./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.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-name-comparator-trans.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 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --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 07:29:30,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:29:30,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:29:30,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:29:30,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:29:30,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:29:30,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:29:30,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:29:30,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:29:30,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:29:30,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:29:30,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:29:30,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:29:30,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:29:30,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:29:30,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:29:30,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:29:30,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:29:30,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:29:30,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:29:30,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:29:30,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:29:30,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:29:30,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:29:30,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:29:30,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:29:30,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:29:30,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:29:30,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:29:30,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:29:30,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:29:30,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:29:30,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:29:30,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:29:30,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:29:30,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:29:30,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:29:30,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:29:30,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:29:30,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:29:30,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:29:30,324 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:29:30,350 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:29:30,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:29:30,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:29:30,352 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:29:30,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:29:30,353 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:29:30,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:29:30,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:29:30,354 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:29:30,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:29:30,355 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:29:30,355 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:29:30,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:29:30,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:29:30,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:29:30,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:29:30,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:29:30,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:29:30,357 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:29:30,357 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:29:30,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:29:30,357 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:29:30,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:29:30,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:29:30,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:29:30,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:29:30,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:29:30,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:29:30,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:29:30,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:29:30,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:29:30,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:29:30,359 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:29:30,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:29:30,360 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:29:30,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:29:30,360 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:29:30,360 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:29:30,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:29:30,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:29:30,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:29:30,710 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:29:30,710 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:29:30,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2023-09-01 07:29:31,929 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:29:32,152 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:29:32,153 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2023-09-01 07:29:32,158 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94b707c3f/8ac1e60fe52b465aa34e32cdd159e2c5/FLAGf5cd20dad [2023-09-01 07:29:32,171 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94b707c3f/8ac1e60fe52b465aa34e32cdd159e2c5 [2023-09-01 07:29:32,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:29:32,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:29:32,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:29:32,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:29:32,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:29:32,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f84ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32, skipping insertion in model container [2023-09-01 07:29:32,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:29:32,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:29:32,386 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-name-comparator-trans.wvr.c[4788,4801] [2023-09-01 07:29:32,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:29:32,417 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:29:32,467 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-name-comparator-trans.wvr.c[4788,4801] [2023-09-01 07:29:32,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:29:32,490 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:29:32,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32 WrapperNode [2023-09-01 07:29:32,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:29:32,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:29:32,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:29:32,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:29:32,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,564 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 366 [2023-09-01 07:29:32,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:29:32,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:29:32,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:29:32,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:29:32,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,621 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:29:32,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:29:32,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:29:32,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:29:32,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32" (1/1) ... [2023-09-01 07:29:32,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:29:32,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:29:32,656 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 07:29:32,671 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 07:29:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:29:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:29:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:29:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:29:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:29:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:29:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:29:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:29:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:29:32,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:29:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:29:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:29:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:29:32,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:29:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:29:32,702 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 07:29:32,798 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:29:32,800 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:29:33,327 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:29:33,340 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:29:33,340 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 07:29:33,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:29:33 BoogieIcfgContainer [2023-09-01 07:29:33,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:29:33,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:29:33,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:29:33,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:29:33,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:29:32" (1/3) ... [2023-09-01 07:29:33,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12aee0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:29:33, skipping insertion in model container [2023-09-01 07:29:33,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:29:32" (2/3) ... [2023-09-01 07:29:33,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12aee0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:29:33, skipping insertion in model container [2023-09-01 07:29:33,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:29:33" (3/3) ... [2023-09-01 07:29:33,350 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2023-09-01 07:29:33,356 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:29:33,364 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:29:33,364 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-09-01 07:29:33,364 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:29:33,517 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 07:29:33,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 440 transitions, 904 flow [2023-09-01 07:29:33,712 INFO L130 PetriNetUnfolder]: 32/437 cut-off events. [2023-09-01 07:29:33,715 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:29:33,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 437 events. 32/437 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1255 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 324. Up to 2 conditions per place. [2023-09-01 07:29:33,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 418 places, 440 transitions, 904 flow [2023-09-01 07:29:33,743 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 419 transitions, 853 flow [2023-09-01 07:29:33,749 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:29:33,771 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 398 places, 419 transitions, 853 flow [2023-09-01 07:29:33,773 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 398 places, 419 transitions, 853 flow [2023-09-01 07:29:33,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 419 transitions, 853 flow [2023-09-01 07:29:33,877 INFO L130 PetriNetUnfolder]: 31/419 cut-off events. [2023-09-01 07:29:33,877 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:29:33,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 419 events. 