flow [2023-09-01 07:38:32,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2023-09-01 07:38:32,790 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-09-01 07:38:32,790 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 274 flow [2023-09-01 07:38:32,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:32,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:32,791 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:38:32,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:38:32,792 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:38:32,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:32,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1476890216, now seen corresponding path program 2 times [2023-09-01 07:38:32,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:32,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000104125] [2023-09-01 07:38:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:32,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:32,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000104125] [2023-09-01 07:38:32,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000104125] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:32,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443358101] [2023-09-01 07:38:32,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:38:32,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:32,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:32,901 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) [2023-09-01 07:38:32,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:38:32,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:38:32,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:38:32,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:38:32,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:38:32,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:38:32,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443358101] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:32,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:38:32,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:38:32,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791611751] [2023-09-01 07:38:32,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:32,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:38:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:38:32,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:38:33,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 657 [2023-09-01 07:38:33,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:33,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:33,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 657 [2023-09-01 07:38:33,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:35,160 INFO L130 PetriNetUnfolder]: 30341/40993 cut-off events. [2023-09-01 07:38:35,160 INFO L131 PetriNetUnfolder]: For 344/344 co-relation queries the response was YES. [2023-09-01 07:38:35,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83320 conditions, 40993 events. 30341/40993 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 1847. Compared 232971 event pairs, 22150 based on Foata normal form. 1/20132 useless extension candidates. Maximal degree in co-relation 83308. Up to 40988 conditions per place. [2023-09-01 07:38:35,340 INFO L137 encePairwiseOnDemand]: 654/657 looper letters, 67 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-09-01 07:38:35,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 410 flow [2023-09-01 07:38:35,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:38:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:38:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 966 transitions. [2023-09-01 07:38:35,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901065449010654 [2023-09-01 07:38:35,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 966 transitions. [2023-09-01 07:38:35,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 966 transitions. [2023-09-01 07:38:35,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:35,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 966 transitions. [2023-09-01 07:38:35,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,352 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,352 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 274 flow. Second operand 3 states and 966 transitions. [2023-09-01 07:38:35,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 410 flow [2023-09-01 07:38:35,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:38:35,355 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 275 flow [2023-09-01 07:38:35,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2023-09-01 07:38:35,357 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-09-01 07:38:35,357 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 275 flow [2023-09-01 07:38:35,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:35,358 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 07:38:35,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:38:35,569 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 [2023-09-01 07:38:35,570 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:38:35,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:35,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1845262550, now seen corresponding path program 1 times [2023-09-01 07:38:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:35,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091606267] [2023-09-01 07:38:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:35,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:35,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:35,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091606267] [2023-09-01 07:38:35,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091606267] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:35,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975344583] [2023-09-01 07:38:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:35,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:35,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:35,680 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) [2023-09-01 07:38:35,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:38:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:35,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 07:38:35,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:35,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:38:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:35,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975344583] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:38:35,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:38:35,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 07:38:35,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360713751] [2023-09-01 07:38:35,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:38:35,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:38:35,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:35,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:38:35,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:38:35,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 657 [2023-09-01 07:38:35,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 302.15384615384613) internal successors, (3928), 13 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:35,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 657 [2023-09-01 07:38:35,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:41,548 INFO L130 PetriNetUnfolder]: 66749/90181 cut-off events. [2023-09-01 07:38:41,548 INFO L131 PetriNetUnfolder]: For 782/782 co-relation queries the response was YES. [2023-09-01 07:38:41,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183280 conditions, 90181 events. 66749/90181 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 2486. Compared 533876 event pairs, 48730 based on Foata normal form. 12/44294 useless extension candidates. Maximal degree in co-relation 183267. Up to 9317 conditions per place. [2023-09-01 07:38:41,904 INFO L137 encePairwiseOnDemand]: 649/657 looper letters, 502 selfloop transitions, 51 changer transitions 0/553 dead transitions. [2023-09-01 07:38:41,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 553 transitions, 2521 flow [2023-09-01 07:38:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 07:38:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 07:38:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4177 transitions. [2023-09-01 07:38:41,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298072044647387 [2023-09-01 07:38:41,916 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4177 transitions. [2023-09-01 07:38:41,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4177 transitions. [2023-09-01 07:38:41,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:41,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4177 transitions. [2023-09-01 07:38:41,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 348.0833333333333) internal successors, (4177), 12 states have internal predecessors, (4177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:41,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 657.0) internal successors, (8541), 13 states have internal predecessors, (8541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:41,941 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 657.0) internal successors, (8541), 13 states have internal predecessors, (8541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:41,941 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 275 flow. Second operand 12 states and 4177 transitions. [2023-09-01 07:38:41,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 553 transitions, 2521 flow [2023-09-01 07:38:41,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 553 transitions, 2497 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:38:41,948 INFO L231 Difference]: Finished difference. Result has 74 places, 103 transitions, 611 flow [2023-09-01 07:38:41,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=611, PETRI_PLACES=74, PETRI_TRANSITIONS=103} [2023-09-01 07:38:41,949 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-09-01 07:38:41,950 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 103 transitions, 611 flow [2023-09-01 07:38:41,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 302.15384615384613) internal successors, (3928), 13 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:41,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:41,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:41,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:38:42,157 