31/419 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 324. Up to 2 conditions per place. [2023-09-01 07:29:33,904 INFO L119 LiptonReduction]: Number of co-enabled transitions 53934 [2023-09-01 07:29:53,050 INFO L134 LiptonReduction]: Checked pairs total: 50359 [2023-09-01 07:29:53,051 INFO L136 LiptonReduction]: Total number of compositions: 535 [2023-09-01 07:29:53,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:29:53,082 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;@3158bbee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:29:53,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-09-01 07:29:53,087 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-09-01 07:29:53,087 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:29:53,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:29:53,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:29:53,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:29:53,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:29:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash 58799, now seen corresponding path program 1 times [2023-09-01 07:29:53,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:29:53,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428848348] [2023-09-01 07:29:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:29:53,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:29:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:29:53,539 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 07:29:53,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:29:53,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428848348] [2023-09-01 07:29:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428848348] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:29:53,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:29:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:29:53,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338875648] [2023-09-01 07:29:53,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:29:53,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:29:53,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:29:53,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:29:53,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:29:53,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 975 [2023-09-01 07:29:53,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 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 07:29:53,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:29:53,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 975 [2023-09-01 07:29:53,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:29:54,993 INFO L130 PetriNetUnfolder]: 6211/8841 cut-off events. [2023-09-01 07:29:54,993 INFO L131 PetriNetUnfolder]: For 444/444 co-relation queries the response was YES. [2023-09-01 07:29:55,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 8841 events. 6211/8841 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 46399 event pairs, 5306 based on Foata normal form. 0/3413 useless extension candidates. Maximal degree in co-relation 8144. Up to 4423 conditions per place. [2023-09-01 07:29:55,046 INFO L137 encePairwiseOnDemand]: 962/975 looper letters, 73 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-09-01 07:29:55,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 75 transitions, 330 flow [2023-09-01 07:29:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:29:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:29:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1328 transitions. [2023-09-01 07:29:55,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454017094017094 [2023-09-01 07:29:55,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1328 transitions. [2023-09-01 07:29:55,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1328 transitions. [2023-09-01 07:29:55,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:29:55,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1328 transitions. [2023-09-01 07:29:55,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 442.6666666666667) internal successors, (1328), 3 states have internal predecessors, (1328), 0 states have call successors, (0), 0 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 07:29:55,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:29:55,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:29:55,088 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 1328 transitions. [2023-09-01 07:29:55,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 75 transitions, 330 flow [2023-09-01 07:29:55,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 75 transitions, 312 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:29:55,106 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 98 flow [2023-09-01 07:29:55,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-09-01 07:29:55,111 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-09-01 07:29:55,111 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 98 flow [2023-09-01 07:29:55,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 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 07:29:55,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:29:55,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:29:55,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:29:55,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:29:55,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:29:55,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1824464, now seen corresponding path program 1 times [2023-09-01 07:29:55,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:29:55,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710642482] [2023-09-01 07:29:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:29:55,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:29:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:29:55,210 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 07:29:55,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:29:55,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710642482] [2023-09-01 07:29:55,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710642482] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:29:55,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285941911] [2023-09-01 07:29:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:29:55,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:29:55,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:29:55,215 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 07:29:55,221 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 07:29:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:29:55,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:29:55,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:29:55,390 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 07:29:55,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:29:55,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285941911] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:29:55,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:29:55,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 07:29:55,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544794896] [2023-09-01 07:29:55,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:29:55,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:29:55,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:29:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:29:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:29:55,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 975 [2023-09-01 07:29:55,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 411.75) internal successors, (1647), 4 states have internal predecessors, (1647), 0 states have call successors, (0), 0 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 07:29:55,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:29:55,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 975 [2023-09-01 07:29:55,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:29:56,822 INFO L130 PetriNetUnfolder]: 6211/8840 cut-off events. [2023-09-01 07:29:56,823 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-09-01 07:29:56,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17963 conditions, 8840 events. 6211/8840 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 46916 event pairs, 5306 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 8979. Up to 4421 conditions per place. [2023-09-01 07:29:56,873 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 72 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-09-01 07:29:56,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 318 flow [2023-09-01 07:29:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:29:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:29:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1719 transitions. [2023-09-01 07:29:56,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44076923076923075 [2023-09-01 07:29:56,879 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1719 transitions. [2023-09-01 07:29:56,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1719 transitions. [2023-09-01 07:29:56,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:29:56,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1719 transitions. [2023-09-01 07:29:56,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 429.75) internal successors, (1719), 4 states have internal predecessors, (1719), 0 states have call successors, (0), 0 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 07:29:56,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 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 07:29:56,893 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 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 07:29:56,893 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 98 flow. Second operand 4 states and 1719 transitions. [2023-09-01 07:29:56,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 318 flow [2023-09-01 07:29:56,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:29:56,896 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 96 flow [2023-09-01 07:29:56,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-09-01 07:29:56,898 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-09-01 07:29:56,899 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 96 flow [2023-09-01 07:29:56,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 411.75) internal successors, (1647), 4 states have internal predecessors, (1647), 0 states have call successors, (0), 0 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 07:29:56,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:29:56,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:29:56,909 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 07:29:57,105 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 07:29:57,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:29:57,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:29:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1824466, now seen corresponding path program 1 times [2023-09-01 07:29:57,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:29:57,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977630019] [2023-09-01 07:29:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:29:57,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:29:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:29:57,155 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 07:29:57,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:29:57,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977630019] [2023-09-01 07:29:57,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977630019] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:29:57,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054078358] [2023-09-01 07:29:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:29:57,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:29:57,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:29:57,158 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 07:29:57,161 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 07:29:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:29:57,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:29:57,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:29:57,275 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 07:29:57,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:29:57,295 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 07:29:57,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054078358] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:29:57,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:29:57,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:29:57,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883186771] [2023-09-01 07:29:57,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:29:57,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:29:57,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:29:57,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:29:57,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:29:57,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 975 [2023-09-01 07:29:57,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 412.14285714285717) internal successors, (2885), 7 states have internal predecessors, (2885), 0 states have call successors, (0), 0 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 07:29:57,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:29:57,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 975 [2023-09-01 07:29:57,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:00,067 INFO L130 PetriNetUnfolder]: 15526/22097 cut-off events. [2023-09-01 07:30:00,068 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-09-01 07:30:00,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44892 conditions, 22097 events. 15526/22097 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 132129 event pairs, 13265 based on Foata normal form. 0/8536 useless extension candidates. Maximal degree in co-relation 35907. Up to 4422 conditions per place. [2023-09-01 07:30:00,197 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 177 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2023-09-01 07:30:00,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 182 transitions, 776 flow [2023-09-01 07:30:00,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:30:00,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:30:00,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2651 transitions. [2023-09-01 07:30:00,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45316239316239315 [2023-09-01 07:30:00,206 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2651 transitions. [2023-09-01 07:30:00,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2651 transitions. [2023-09-01 07:30:00,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:00,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2651 transitions. [2023-09-01 07:30:00,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 441.8333333333333) internal successors, (2651), 6 states have internal predecessors, (2651), 0 states have call successors, (0), 0 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 07:30:00,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 975.0) internal successors, (6825), 7 states have internal predecessors, (6825), 0 states have call successors, (0), 0 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 07:30:00,226 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 975.0) internal successors, (6825), 7 states have internal predecessors, (6825), 0 states have call successors, (0), 0 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 07:30:00,226 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 96 flow. Second operand 6 states and 2651 transitions. [2023-09-01 07:30:00,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 182 transitions, 776 flow [2023-09-01 07:30:00,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 182 transitions, 773 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:30:00,231 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 129 flow [2023-09-01 07:30:00,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-09-01 07:30:00,232 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-09-01 07:30:00,233 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 129 flow [2023-09-01 07:30:00,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 412.14285714285717) internal successors, (2885), 7 states have internal predecessors, (2885), 0 states have call successors, (0), 0 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 07:30:00,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:00,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 07:30:00,247 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 07:30:00,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 07:30:00,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:00,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:00,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1751412444, now seen corresponding path program 1 times [2023-09-01 07:30:00,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:00,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960631002] [2023-09-01 07:30:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:00,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:00,551 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 07:30:00,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:00,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960631002] [2023-09-01 07:30:00,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960631002] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:00,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:30:00,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:30:00,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117188923] [2023-09-01 07:30:00,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:00,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:30:00,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:00,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:30:00,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:30:00,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-09-01 07:30:00,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 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 07:30:00,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:00,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-09-01 07:30:00,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:02,227 INFO L130 PetriNetUnfolder]: 12421/17679 cut-off events. [2023-09-01 07:30:02,227 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2023-09-01 07:30:02,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35933 conditions, 17679 events. 12421/17679 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 103390 event pairs, 10612 based on Foata normal form. 1/6832 useless extension candidates. Maximal degree in co-relation 35917. Up to 17679 conditions per place. [2023-09-01 07:30:02,309 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 40 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-09-01 07:30:02,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 213 flow [2023-09-01 07:30:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:30:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:30:02,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1270 transitions. [2023-09-01 07:30:02,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341880341880342 [2023-09-01 07:30:02,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1270 transitions. [2023-09-01 07:30:02,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1270 transitions. [2023-09-01 07:30:02,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:02,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1270 transitions. [2023-09-01 07:30:02,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 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 07:30:02,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:02,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:02,325 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 129 flow. Second operand 3 states and 1270 transitions. [2023-09-01 07:30:02,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 213 flow [2023-09-01 07:30:02,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 203 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-09-01 07:30:02,328 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 127 flow [2023-09-01 07:30:02,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-09-01 07:30:02,330 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-09-01 07:30:02,330 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 127 flow [2023-09-01 07:30:02,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 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 07:30:02,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:02,331 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:30:02,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:30:02,332 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:02,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:02,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1480223121, now seen corresponding path program 2 times [2023-09-01 07:30:02,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:02,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045350606] [2023-09-01 07:30:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:02,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:30:02,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:02,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045350606] [2023-09-01 07:30:02,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045350606] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:30:02,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143710860] [2023-09-01 07:30:02,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:30:02,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:30:02,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:30:02,465 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 07:30:02,490 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 07:30:02,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:30:02,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:30:02,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:30:02,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:30:02,584 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 07:30:02,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:30:02,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143710860] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:02,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:30:02,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:30:02,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565565657] [2023-09-01 07:30:02,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:02,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:30:02,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:02,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:30:02,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:30:02,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-09-01 07:30:02,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 0 states have call successors, (0), 0 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 07:30:02,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:02,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-09-01 07:30:02,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:04,417 INFO L130 PetriNetUnfolder]: 12421/17678 cut-off events. [2023-09-01 07:30:04,417 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2023-09-01 07:30:04,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35931 conditions, 17678 events. 12421/17678 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 103395 event pairs, 10612 based on Foata normal form. 1/6831 useless extension candidates. Maximal degree in co-relation 35912. Up to 17678 conditions per place. [2023-09-01 07:30:04,499 INFO L137 encePairwiseOnDemand]: 973/975 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-09-01 07:30:04,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 41 transitions, 199 flow [2023-09-01 07:30:04,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:30:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:30:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1274 transitions. [2023-09-01 07:30:04,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43555555555555553 [2023-09-01 07:30:04,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1274 transitions. [2023-09-01 07:30:04,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1274 transitions. [2023-09-01 07:30:04,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:04,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1274 transitions. [2023-09-01 07:30:04,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 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 07:30:04,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:04,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:04,513 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 127 flow. Second operand 3 states and 1274 transitions. [2023-09-01 07:30:04,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 41 transitions, 199 flow [2023-09-01 07:30:04,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 185 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-09-01 07:30:04,515 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 105 flow [2023-09-01 07:30:04,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-09-01 07:30:04,516 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-09-01 07:30:04,516 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 105 flow [2023-09-01 07:30:04,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 0 states have call successors, (0), 0 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 07:30:04,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:04,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:30:04,525 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 07:30:04,722 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 07:30:04,722 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:04,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:04,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1482176863, now seen corresponding path program 1 times [2023-09-01 07:30:04,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:04,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820227707] [2023-09-01 07:30:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:04,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:04,784 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 07:30:04,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:04,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820227707] [2023-09-01 07:30:04,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820227707] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:30:04,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673249062] [2023-09-01 07:30:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:04,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:30:04,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:30:04,787 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 07:30:04,817 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 07:30:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:04,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:30:04,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:30:04,939 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 07:30:04,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:30:04,954 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 07:30:04,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673249062] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:30:04,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:30:04,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 07:30:04,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304070915] [2023-09-01 07:30:04,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:30:04,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:30:04,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:04,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:30:04,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:30:05,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 975 [2023-09-01 07:30:05,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 409.7142857142857) internal successors, (2868), 7 states have internal predecessors, (2868), 0 states have call successors, (0), 0 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 07:30:05,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:05,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 975 [2023-09-01 07:30:05,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:06,012 INFO L130 PetriNetUnfolder]: 6211/8842 cut-off events. [2023-09-01 07:30:06,012 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-09-01 07:30:06,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17973 conditions, 8842 events. 