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 [2023-09-01 07:38:42,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:38:42,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash -834736654, now seen corresponding path program 1 times [2023-09-01 07:38:42,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:42,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716453879] [2023-09-01 07:38:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:42,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:42,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:42,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716453879] [2023-09-01 07:38:42,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716453879] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:42,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:38:42,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:38:42,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434370057] [2023-09-01 07:38:42,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:42,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:38:42,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:42,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:38:42,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:38:42,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 657 [2023-09-01 07:38:42,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 103 transitions, 611 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:42,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:42,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 657 [2023-09-01 07:38:42,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:51,536 INFO L130 PetriNetUnfolder]: 115501/156445 cut-off events. [2023-09-01 07:38:51,536 INFO L131 PetriNetUnfolder]: For 798/798 co-relation queries the response was YES. [2023-09-01 07:38:51,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317922 conditions, 156445 events. 115501/156445 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 4270. Compared 1037679 event pairs, 48730 based on Foata normal form. 0/78583 useless extension candidates. Maximal degree in co-relation 317903. Up to 90182 conditions per place. [2023-09-01 07:38:52,496 INFO L137 encePairwiseOnDemand]: 653/657 looper letters, 140 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2023-09-01 07:38:52,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 978 flow [2023-09-01 07:38:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:38:52,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:38:52,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1018 transitions. [2023-09-01 07:38:52,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164890918315576 [2023-09-01 07:38:52,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1018 transitions. [2023-09-01 07:38:52,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1018 transitions. [2023-09-01 07:38:52,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:52,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1018 transitions. [2023-09-01 07:38:52,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.3333333333333) internal successors, (1018), 3 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:52,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:52,505 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:52,506 INFO L175 Difference]: Start difference. First operand has 74 places, 103 transitions, 611 flow. Second operand 3 states and 1018 transitions. [2023-09-01 07:38:52,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 978 flow [2023-09-01 07:38:52,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 142 transitions, 834 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-09-01 07:38:52,511 INFO L231 Difference]: Finished difference. Result has 72 places, 104 transitions, 481 flow [2023-09-01 07:38:52,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=72, PETRI_TRANSITIONS=104} [2023-09-01 07:38:52,511 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-09-01 07:38:52,512 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 104 transitions, 481 flow [2023-09-01 07:38:52,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:52,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:52,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:52,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:38:52,513 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:38:52,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:52,513 INFO L85 PathProgramCache]: Analyzing trace with hash -834735184, now seen corresponding path program 1 times [2023-09-01 07:38:52,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:52,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187763544] [2023-09-01 07:38:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:52,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:52,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:52,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187763544] [2023-09-01 07:38:52,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187763544] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:52,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:38:52,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:38:52,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675925553] [2023-09-01 07:38:52,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:52,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:38:52,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:52,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:38:52,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:38:52,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 657 [2023-09-01 07:38:52,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 104 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:52,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:52,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 657 [2023-09-01 07:38:52,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:10,092 INFO L130 PetriNetUnfolder]: 213566/287611 cut-off events. [2023-09-01 07:39:10,093 INFO L131 PetriNetUnfolder]: For 22386/22386 co-relation queries the response was YES. [2023-09-01 07:39:10,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607569 conditions, 287611 events. 213566/287611 cut-off events. For 22386/22386 co-relation queries the response was YES. Maximal size of possible extension queue 7121. Compared 1942832 event pairs, 155584 based on Foata normal form. 0/158292 useless extension candidates. Maximal degree in co-relation 607550. Up to 145753 conditions per place. [2023-09-01 07:39:11,645 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 180 selfloop transitions, 4 changer transitions 0/184 dead transitions. [2023-09-01 07:39:11,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 184 transitions, 1194 flow [2023-09-01 07:39:11,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:39:11,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:39:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1285 transitions. [2023-09-01 07:39:11,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4889649923896499 [2023-09-01 07:39:11,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1285 transitions. [2023-09-01 07:39:11,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1285 transitions. [2023-09-01 07:39:11,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:11,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1285 transitions. [2023-09-01 07:39:11,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:11,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:11,657 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:11,657 INFO L175 Difference]: Start difference. First operand has 72 places, 104 transitions, 481 flow. Second operand 4 states and 1285 transitions. [2023-09-01 07:39:11,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 184 transitions, 1194 flow [2023-09-01 07:39:11,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 184 transitions, 1190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:39:11,712 INFO L231 Difference]: Finished difference. Result has 76 places, 105 transitions, 498 flow [2023-09-01 07:39:11,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=498, PETRI_PLACES=76, PETRI_TRANSITIONS=105} [2023-09-01 07:39:11,713 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-09-01 07:39:11,713 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 105 transitions, 498 flow [2023-09-01 07:39:11,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:11,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:11,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:39:11,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 07:39:11,715 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:39:11,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:11,716 INFO L85 PathProgramCache]: Analyzing trace with hash 727280455, now seen corresponding path program 1 times [2023-09-01 07:39:11,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:11,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573171539] [2023-09-01 07:39:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:11,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:11,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:11,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573171539] [2023-09-01 07:39:11,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573171539] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:11,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402609965] [2023-09-01 07:39:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:11,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:11,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:11,818 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) [2023-09-01 07:39:11,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:39:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:11,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:39:11,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:39:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:11,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:39:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:12,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402609965] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:12,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:39:12,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 2] total 8 [2023-09-01 07:39:12,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701023535] [2023-09-01 07:39:12,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:12,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:39:12,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:12,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:39:12,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-09-01 07:39:12,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 657 [2023-09-01 07:39:12,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 105 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:12,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:12,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 657 [2023-09-01 07:39:12,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:28,360 INFO L130 PetriNetUnfolder]: 198980/269109 cut-off events. [2023-09-01 07:39:28,360 INFO L131 PetriNetUnfolder]: For 33672/33672 co-relation queries the response was YES. [2023-09-01 07:39:29,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570064 conditions, 269109 events. 