6211/8842 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 47095 event pairs, 5306 based on Foata normal form. 2/3420 useless extension candidates. Maximal degree in co-relation 17964. Up to 8840 conditions per place. [2023-09-01 07:30:06,040 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 37 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-09-01 07:30:06,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 187 flow [2023-09-01 07:30:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:30:06,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:30:06,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2082 transitions. [2023-09-01 07:30:06,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270769230769231 [2023-09-01 07:30:06,047 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2082 transitions. [2023-09-01 07:30:06,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2082 transitions. [2023-09-01 07:30:06,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:06,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2082 transitions. [2023-09-01 07:30:06,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 416.4) internal successors, (2082), 5 states have internal predecessors, (2082), 0 states have call successors, (0), 0 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 07:30:06,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 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 07:30:06,060 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 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 07:30:06,060 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 105 flow. Second operand 5 states and 2082 transitions. [2023-09-01 07:30:06,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 187 flow [2023-09-01 07:30:06,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 182 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 07:30:06,062 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 116 flow [2023-09-01 07:30:06,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-09-01 07:30:06,063 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-09-01 07:30:06,063 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 116 flow [2023-09-01 07:30:06,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 409.7142857142857) internal successors, (2868), 7 states have internal predecessors, (2868), 0 states have call successors, (0), 0 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 07:30:06,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:06,065 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-09-01 07:30:06,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 07:30:06,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:30:06,271 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:06,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:06,272 INFO L85 PathProgramCache]: Analyzing trace with hash -862143743, now seen corresponding path program 2 times [2023-09-01 07:30:06,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:06,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578754253] [2023-09-01 07:30:06,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:06,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:06,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578754253] [2023-09-01 07:30:06,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578754253] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:06,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:30:06,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:30:06,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849506312] [2023-09-01 07:30:06,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:06,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:30:06,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:06,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:30:06,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:30:06,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-09-01 07:30:06,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 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 07:30:06,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:06,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-09-01 07:30:06,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:06,992 INFO L130 PetriNetUnfolder]: 4823/6878 cut-off events. [2023-09-01 07:30:06,992 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-09-01 07:30:07,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13993 conditions, 6878 events. 4823/6878 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 35106 event pairs, 4054 based on Foata normal form. 0/2810 useless extension candidates. Maximal degree in co-relation 13981. Up to 6878 conditions per place. [2023-09-01 07:30:07,024 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-09-01 07:30:07,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 190 flow [2023-09-01 07:30:07,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:30:07,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:30:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1273 transitions. [2023-09-01 07:30:07,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4352136752136752 [2023-09-01 07:30:07,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1273 transitions. [2023-09-01 07:30:07,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1273 transitions. [2023-09-01 07:30:07,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:07,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1273 transitions. [2023-09-01 07:30:07,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 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 07:30:07,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:07,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:07,037 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 116 flow. Second operand 3 states and 1273 transitions. [2023-09-01 07:30:07,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 190 flow [2023-09-01 07:30:07,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 39 transitions, 182 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 07:30:07,039 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 106 flow [2023-09-01 07:30:07,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-09-01 07:30:07,039 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-09-01 07:30:07,040 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 106 flow [2023-09-01 07:30:07,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 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 07:30:07,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:07,040 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-09-01 07:30:07,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 07:30:07,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:07,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:07,041 INFO L85 PathProgramCache]: Analyzing trace with hash -862143740, now seen corresponding path program 1 times [2023-09-01 07:30:07,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:07,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026495922] [2023-09-01 07:30:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:07,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:07,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:07,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026495922] [2023-09-01 07:30:07,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026495922] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:07,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:30:07,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:30:07,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4148234] [2023-09-01 07:30:07,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:07,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:30:07,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:07,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:30:07,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:30:07,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-09-01 07:30:07,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 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 07:30:07,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:07,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-09-01 07:30:07,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:08,244 INFO L130 PetriNetUnfolder]: 6543/9366 cut-off events. [2023-09-01 07:30:08,245 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-09-01 07:30:08,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19026 conditions, 9366 events. 6543/9366 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 51379 event pairs, 4054 based on Foata normal form. 0/3994 useless extension candidates. Maximal degree in co-relation 19014. Up to 6879 conditions per place. [2023-09-01 07:30:08,268 INFO L137 encePairwiseOnDemand]: 969/975 looper letters, 63 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-09-01 07:30:08,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 293 flow [2023-09-01 07:30:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:30:08,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:30:08,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1295 transitions. [2023-09-01 07:30:08,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427350427350427 [2023-09-01 07:30:08,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1295 transitions. [2023-09-01 07:30:08,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1295 transitions. [2023-09-01 07:30:08,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:08,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1295 transitions. [2023-09-01 07:30:08,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 431.6666666666667) internal successors, (1295), 3 states have internal predecessors, (1295), 0 states have call successors, (0), 0 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 07:30:08,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:08,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:08,279 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 106 flow. Second operand 3 states and 1295 transitions. [2023-09-01 07:30:08,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 293 flow [2023-09-01 07:30:08,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:30:08,281 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 123 flow [2023-09-01 07:30:08,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-09-01 07:30:08,281 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-09-01 07:30:08,282 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 123 flow [2023-09-01 07:30:08,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 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 07:30:08,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:08,282 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-09-01 07:30:08,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 07:30:08,283 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:08,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash -956650431, now seen corresponding path program 1 times [2023-09-01 07:30:08,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:08,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568337533] [2023-09-01 07:30:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:08,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:08,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:08,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568337533] [2023-09-01 07:30:08,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568337533] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:08,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:30:08,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:30:08,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883047058] [2023-09-01 07:30:08,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:08,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:30:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:08,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:30:08,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:30:08,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-09-01 07:30:08,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 412.3333333333333) internal successors, (1237), 3 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:30:08,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:08,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-09-01 07:30:08,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:09,122 INFO L130 PetriNetUnfolder]: 5923/8490 cut-off events. [2023-09-01 07:30:09,122 INFO L131 PetriNetUnfolder]: For 1444/1444 co-relation queries the response was YES. [2023-09-01 07:30:09,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19037 conditions, 8490 events. 5923/8490 cut-off events. For 1444/1444 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 44694 event pairs, 5026 based on Foata normal form. 0/4234 useless extension candidates. Maximal degree in co-relation 19024. Up to 8490 conditions per place. [2023-09-01 07:30:09,164 INFO L137 encePairwiseOnDemand]: 973/975 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-09-01 07:30:09,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 197 flow [2023-09-01 07:30:09,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:30:09,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:30:09,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1265 transitions. [2023-09-01 07:30:09,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324786324786325 [2023-09-01 07:30:09,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1265 transitions. [2023-09-01 07:30:09,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1265 transitions. [2023-09-01 07:30:09,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:09,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1265 transitions. [2023-09-01 07:30:09,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.6666666666667) internal successors, (1265), 3 states have internal predecessors, (1265), 0 states have call successors, (0), 0 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 07:30:09,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:09,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:09,175 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 123 flow. Second operand 3 states and 1265 transitions. [2023-09-01 07:30:09,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 197 flow [2023-09-01 07:30:09,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:30:09,178 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 119 flow [2023-09-01 07:30:09,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-09-01 07:30:09,178 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-09-01 07:30:09,179 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 119 flow [2023-09-01 07:30:09,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.3333333333333) internal successors, (1237), 3 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:30:09,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:09,179 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-09-01 07:30:09,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 07:30:09,180 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:09,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:09,180 INFO L85 PathProgramCache]: Analyzing trace with hash -956650378, now seen corresponding path program 1 times [2023-09-01 07:30:09,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:09,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200335254] [2023-09-01 07:30:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:09,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:09,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:09,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200335254] [2023-09-01 07:30:09,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200335254] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:30:09,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446662726] [2023-09-01 07:30:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:09,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:30:09,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:30:09,253 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 07:30:09,255 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 07:30:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:09,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:30:09,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:30:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 07:30:09,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:30:09,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446662726] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:09,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:30:09,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-09-01 07:30:09,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930852841] [2023-09-01 07:30:09,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:09,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:30:09,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:09,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:30:09,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:30:09,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-09-01 07:30:09,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 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 07:30:09,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:09,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-09-01 07:30:09,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:10,014 INFO L130 PetriNetUnfolder]: 4693/6744 cut-off events. [2023-09-01 07:30:10,014 INFO L131 PetriNetUnfolder]: For 822/822 co-relation queries the response was YES. [2023-09-01 07:30:10,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14864 conditions, 6744 events. 4693/6744 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 34195 event pairs, 3924 based on Foata normal form. 0/3588 useless extension candidates. Maximal degree in co-relation 14850. Up to 6744 conditions per place. [2023-09-01 07:30:10,041 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 36 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-09-01 07:30:10,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 37 transitions, 187 flow [2023-09-01 07:30:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:30:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:30:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1270 transitions. [2023-09-01 07:30:10,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341880341880342 [2023-09-01 07:30:10,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1270 transitions. [2023-09-01 07:30:10,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1270 transitions. [2023-09-01 07:30:10,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:10,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1270 transitions. [2023-09-01 07:30:10,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 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 07:30:10,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:10,052 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:10,052 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 119 flow. Second operand 3 states and 1270 transitions. [2023-09-01 07:30:10,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 37 transitions, 187 flow [2023-09-01 07:30:10,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 37 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:30:10,055 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 114 flow [2023-09-01 07:30:10,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-09-01 07:30:10,057 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-09-01 07:30:10,057 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 114 flow [2023-09-01 07:30:10,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 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 07:30:10,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:10,058 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-09-01 07:30:10,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:30:10,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 07:30:10,263 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:10,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:10,264 INFO L85 PathProgramCache]: Analyzing trace with hash -956650376, now seen corresponding path program 1 times [2023-09-01 07:30:10,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:10,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506948342] [2023-09-01 07:30:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:10,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:10,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506948342] [2023-09-01 07:30:10,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506948342] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:30:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014733896] [2023-09-01 07:30:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:10,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:30:10,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:30:10,347 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 07:30:10,350 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 07:30:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:10,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:30:10,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:30:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 07:30:10,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:30:10,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014733896] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:10,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:30:10,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-09-01 07:30:10,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101419786] [2023-09-01 07:30:10,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:10,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:30:10,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:10,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:30:10,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:30:10,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-09-01 07:30:10,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 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 07:30:10,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:10,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-09-01 07:30:10,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:11,020 INFO L130 PetriNetUnfolder]: 3563/5138 cut-off events. [2023-09-01 07:30:11,021 INFO L131 PetriNetUnfolder]: For 706/706 co-relation queries the response was YES. [2023-09-01 07:30:11,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11243 conditions, 5138 events. 3563/5138 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 24764 event pairs, 2918 based on Foata normal form. 0/2950 useless extension candidates. Maximal degree in co-relation 11228. Up to 5138 conditions per place. [2023-09-01 07:30:11,036 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-09-01 07:30:11,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 35 transitions, 178 flow [2023-09-01 07:30:11,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:30:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:30:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1268 transitions. [2023-09-01 07:30:11,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335042735042735 [2023-09-01 07:30:11,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1268 transitions. [2023-09-01 07:30:11,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1268 transitions. [2023-09-01 07:30:11,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:11,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1268 transitions. [2023-09-01 07:30:11,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.6666666666667) internal successors, (1268), 3 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 07:30:11,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:11,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:11,047 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 114 flow. Second operand 3 states and 1268 transitions. [2023-09-01 07:30:11,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 35 transitions, 178 flow [2023-09-01 07:30:11,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:30:11,049 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 109 flow [2023-09-01 07:30:11,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-09-01 07:30:11,050 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-09-01 07:30:11,050 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 109 flow [2023-09-01 07:30:11,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 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 07:30:11,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:11,050 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-09-01 07:30:11,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 07:30:11,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:30:11,256 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:11,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:11,256 INFO L85 PathProgramCache]: Analyzing trace with hash -956650375, now seen corresponding path program 1 times [2023-09-01 07:30:11,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:11,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564973463] [2023-09-01 07:30:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:11,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:11,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:11,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564973463] [2023-09-01 07:30:11,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564973463] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:30:11,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029372233] [2023-09-01 07:30:11,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:11,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:30:11,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:30:11,354 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 07:30:11,366 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 07:30:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:11,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:30:11,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:30:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:11,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:30:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:11,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029372233] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:30:11,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:30:11,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-09-01 07:30:11,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015578521] [2023-09-01 07:30:11,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:30:11,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 07:30:11,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:11,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 07:30:11,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:30:11,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-09-01 07:30:11,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 07:30:11,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:11,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-09-01 07:30:11,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:12,521 INFO L130 PetriNetUnfolder]: 6179/8930 cut-off events. [2023-09-01 07:30:12,521 INFO L131 PetriNetUnfolder]: For 454/454 co-relation queries the response was YES. [2023-09-01 07:30:12,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19324 conditions, 8930 events. 