198980/269109 cut-off events. For 33672/33672 co-relation queries the response was YES. Maximal size of possible extension queue 6703. Compared 1822220 event pairs, 146938 based on Foata normal form. 7832/164738 useless extension candidates. Maximal degree in co-relation 570042. Up to 269109 conditions per place. [2023-09-01 07:39:29,987 INFO L137 encePairwiseOnDemand]: 655/657 looper letters, 102 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2023-09-01 07:39:29,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 103 transitions, 694 flow [2023-09-01 07:39:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:39:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:39:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2023-09-01 07:39:29,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606798579401319 [2023-09-01 07:39:29,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2023-09-01 07:39:29,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2023-09-01 07:39:29,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:29,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2023-09-01 07:39:29,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:29,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:29,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:29,995 INFO L175 Difference]: Start difference. First operand has 76 places, 105 transitions, 498 flow. Second operand 3 states and 908 transitions. [2023-09-01 07:39:29,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 103 transitions, 694 flow [2023-09-01 07:39:30,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 103 transitions, 686 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 07:39:30,022 INFO L231 Difference]: Finished difference. Result has 75 places, 103 transitions, 482 flow [2023-09-01 07:39:30,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=75, PETRI_TRANSITIONS=103} [2023-09-01 07:39:30,023 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-09-01 07:39:30,023 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 103 transitions, 482 flow [2023-09-01 07:39:30,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:30,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:30,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:39:30,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 07:39:30,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:30,229 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:39:30,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:30,230 INFO L85 PathProgramCache]: Analyzing trace with hash 727280578, now seen corresponding path program 1 times [2023-09-01 07:39:30,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:30,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618812436] [2023-09-01 07:39:30,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:30,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:30,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:30,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:30,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618812436] [2023-09-01 07:39:30,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618812436] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:30,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891879025] [2023-09-01 07:39:30,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:30,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:30,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:30,351 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) [2023-09-01 07:39:30,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:39:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:30,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:39:30,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:39:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:39:30,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:39:30,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891879025] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:30,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:39:30,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-09-01 07:39:30,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586166998] [2023-09-01 07:39:30,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:30,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:39:30,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:30,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:39:30,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:39:30,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 657 [2023-09-01 07:39:30,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 103 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 307.25) internal successors, (1229), 4 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:30,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:30,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 657 [2023-09-01 07:39:30,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:45,588 INFO L130 PetriNetUnfolder]: 188310/254523 cut-off events. [2023-09-01 07:39:45,588 INFO L131 PetriNetUnfolder]: For 18373/18373 co-relation queries the response was YES. [2023-09-01 07:39:46,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536467 conditions, 254523 events. 188310/254523 cut-off events. For 18373/18373 co-relation queries the response was YES. Maximal size of possible extension queue 6330. Compared 1711744 event pairs, 138292 based on Foata normal form. 3916/151604 useless extension candidates. Maximal degree in co-relation 536445. Up to 254511 conditions per place. [2023-09-01 07:39:47,171 INFO L137 encePairwiseOnDemand]: 654/657 looper letters, 90 selfloop transitions, 12 changer transitions 0/102 dead transitions. [2023-09-01 07:39:47,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 102 transitions, 682 flow [2023-09-01 07:39:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:39:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:39:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1272 transitions. [2023-09-01 07:39:47,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840182648401826 [2023-09-01 07:39:47,174 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1272 transitions. [2023-09-01 07:39:47,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1272 transitions. [2023-09-01 07:39:47,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:47,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1272 transitions. [2023-09-01 07:39:47,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,181 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,181 INFO L175 Difference]: Start difference. First operand has 75 places, 103 transitions, 482 flow. Second operand 4 states and 1272 transitions. [2023-09-01 07:39:47,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 102 transitions, 682 flow [2023-09-01 07:39:47,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 102 transitions, 680 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:39:47,204 INFO L231 Difference]: Finished difference. Result has 75 places, 102 transitions, 500 flow [2023-09-01 07:39:47,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=500, PETRI_PLACES=75, PETRI_TRANSITIONS=102} [2023-09-01 07:39:47,205 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-09-01 07:39:47,205 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 102 transitions, 500 flow [2023-09-01 07:39:47,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 307.25) internal successors, (1229), 4 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:47,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:39:47,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 07:39:47,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:47,407 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:39:47,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1016688971, now seen corresponding path program 1 times [2023-09-01 07:39:47,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:47,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987299206] [2023-09-01 07:39:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:47,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:47,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:47,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987299206] [2023-09-01 07:39:47,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987299206] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:47,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:39:47,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:39:47,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810919223] [2023-09-01 07:39:47,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:47,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 07:39:47,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:47,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 07:39:47,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:39:47,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 657 [2023-09-01 07:39:47,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 102 transitions, 500 flow. Second operand has 6 states, 6 states have (on average 293.6666666666667) internal successors, (1762), 6 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:47,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 657 [2023-09-01 07:39:47,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:04,054 INFO L130 PetriNetUnfolder]: 186864/252541 cut-off events. [2023-09-01 07:40:04,054 INFO L131 PetriNetUnfolder]: For 14508/14508 co-relation queries the response was YES. [2023-09-01 07:40:04,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532294 conditions, 252541 events. 