6179/8930 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 49607 event pairs, 1778 based on Foata normal form. 0/5246 useless extension candidates. Maximal degree in co-relation 19308. Up to 3243 conditions per place. [2023-09-01 07:30:12,560 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 102 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2023-09-01 07:30:12,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 106 transitions, 482 flow [2023-09-01 07:30:12,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:30:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:30:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2154 transitions. [2023-09-01 07:30:12,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44184615384615383 [2023-09-01 07:30:12,565 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2154 transitions. [2023-09-01 07:30:12,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2154 transitions. [2023-09-01 07:30:12,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:12,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2154 transitions. [2023-09-01 07:30:12,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 430.8) internal successors, (2154), 5 states have internal predecessors, (2154), 0 states have call successors, (0), 0 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 07:30:12,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 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 07:30:12,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 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 07:30:12,574 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 109 flow. Second operand 5 states and 2154 transitions. [2023-09-01 07:30:12,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 106 transitions, 482 flow [2023-09-01 07:30:12,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 106 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:30:12,577 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 134 flow [2023-09-01 07:30:12,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-09-01 07:30:12,578 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-09-01 07:30:12,578 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 134 flow [2023-09-01 07:30:12,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 07:30:12,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:12,578 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:30:12,589 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 07:30:12,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:30:12,784 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:12,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:12,785 INFO L85 PathProgramCache]: Analyzing trace with hash 411238806, now seen corresponding path program 1 times [2023-09-01 07:30:12,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:12,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441400381] [2023-09-01 07:30:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:12,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:12,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:12,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441400381] [2023-09-01 07:30:12,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441400381] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:12,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:30:12,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:30:12,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218467483] [2023-09-01 07:30:12,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:12,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:30:12,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:12,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:30:12,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:30:12,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-09-01 07:30:12,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 0 states have call successors, (0), 0 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 07:30:12,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:12,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-09-01 07:30:12,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:13,524 INFO L130 PetriNetUnfolder]: 4499/6522 cut-off events. [2023-09-01 07:30:13,524 INFO L131 PetriNetUnfolder]: For 3888/3888 co-relation queries the response was YES. [2023-09-01 07:30:13,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15454 conditions, 6522 events. 4499/6522 cut-off events. For 3888/3888 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 32558 event pairs, 3682 based on Foata normal form. 0/4210 useless extension candidates. Maximal degree in co-relation 15436. Up to 6522 conditions per place. [2023-09-01 07:30:13,544 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-09-01 07:30:13,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 35 transitions, 200 flow [2023-09-01 07:30:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:30:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:30:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1266 transitions. [2023-09-01 07:30:13,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328205128205128 [2023-09-01 07:30:13,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1266 transitions. [2023-09-01 07:30:13,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1266 transitions. [2023-09-01 07:30:13,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:13,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1266 transitions. [2023-09-01 07:30:13,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 0 states have call successors, (0), 0 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 07:30:13,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:13,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:13,553 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 134 flow. Second operand 3 states and 1266 transitions. [2023-09-01 07:30:13,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 35 transitions, 200 flow [2023-09-01 07:30:13,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 35 transitions, 194 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 07:30:13,556 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 126 flow [2023-09-01 07:30:13,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2023-09-01 07:30:13,557 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-09-01 07:30:13,557 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 126 flow [2023-09-01 07:30:13,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 0 states have call successors, (0), 0 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 07:30:13,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:13,557 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:30:13,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 07:30:13,557 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:13,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash 411238849, now seen corresponding path program 1 times [2023-09-01 07:30:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:13,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668591600] [2023-09-01 07:30:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:13,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:13,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:13,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668591600] [2023-09-01 07:30:13,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668591600] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:13,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:30:13,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:30:13,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063568929] [2023-09-01 07:30:13,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:13,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:30:13,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:13,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:30:13,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:30:13,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-09-01 07:30:13,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:30:13,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:13,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-09-01 07:30:13,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:14,584 INFO L130 PetriNetUnfolder]: 6339/9210 cut-off events. [2023-09-01 07:30:14,584 INFO L131 PetriNetUnfolder]: For 3938/3938 co-relation queries the response was YES. [2023-09-01 07:30:14,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21152 conditions, 9210 events. 6339/9210 cut-off events. For 3938/3938 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 50420 event pairs, 3682 based on Foata normal form. 0/6010 useless extension candidates. Maximal degree in co-relation 21132. Up to 6523 conditions per place. [2023-09-01 07:30:14,623 INFO L137 encePairwiseOnDemand]: 971/975 looper letters, 55 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-09-01 07:30:14,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 312 flow [2023-09-01 07:30:14,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:30:14,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:30:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1279 transitions. [2023-09-01 07:30:14,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4372649572649573 [2023-09-01 07:30:14,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1279 transitions. [2023-09-01 07:30:14,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1279 transitions. [2023-09-01 07:30:14,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:14,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1279 transitions. [2023-09-01 07:30:14,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 426.3333333333333) internal successors, (1279), 3 states have internal predecessors, (1279), 0 states have call successors, (0), 0 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 07:30:14,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:14,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:14,632 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 126 flow. Second operand 3 states and 1279 transitions. [2023-09-01 07:30:14,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 312 flow [2023-09-01 07:30:14,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:30:14,636 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 139 flow [2023-09-01 07:30:14,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-09-01 07:30:14,636 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-09-01 07:30:14,636 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 139 flow [2023-09-01 07:30:14,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:30:14,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:14,637 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-09-01 07:30:14,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 07:30:14,637 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:14,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:14,638 INFO L85 PathProgramCache]: Analyzing trace with hash -218007335, now seen corresponding path program 2 times [2023-09-01 07:30:14,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:14,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120008706] [2023-09-01 07:30:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:14,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-09-01 07:30:14,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:14,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120008706] [2023-09-01 07:30:14,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120008706] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:14,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:30:14,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:30:14,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8060298] [2023-09-01 07:30:14,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:14,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:30:14,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:30:14,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:30:14,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-09-01 07:30:14,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 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 07:30:14,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:14,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-09-01 07:30:14,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:15,608 INFO L130 PetriNetUnfolder]: 4973/7248 cut-off events. [2023-09-01 07:30:15,608 INFO L131 PetriNetUnfolder]: For 4728/4728 co-relation queries the response was YES. [2023-09-01 07:30:15,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 7248 events. 