186864/252541 cut-off events. For 14508/14508 co-relation queries the response was YES. Maximal size of possible extension queue 6304. Compared 1706331 event pairs, 125290 based on Foata normal form. 0/146779 useless extension candidates. Maximal degree in co-relation 532272. Up to 211539 conditions per place. [2023-09-01 07:40:05,491 INFO L137 encePairwiseOnDemand]: 650/657 looper letters, 144 selfloop transitions, 26 changer transitions 0/170 dead transitions. [2023-09-01 07:40:05,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 170 transitions, 1005 flow [2023-09-01 07:40:05,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:40:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:40:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2163 transitions. [2023-09-01 07:40:05,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703196347031963 [2023-09-01 07:40:05,495 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2163 transitions. [2023-09-01 07:40:05,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2163 transitions. [2023-09-01 07:40:05,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:05,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2163 transitions. [2023-09-01 07:40:05,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:05,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:05,506 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:05,506 INFO L175 Difference]: Start difference. First operand has 75 places, 102 transitions, 500 flow. Second operand 7 states and 2163 transitions. [2023-09-01 07:40:05,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 170 transitions, 1005 flow [2023-09-01 07:40:05,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 170 transitions, 992 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:40:05,532 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 587 flow [2023-09-01 07:40:05,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=587, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-09-01 07:40:05,535 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2023-09-01 07:40:05,535 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 587 flow [2023-09-01 07:40:05,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 293.6666666666667) internal successors, (1762), 6 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:05,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:05,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:40:05,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 07:40:05,536 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:40:05,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:05,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1016689078, now seen corresponding path program 1 times [2023-09-01 07:40:05,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:05,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817724029] [2023-09-01 07:40:05,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:05,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:05,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:05,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817724029] [2023-09-01 07:40:05,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817724029] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:05,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:05,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:40:05,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680555184] [2023-09-01 07:40:05,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:05,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:40:05,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:05,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:40:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:40:05,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 657 [2023-09-01 07:40:05,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 587 flow. Second operand has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:05,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:05,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 657 [2023-09-01 07:40:05,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:21,004 INFO L130 PetriNetUnfolder]: 178911/241640 cut-off events. [2023-09-01 07:40:21,004 INFO L131 PetriNetUnfolder]: For 24277/24277 co-relation queries the response was YES. [2023-09-01 07:40:21,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520356 conditions, 241640 events. 178911/241640 cut-off events. For 24277/24277 co-relation queries the response was YES. Maximal size of possible extension queue 5893. Compared 1610101 event pairs, 124699 based on Foata normal form. 2948/153032 useless extension candidates. Maximal degree in co-relation 520331. Up to 116371 conditions per place. [2023-09-01 07:40:22,396 INFO L137 encePairwiseOnDemand]: 651/657 looper letters, 193 selfloop transitions, 15 changer transitions 0/208 dead transitions. [2023-09-01 07:40:22,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 208 transitions, 1463 flow [2023-09-01 07:40:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:40:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:40:22,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1877 transitions. [2023-09-01 07:40:22,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47615423642820903 [2023-09-01 07:40:22,400 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1877 transitions. [2023-09-01 07:40:22,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1877 transitions. [2023-09-01 07:40:22,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:22,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1877 transitions. [2023-09-01 07:40:22,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 312.8333333333333) internal successors, (1877), 6 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,407 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,407 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 587 flow. Second operand 6 states and 1877 transitions. [2023-09-01 07:40:22,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 208 transitions, 1463 flow [2023-09-01 07:40:22,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 208 transitions, 1446 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 07:40:22,471 INFO L231 Difference]: Finished difference. Result has 88 places, 116 transitions, 767 flow [2023-09-01 07:40:22,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=767, PETRI_PLACES=88, PETRI_TRANSITIONS=116} [2023-09-01 07:40:22,472 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2023-09-01 07:40:22,472 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 116 transitions, 767 flow [2023-09-01 07:40:22,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:22,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:40:22,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 07:40:22,473 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:40:22,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:22,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1016689010, now seen corresponding path program 1 times [2023-09-01 07:40:22,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:22,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539006592] [2023-09-01 07:40:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:22,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:22,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:22,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539006592] [2023-09-01 07:40:22,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539006592] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:22,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:22,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:40:22,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151966490] [2023-09-01 07:40:22,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:22,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:22,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:22,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:22,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 657 [2023-09-01 07:40:22,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 116 transitions, 767 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:22,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 657 [2023-09-01 07:40:22,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:50,593 INFO L130 PetriNetUnfolder]: 303360/410389 cut-off events. [2023-09-01 07:40:50,593 INFO L131 PetriNetUnfolder]: For 50148/50148 co-relation queries the response was YES. [2023-09-01 07:40:52,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908784 conditions, 410389 events. 303360/410389 cut-off events. For 50148/50148 co-relation queries the response was YES. Maximal size of possible extension queue 9805. Compared 2960906 event pairs, 130609 based on Foata normal form. 0/262829 useless extension candidates. Maximal degree in co-relation 908756. Up to 241641 conditions per place. [2023-09-01 07:40:53,683 INFO L137 encePairwiseOnDemand]: 653/657 looper letters, 152 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-09-01 07:40:53,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 154 transitions, 1183 flow [2023-09-01 07:40:53,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1012 transitions. [2023-09-01 07:40:53,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134449518011162 [2023-09-01 07:40:53,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1012 transitions. [2023-09-01 07:40:53,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1012 transitions. [2023-09-01 07:40:53,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:53,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1012 transitions. [2023-09-01 07:40:53,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:53,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:53,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:53,689 INFO L175 Difference]: Start difference. First operand has 88 places, 116 transitions, 767 flow. Second operand 3 states and 1012 transitions. [2023-09-01 07:40:53,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 154 transitions, 1183 flow [2023-09-01 07:40:53,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 154 transitions, 1180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:53,799 INFO L231 Difference]: Finished difference. Result has 90 places, 117 transitions, 778 flow [2023-09-01 07:40:53,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=778, PETRI_PLACES=90, PETRI_TRANSITIONS=117} [2023-09-01 07:40:53,799 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2023-09-01 07:40:53,799 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 117 transitions, 778 flow [2023-09-01 07:40:53,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:53,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:53,800 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:40:53,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 07:40:53,800 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:40:53,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:53,801 INFO L85 PathProgramCache]: Analyzing trace with hash 977009876, now seen corresponding path program 1 times [2023-09-01 07:40:53,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:53,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738667358] [2023-09-01 07:40:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:53,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:40:53,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:53,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738667358] [2023-09-01 07:40:53,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738667358] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:53,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:53,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:40:53,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917894558] [2023-09-01 07:40:53,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:53,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:40:53,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:53,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:40:53,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:40:54,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 657 [2023-09-01 07:40:54,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 117 transitions, 778 flow. Second operand has 5 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) [2023-09-01 07:40:54,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:54,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 657 [2023-09-01 07:40:54,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:17,154 INFO L130 PetriNetUnfolder]: 210082/287291 cut-off events. [2023-09-01 07:41:17,154 INFO L131 PetriNetUnfolder]: For 74258/74258 co-relation queries the response was YES. [2023-09-01 07:41:18,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665267 conditions, 287291 events. 210082/287291 cut-off events. For 74258/74258 co-relation queries the response was YES. Maximal size of possible extension queue 7162. Compared 2026125 event pairs, 135567 based on Foata normal form. 0/198587 useless extension candidates. Maximal degree in co-relation 665238. Up to 216106 conditions per place. [2023-09-01 07:41:19,091 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 203 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2023-09-01 07:41:19,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 207 transitions, 1547 flow [2023-09-01 07:41:19,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:41:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:41:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1588 transitions. [2023-09-01 07:41:19,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834094368340944 [2023-09-01 07:41:19,095 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1588 transitions. [2023-09-01 07:41:19,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1588 transitions. [2023-09-01 07:41:19,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:19,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1588 transitions. [2023-09-01 07:41:19,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 317.6) internal successors, (1588), 5 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:19,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:19,102 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:19,102 INFO L175 Difference]: Start difference. First operand has 90 places, 117 transitions, 778 flow. Second operand 5 states and 1588 transitions. [2023-09-01 07:41:19,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 207 transitions, 1547 flow [2023-09-01 07:41:19,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 207 transitions, 1541 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:41:19,345 INFO L231 Difference]: Finished difference. Result has 95 places, 118 transitions, 795 flow [2023-09-01 07:41:19,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=795, PETRI_PLACES=95, PETRI_TRANSITIONS=118} [2023-09-01 07:41:19,346 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2023-09-01 07:41:19,346 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 118 transitions, 795 flow [2023-09-01 07:41:19,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2023-09-01 07:41:19,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:19,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:41:19,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 07:41:19,347 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:41:19,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:19,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1124717240, now seen corresponding path program 1 times [2023-09-01 07:41:19,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:19,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304307831] [2023-09-01 07:41:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:19,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:41:19,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:19,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304307831] [2023-09-01 07:41:19,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304307831] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:41:19,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863962900] [2023-09-01 07:41:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:19,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:19,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:41:19,498 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) [2023-09-01 07:41:19,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:41:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:19,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:41:19,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:41:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:41:19,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:41:19,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863962900] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:41:19,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:41:19,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-09-01 07:41:19,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672848186] [2023-09-01 07:41:19,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:41:19,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:41:19,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:19,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:41:19,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:41:19,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 657 [2023-09-01 07:41:19,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 118 transitions, 795 flow. Second operand has 4 states, 4 states have (on average 307.75) internal successors, (1231), 4 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:19,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:19,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 657 [2023-09-01 07:41:19,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:39,122 INFO L130 PetriNetUnfolder]: 194176/265489 cut-off events. [2023-09-01 07:41:39,122 INFO L131 PetriNetUnfolder]: For 92671/92671 co-relation queries the response was YES. [2023-09-01 07:41:40,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612870 conditions, 265489 events. 194176/265489 cut-off events. For 92671/92671 co-relation queries the response was YES. Maximal size of possible extension queue 6522. Compared 1834210 event pairs, 147558 based on Foata normal form. 5896/194541 useless extension candidates. Maximal degree in co-relation 612838. Up to 265442 conditions per place. [2023-09-01 07:41:41,016 INFO L137 encePairwiseOnDemand]: 654/657 looper letters, 93 selfloop transitions, 23 changer transitions 0/116 dead transitions. [2023-09-01 07:41:41,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 116 transitions, 1014 flow [2023-09-01 07:41:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:41:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:41:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1271 transitions. [2023-09-01 07:41:41,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836377473363775 [2023-09-01 07:41:41,018 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1271 transitions. [2023-09-01 07:41:41,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1271 transitions. [2023-09-01 07:41:41,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:41,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1271 transitions. [2023-09-01 07:41:41,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 317.75) internal successors, (1271), 4 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:41,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:41,024 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:41,024 INFO L175 Difference]: Start difference. First operand has 95 places, 118 transitions, 795 flow. Second operand 4 states and 1271 transitions. [2023-09-01 07:41:41,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 116 transitions, 1014 flow [2023-09-01 07:41:41,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 116 transitions, 930 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:41:41,176 INFO L231 Difference]: Finished difference. Result has 91 places, 116 transitions, 744 flow [2023-09-01 07:41:41,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=744, PETRI_PLACES=91, PETRI_TRANSITIONS=116} [2023-09-01 07:41:41,177 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2023-09-01 07:41:41,177 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 116 transitions, 744 flow [2023-09-01 07:41:41,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 307.75) internal successors, (1231), 4 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:41,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:41,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:41:41,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 07:41:41,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:41:41,384 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:41:41,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1453888922, now seen corresponding path program 1 times [2023-09-01 07:41:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:41,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455855308] [2023-09-01 