4973/7248 cut-off events. For 4728/4728 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 36908 event pairs, 4108 based on Foata normal form. 172/5640 useless extension candidates. Maximal degree in co-relation 18102. Up to 7248 conditions per place. [2023-09-01 07:30:15,632 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-09-01 07:30:15,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 34 transitions, 197 flow [2023-09-01 07:30:15,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:30:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:30:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1264 transitions. [2023-09-01 07:30:15,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4321367521367521 [2023-09-01 07:30:15,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1264 transitions. [2023-09-01 07:30:15,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1264 transitions. [2023-09-01 07:30:15,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:15,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1264 transitions. [2023-09-01 07:30:15,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 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 07:30:15,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:15,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:15,639 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 139 flow. Second operand 3 states and 1264 transitions. [2023-09-01 07:30:15,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 34 transitions, 197 flow [2023-09-01 07:30:15,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 34 transitions, 187 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-09-01 07:30:15,643 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 121 flow [2023-09-01 07:30:15,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2023-09-01 07:30:15,644 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-09-01 07:30:15,644 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 121 flow [2023-09-01 07:30:15,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 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 07:30:15,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:15,644 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:30:15,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 07:30:15,645 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:15,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash -136496192, now seen corresponding path program 1 times [2023-09-01 07:30:15,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:15,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717567073] [2023-09-01 07:30:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:15,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:15,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:15,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717567073] [2023-09-01 07:30:15,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717567073] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:30:15,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668407671] [2023-09-01 07:30:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:15,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:30:15,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:30:15,702 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 07:30:15,704 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 07:30:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:15,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:30:15,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:30:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 07:30:15,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:30:15,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668407671] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:15,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:30:15,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-09-01 07:30:15,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355307184] [2023-09-01 07:30:15,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:15,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:30:15,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:30:15,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:30:15,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-09-01 07:30:15,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 415.0) internal successors, (1245), 3 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 07:30:15,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:15,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-09-01 07:30:15,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:16,486 INFO L130 PetriNetUnfolder]: 3527/5162 cut-off events. [2023-09-01 07:30:16,486 INFO L131 PetriNetUnfolder]: For 1354/1354 co-relation queries the response was YES. [2023-09-01 07:30:16,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12185 conditions, 5162 events. 3527/5162 cut-off events. For 1354/1354 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24842 event pairs, 2814 based on Foata normal form. 0/4230 useless extension candidates. Maximal degree in co-relation 12166. Up to 5162 conditions per place. [2023-09-01 07:30:16,502 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-09-01 07:30:16,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 32 transitions, 179 flow [2023-09-01 07:30:16,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:30:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:30:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1262 transitions. [2023-09-01 07:30:16,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43145299145299143 [2023-09-01 07:30:16,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1262 transitions. [2023-09-01 07:30:16,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1262 transitions. [2023-09-01 07:30:16,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:16,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1262 transitions. [2023-09-01 07:30:16,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 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 07:30:16,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:16,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:16,508 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 121 flow. Second operand 3 states and 1262 transitions. [2023-09-01 07:30:16,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 32 transitions, 179 flow [2023-09-01 07:30:16,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 32 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:30:16,510 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 116 flow [2023-09-01 07:30:16,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2023-09-01 07:30:16,510 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-09-01 07:30:16,510 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 116 flow [2023-09-01 07:30:16,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 415.0) internal successors, (1245), 3 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 07:30:16,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:16,511 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:30:16,516 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 07:30:16,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 07:30:16,713 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:16,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:16,713 INFO L85 PathProgramCache]: Analyzing trace with hash -136496207, now seen corresponding path program 1 times [2023-09-01 07:30:16,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:16,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722310459] [2023-09-01 07:30:16,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:16,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:16,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:16,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722310459] [2023-09-01 07:30:16,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722310459] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:30:16,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723062301] [2023-09-01 07:30:16,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:16,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:30:16,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:30:16,797 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 07:30:16,825 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 07:30:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:16,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:30:16,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:30:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:16,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:30:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723062301] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:16,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:30:16,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:30:16,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816314903] [2023-09-01 07:30:16,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:16,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:30:16,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:16,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:30:16,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:30:16,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-09-01 07:30:16,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 412.25) internal successors, (1649), 4 states have internal predecessors, (1649), 0 states have call successors, (0), 0 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 07:30:16,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:16,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-09-01 07:30:16,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:17,501 INFO L130 PetriNetUnfolder]: 2967/4358 cut-off events. [2023-09-01 07:30:17,501 INFO L131 PetriNetUnfolder]: For 880/880 co-relation queries the response was YES. [2023-09-01 07:30:17,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10198 conditions, 4358 events. 2967/4358 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 22034 event pairs, 278 based on Foata normal form. 0/3774 useless extension candidates. Maximal degree in co-relation 10178. Up to 1980 conditions per place. [2023-09-01 07:30:17,514 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 59 selfloop transitions, 2 changer transitions 3/64 dead transitions. [2023-09-01 07:30:17,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 333 flow [2023-09-01 07:30:17,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:30:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:30:17,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1692 transitions. [2023-09-01 07:30:17,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338461538461538 [2023-09-01 07:30:17,517 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1692 transitions. [2023-09-01 07:30:17,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1692 transitions. [2023-09-01 07:30:17,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:17,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1692 transitions. [2023-09-01 07:30:17,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 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 07:30:17,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 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 07:30:17,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 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 07:30:17,522 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 116 flow. Second operand 4 states and 1692 transitions. [2023-09-01 07:30:17,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 333 flow [2023-09-01 07:30:17,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:30:17,524 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 113 flow [2023-09-01 07:30:17,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2023-09-01 07:30:17,524 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-09-01 07:30:17,524 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 113 flow [2023-09-01 07:30:17,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 412.25) internal successors, (1649), 4 states have internal predecessors, (1649), 0 states have call successors, (0), 0 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 07:30:17,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:17,525 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:30:17,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 07:30:17,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 07:30:17,731 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:17,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:17,731 INFO L85 PathProgramCache]: Analyzing trace with hash 65202430, now seen corresponding path program 1 times [2023-09-01 07:30:17,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:17,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608081584] [2023-09-01 07:30:17,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:17,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:17,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:17,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608081584] [2023-09-01 07:30:17,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608081584] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:17,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:30:17,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:30:17,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698146430] [2023-09-01 07:30:17,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:17,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:30:17,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:17,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:30:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:30:17,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-09-01 07:30:17,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 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 07:30:17,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:17,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-09-01 07:30:17,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:18,294 INFO L130 PetriNetUnfolder]: 2967/4358 cut-off events. [2023-09-01 07:30:18,294 INFO L131 PetriNetUnfolder]: For 2162/2162 co-relation queries the response was YES. [2023-09-01 07:30:18,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10686 conditions, 4358 events. 