07:41:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:41,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:41:41,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:41,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455855308] [2023-09-01 07:41:41,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455855308] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:41:41,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:41:41,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:41:41,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134113108] [2023-09-01 07:41:41,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:41:41,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:41:41,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:41,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:41:41,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:41:41,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 657 [2023-09-01 07:41:41,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 116 transitions, 744 flow. Second operand has 5 states, 5 states have (on average 294.2) internal successors, (1471), 5 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:41:41,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:41,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 657 [2023-09-01 07:41:41,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:42:00,278 INFO L130 PetriNetUnfolder]: 192216/262793 cut-off events. [2023-09-01 07:42:00,279 INFO L131 PetriNetUnfolder]: For 75370/75370 co-relation queries the response was YES. [2023-09-01 07:42:01,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606892 conditions, 262793 events. 192216/262793 cut-off events. For 75370/75370 co-relation queries the response was YES. Maximal size of possible extension queue 6575. Compared 1821864 event pairs, 127190 based on Foata normal form. 0/186936 useless extension candidates. Maximal degree in co-relation 606862. Up to 213459 conditions per place. [2023-09-01 07:42:02,263 INFO L137 encePairwiseOnDemand]: 651/657 looper letters, 154 selfloop transitions, 36 changer transitions 0/190 dead transitions. [2023-09-01 07:42:02,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 190 transitions, 1349 flow [2023-09-01 07:42:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:42:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:42:02,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1872 transitions. [2023-09-01 07:42:02,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748858447488584 [2023-09-01 07:42:02,266 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1872 transitions. [2023-09-01 07:42:02,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1872 transitions. [2023-09-01 07:42:02,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:42:02,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1872 transitions. [2023-09-01 07:42:02,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:02,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:02,272 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:02,272 INFO L175 Difference]: Start difference. First operand has 91 places, 116 transitions, 744 flow. Second operand 6 states and 1872 transitions. [2023-09-01 07:42:02,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 190 transitions, 1349 flow [2023-09-01 07:42:02,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 190 transitions, 1325 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:42:02,411 INFO L231 Difference]: Finished difference. Result has 96 places, 117 transitions, 834 flow [2023-09-01 07:42:02,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=834, PETRI_PLACES=96, PETRI_TRANSITIONS=117} [2023-09-01 07:42:02,411 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2023-09-01 07:42:02,411 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 117 transitions, 834 flow [2023-09-01 07:42:02,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.2) internal successors, (1471), 5 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:02,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:42:02,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:42:02,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 07:42:02,412 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:42:02,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:42:02,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1453888881, now seen corresponding path program 1 times [2023-09-01 07:42:02,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:42:02,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056056825] [2023-09-01 07:42:02,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:42:02,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:42:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:42:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:42:02,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:42:02,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056056825] [2023-09-01 07:42:02,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056056825] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:42:02,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:42:02,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:42:02,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012197492] [2023-09-01 07:42:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:42:02,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:42:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:42:02,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:42:02,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:42:02,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 657 [2023-09-01 07:42:02,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 834 flow. Second operand has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:02,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:42:02,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 657 [2023-09-01 07:42:02,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:42:34,452 INFO L130 PetriNetUnfolder]: 286096/392161 cut-off events. [2023-09-01 07:42:34,452 INFO L131 PetriNetUnfolder]: For 123986/123986 co-relation queries the response was YES. [2023-09-01 07:42:36,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953750 conditions, 392161 events. 286096/392161 cut-off events. For 123986/123986 co-relation queries the response was YES. Maximal size of possible extension queue 10067. Compared 2880788 event pairs, 145910 based on Foata normal form. 0/313469 useless extension candidates. Maximal degree in co-relation 953719. Up to 262794 conditions per place. [2023-09-01 07:42:37,579 INFO L137 encePairwiseOnDemand]: 653/657 looper letters, 152 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-09-01 07:42:37,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 154 transitions, 1264 flow [2023-09-01 07:42:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:42:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:42:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2023-09-01 07:42:37,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2023-09-01 07:42:37,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2023-09-01 07:42:37,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2023-09-01 07:42:37,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:42:37,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2023-09-01 07:42:37,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:37,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:37,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:37,585 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 834 flow. Second operand 3 states and 1008 transitions. [2023-09-01 07:42:37,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 154 transitions, 1264 flow [2023-09-01 07:42:37,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 1229 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:42:37,927 INFO L231 Difference]: Finished difference. Result has 97 places, 118 transitions, 813 flow [2023-09-01 07:42:37,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=813, PETRI_PLACES=97, PETRI_TRANSITIONS=118} [2023-09-01 07:42:37,927 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2023-09-01 07:42:37,928 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 118 transitions, 813 flow [2023-09-01 07:42:37,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:37,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:42:37,928 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:42:37,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 07:42:37,928 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:42:37,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:42:37,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1164396443, now seen corresponding path program 1 times [2023-09-01 07:42:37,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:42:37,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323008928] [2023-09-01 07:42:37,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:42:37,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:42:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:42:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:42:38,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:42:38,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323008928] [2023-09-01 07:42:38,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323008928] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:42:38,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:42:38,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 07:42:38,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665791736] [2023-09-01 07:42:38,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:42:38,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:42:38,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:42:38,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:42:38,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:42:38,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 657 [2023-09-01 07:42:38,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 118 transitions, 813 flow. Second operand has 5 states, 5 states have (on average 295.2) internal successors, (1476), 5 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:42:38,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:42:38,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 657 [2023-09-01 07:42:38,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:43:27,952 INFO L130 PetriNetUnfolder]: 422610/585329 cut-off events. [2023-09-01 07:43:27,953 INFO L131 PetriNetUnfolder]: For 274407/274407 co-relation queries the response was YES. [2023-09-01 07:43:32,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506877 conditions, 585329 events. 422610/585329 cut-off events. For 274407/274407 co-relation queries the response was YES. Maximal size of possible extension queue 14391. Compared 4589665 event pairs, 268872 based on Foata normal form. 4032/519505 useless extension candidates. Maximal degree in co-relation 1506845. Up to 392149 conditions per place. [2023-09-01 07:43:34,745 INFO L137 encePairwiseOnDemand]: 650/657 looper letters, 243 selfloop transitions, 19 changer transitions 0/262 dead transitions. [2023-09-01 07:43:34,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 262 transitions, 1852 flow [2023-09-01 07:43:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:43:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:43:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2232 transitions. [2023-09-01 07:43:34,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48532289628180036 [2023-09-01 07:43:34,750 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2232 transitions. [2023-09-01 07:43:34,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2232 transitions. [2023-09-01 07:43:34,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:43:34,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2232 transitions. [2023-09-01 07:43:34,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 318.85714285714283) internal successors, (2232), 7 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:34,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:34,758 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:34,759 INFO L175 Difference]: Start difference. First operand has 97 places, 118 transitions, 813 flow. Second operand 7 states and 2232 transitions. [2023-09-01 07:43:34,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 262 transitions, 1852 flow [2023-09-01 07:43:52,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 262 transitions, 1842 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:43:52,843 INFO L231 Difference]: Finished difference. Result has 106 places, 123 transitions, 915 flow [2023-09-01 07:43:52,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=915, PETRI_PLACES=106, PETRI_TRANSITIONS=123} [2023-09-01 07:43:52,844 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2023-09-01 07:43:52,844 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 123 transitions, 915 flow [2023-09-01 07:43:52,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 295.2) internal successors, (1476), 5 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:52,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:43:52,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:43:52,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 07:43:52,845 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:43:52,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:43:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1453888920, now seen corresponding path program 1 times [2023-09-01 07:43:52,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:43:52,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896376811] [2023-09-01 07:43:52,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:43:52,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:43:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:43:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:43:52,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:43:52,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896376811] [2023-09-01 07:43:52,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896376811] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:43:52,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:43:52,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:43:52,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962312390] [2023-09-01 07:43:52,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:43:52,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:43:52,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:43:52,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:43:52,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:43:53,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 657 [2023-09-01 07:43:53,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 123 transitions, 915 flow. Second operand has 4 states, 4 states have (on average 297.75) internal successors, (1191), 4 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:43:53,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:43:53,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 657 [2023-09-01 07:43:53,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:44:45,677 INFO L130 PetriNetUnfolder]: 397470/549477 cut-off events. [2023-09-01 07:44:45,677 INFO L131 PetriNetUnfolder]: For 435108/435108 co-relation queries the response was YES. [2023-09-01 07:44:48,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466458 conditions, 549477 events. 397470/549477 cut-off events. For 435108/435108 co-relation queries the response was YES. Maximal size of possible extension queue 13422. Compared 4217234 event pairs, 292024 based on Foata normal form. 10712/501853 useless extension candidates. Maximal degree in co-relation 1466422. Up to 331509 conditions per place. [2023-09-01 07:44:50,494 INFO L137 encePairwiseOnDemand]: 651/657 looper letters, 195 selfloop transitions, 16 changer transitions 0/211 dead transitions. [2023-09-01 07:44:50,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 211 transitions, 1667 flow [2023-09-01 07:44:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:44:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:44:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1603 transitions. [2023-09-01 07:44:50,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879756468797565 [2023-09-01 07:44:50,497 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1603 transitions. [2023-09-01 07:44:50,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1603 transitions. [2023-09-01 07:44:50,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:44:50,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1603 transitions. [2023-09-01 07:44:50,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.6) internal successors, (1603), 5 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:50,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:50,503 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:44:50,503 INFO L175 Difference]: Start difference. First operand has 106 places, 123 transitions, 915 flow. Second operand 5 states and 1603 transitions. [2023-09-01 07:44:50,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 211 transitions, 1667 flow [2023-09-01 07:45:03,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 211 transitions, 1626 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 07:45:03,720 INFO L231 Difference]: Finished difference. Result has 112 places, 124 transitions, 934 flow [2023-09-01 07:45:03,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=934, PETRI_PLACES=112, PETRI_TRANSITIONS=124} [2023-09-01 07:45:03,721 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2023-09-01 07:45:03,721 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 124 transitions, 934 flow [2023-09-01 07:45:03,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 297.75) internal successors, (1191), 4 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:45:03,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:45:03,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:45:03,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 07:45:03,722 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:45:03,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:45:03,723 INFO L85 PathProgramCache]: Analyzing trace with hash 98528532, now seen corresponding path program 1 times [2023-09-01 07:45:03,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:45:03,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343058147] [2023-09-01 07:45:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:45:03,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:45:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:45:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:45:03,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:45:03,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343058147] [2023-09-01 07:45:03,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343058147] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:45:03,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905738337] [2023-09-01 07:45:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:45:03,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:45:03,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:45:03,822 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) [2023-09-01 07:45:03,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 07:45:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:45:03,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:45:03,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:45:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:45:03,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:45:03,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905738337] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:45:03,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:45:03,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:45:03,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142892638] [2023-09-01 07:45:03,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:45:03,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:45:03,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:45:03,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:45:03,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:45:03,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 657 [2023-09-01 07:45:03,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 124 transitions, 934 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:45:03,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:45:03,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 657 [2023-09-01 07:45:03,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:45:49,639 INFO L130 PetriNetUnfolder]: 335670/463341 cut-off events. [2023-09-01 07:45:49,639 INFO L131 PetriNetUnfolder]: For 479424/479424 co-relation queries the response was YES. [2023-09-01 07:45:52,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226446 conditions, 463341 events. 335670/463341 cut-off events. For 479424/479424 co-relation queries the response was YES. Maximal size of possible extension queue 11219. Compared 3475599 event pairs, 262476 based on Foata normal form. 23376/433633 useless extension candidates. Maximal degree in co-relation 1226408. Up to 463341 conditions per place. [2023-09-01 07:45:53,733 INFO L137 encePairwiseOnDemand]: 654/657 looper letters, 120 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2023-09-01 07:45:53,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 121 transitions, 1151 flow [2023-09-01 07:45:53,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:45:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:45:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 971 transitions. [2023-09-01 07:45:53,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4926433282597666 [2023-09-01 07:45:53,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 971 transitions. [2023-09-01 07:45:53,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 971 transitions. [2023-09-01 07:45:53,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:45:53,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 971 transitions. [2023-09-01 07:45:53,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:45:53,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:45:53,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:45:53,738 INFO L175 Difference]: Start difference. First operand has 112 places, 124 transitions, 934 flow. Second operand 3 states and 971 transitions. [2023-09-01 07:45:53,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 121 transitions, 1151 flow [2023-09-01 07:46:08,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 121 transitions, 1126 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 07:46:08,544 INFO L231 Difference]: Finished difference. Result has 105 places, 121 transitions, 886 flow [2023-09-01 07:46:08,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=886, PETRI_PLACES=105, PETRI_TRANSITIONS=121} [2023-09-01 07:46:08,544 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2023-09-01 07:46:08,544 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 121 transitions, 886 flow [2023-09-01 07:46:08,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:08,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:46:08,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:46:08,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 07:46:08,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:46:08,745 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:46:08,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:46:08,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2065241530, now seen corresponding path program 1 times [2023-09-01 07:46:08,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:46:08,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472981891] [2023-09-01 07:46:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:46:08,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:46:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:46:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:46:08,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:46:08,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472981891] [2023-09-01 07:46:08,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472981891] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:46:08,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125176545] [2023-09-01 07:46:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:46:08,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:46:08,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:46:08,824 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) [2023-09-01 07:46:08,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 07:46:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:46:08,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:46:08,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:46:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:46:08,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:46:08,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125176545] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:46:08,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:46:08,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-09-01 07:46:08,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870055994] [2023-09-01 07:46:08,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:46:08,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:46:08,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:46:08,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:46:08,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:46:09,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 657 [2023-09-01 07:46:09,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 121 transitions, 886 flow. Second operand has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:09,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:46:09,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 657 [2023-09-01 07:46:09,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:46:47,314 INFO L130 PetriNetUnfolder]: 292550/404029 cut-off events. [2023-09-01 07:46:47,315 INFO L131 PetriNetUnfolder]: For 324300/324300 co-relation queries the response was YES. [2023-09-01 07:46:50,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1038762 conditions, 404029 events. 292550/404029 cut-off events. For 324300/324300 co-relation queries the response was YES. Maximal size of possible extension queue 9894. Compared 2991105 event pairs, 226220 based on Foata normal form. 16192/372681 useless extension candidates. Maximal degree in co-relation 1038726. Up to 403982 conditions per place. [2023-09-01 07:46:52,069 INFO L137 encePairwiseOnDemand]: 654/657 looper letters, 96 selfloop transitions, 23 changer transitions 0/119 dead transitions. [2023-09-01 07:46:52,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 119 transitions, 1111 flow [2023-09-01 07:46:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:46:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:46:52,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1268 transitions. [2023-09-01 07:46:52,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824961948249619 [2023-09-01 07:46:52,072 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1268 transitions. [2023-09-01 07:46:52,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1268 transitions. [2023-09-01 07:46:52,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:46:52,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1268 transitions. [2023-09-01 07:46:52,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:52,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:52,078 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:46:52,078 INFO L175 Difference]: Start difference. First operand has 105 places, 121 transitions, 886 flow. Second operand 4 states and 1268 transitions. [2023-09-01 07:46:52,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 119 transitions, 1111 flow [2023-09-01 07:47:01,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 119 transitions, 1035 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:47:01,294 INFO L231 Difference]: Finished difference. Result has 101 places, 119 transitions, 843 flow [2023-09-01 07:47:01,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=843, PETRI_PLACES=101, PETRI_TRANSITIONS=119} [2023-09-01 07:47:01,294 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2023-09-01 07:47:01,295 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 119 transitions, 843 flow [2023-09-01 07:47:01,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:47:01,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:47:01,295 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:47:01,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 07:47:01,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:47:01,496 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:47:01,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:47:01,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1254401823, now seen corresponding path program 1 times [2023-09-01 07:47:01,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:47:01,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028453719] [2023-09-01 07:47:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:47:01,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:47:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:47:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:47:01,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:47:01,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028453719] [2023-09-01 07:47:01,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028453719] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:47:01,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091079498] [2023-09-01 07:47:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:47:01,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:47:01,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:47:01,590 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) [2023-09-01 07:47:01,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 07:47:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:47:01,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:47:01,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:47:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:47:01,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:47:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:47:01,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091079498] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:47:01,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:47:01,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-09-01 07:47:01,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438977245] [2023-09-01 07:47:01,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:47:01,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 07:47:01,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:47:01,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 07:47:01,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-09-01 07:47:02,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 657 [2023-09-01 07:47:02,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 119 transitions, 843 flow. Second operand has 16 states, 16 states have (on average 284.875) internal successors, (4558), 16 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:47:02,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:47:02,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 657 [2023-09-01 07:47:02,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15