2967/4358 cut-off events. For 2162/2162 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 20793 event pairs, 1756 based on Foata normal form. 0/4066 useless extension candidates. Maximal degree in co-relation 10666. Up to 3425 conditions per place. [2023-09-01 07:30:18,307 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 44 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-09-01 07:30:18,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 259 flow [2023-09-01 07:30:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:30:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:30:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1265 transitions. [2023-09-01 07:30:18,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324786324786325 [2023-09-01 07:30:18,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1265 transitions. [2023-09-01 07:30:18,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1265 transitions. [2023-09-01 07:30:18,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:18,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1265 transitions. [2023-09-01 07:30:18,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.6666666666667) internal successors, (1265), 3 states have internal predecessors, (1265), 0 states have call successors, (0), 0 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 07:30:18,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:18,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 07:30:18,313 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 113 flow. Second operand 3 states and 1265 transitions. [2023-09-01 07:30:18,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 259 flow [2023-09-01 07:30:18,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 253 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:30:18,315 INFO L231 Difference]: Finished difference. Result has 50 places, 31 transitions, 122 flow [2023-09-01 07:30:18,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=31} [2023-09-01 07:30:18,316 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-09-01 07:30:18,316 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 31 transitions, 122 flow [2023-09-01 07:30:18,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 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 07:30:18,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:30:18,317 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:30:18,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 07:30:18,317 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 07:30:18,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:30:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash 2021277161, now seen corresponding path program 1 times [2023-09-01 07:30:18,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:30:18,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543817536] [2023-09-01 07:30:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:18,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:30:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:18,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:30:18,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543817536] [2023-09-01 07:30:18,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543817536] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:30:18,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799047391] [2023-09-01 07:30:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:30:18,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:30:18,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:30:18,395 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:30:18,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 07:30:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:30:18,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:30:18,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:30:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:30:18,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:30:18,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799047391] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:30:18,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:30:18,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:30:18,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137148440] [2023-09-01 07:30:18,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:30:18,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:30:18,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:30:18,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:30:18,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:30:18,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-09-01 07:30:18,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 31 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 412.75) internal successors, (1651), 4 states have internal predecessors, (1651), 0 states have call successors, (0), 0 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 07:30:18,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:30:18,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-09-01 07:30:18,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:30:18,979 INFO L130 PetriNetUnfolder]: 2325/3424 cut-off events. [2023-09-01 07:30:18,979 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 07:30:18,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9435 conditions, 3424 events. 2325/3424 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15811 event pairs, 616 based on Foata normal form. 0/3424 useless extension candidates. Maximal degree in co-relation 9414. Up to 1265 conditions per place. [2023-09-01 07:30:18,987 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-09-01 07:30:18,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 336 flow [2023-09-01 07:30:18,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:30:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:30:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1685 transitions. [2023-09-01 07:30:18,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205128205128207 [2023-09-01 07:30:18,990 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1685 transitions. [2023-09-01 07:30:18,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1685 transitions. [2023-09-01 07:30:18,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:30:18,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1685 transitions. [2023-09-01 07:30:18,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 0 states have call successors, (0), 0 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 07:30:18,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 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 07:30:18,995 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 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 07:30:18,995 INFO L175 Difference]: Start difference. First operand has 50 places, 31 transitions, 122 flow. Second operand 4 states and 1685 transitions. [2023-09-01 07:30:18,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 336 flow [2023-09-01 07:30:19,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 332 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 07:30:19,005 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-09-01 07:30:19,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-09-01 07:30:19,005 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-09-01 07:30:19,005 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-09-01 07:30:19,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 412.75) internal successors, (1651), 4 states have internal predecessors, (1651), 0 states have call successors, (0), 0 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 07:30:19,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 53 remaining) [2023-09-01 07:30:19,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 53 remaining) [2023-09-01 07:30:19,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 53 remaining) [2023-09-01 07:30:19,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 53 remaining) [2023-09-01 07:30:19,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 53 remaining) [2023-09-01 07:30:19,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 53 remaining) [2023-09-01 07:30:19,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 53 remaining) [2023-09-01 07:30:19,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 53 remaining) [2023-09-01 07:30:19,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 53 remaining) [2023-09-01 07:30:19,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 53 remaining) [2023-09-01 07:30:19,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 53 remaining) [2023-09-01 07:30:19,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 53 remaining) [2023-09-01 07:30:19,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 53 remaining) [2023-09-01 07:30:19,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 53 remaining) [2023-09-01 07:30:19,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 53 remaining) [2023-09-01 07:30:19,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 53 remaining) [2023-09-01 07:30:19,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 53 remaining) [2023-09-01 07:30:19,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 53 remaining) [2023-09-01 07:30:19,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 53 remaining) [2023-09-01 07:30:19,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 53 remaining) [2023-09-01 07:30:19,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 53 remaining) [2023-09-01 07:30:19,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 53 remaining) [2023-09-01 07:30:19,009 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 53 remaining) [2023-09-01 07:30:19,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 53 remaining) [2023-09-01 07:30:19,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 53 remaining) [2023-09-01 07:30:19,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 53 remaining) [2023-09-01 07:30:19,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 53 remaining) [2023-09-01 07:30:19,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 53 remaining) [2023-09-01 07:30:19,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 07:30:19,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:30:19,220 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:30:19,225 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 07:30:19,225 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 07:30:19,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 07:30:19 BasicIcfg [2023-09-01 07:30:19,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 07:30:19,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 07:30:19,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 07:30:19,228 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 07:30:19,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:29:33" (3/4) ... [2023-09-01 07:30:19,230 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 07:30:19,236 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 07:30:19,236 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 07:30:19,236 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 07:30:19,240 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-09-01 07:30:19,240 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 07:30:19,241 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 07:30:19,241 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 07:30:19,280 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 07:30:19,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 07:30:19,281 INFO L158 Benchmark]: Toolchain (without parser) took 47106.35ms. Allocated memory was 81.8MB in the beginning and 4.1GB in the end (delta: 4.0GB). Free memory was 61.1MB in the beginning and 3.1GB in the end (delta: -3.0GB). Peak memory consumption was 934.6MB. Max. memory is 16.1GB. [2023-09-01 07:30:19,281 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 07:30:19,282 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.44ms. Allocated memory is still 81.8MB. Free memory was 60.8MB in the beginning and 48.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 07:30:19,282 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.29ms. Allocated memory is still 81.8MB. Free memory was 48.0MB in the beginning and 45.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:30:19,282 INFO L158 Benchmark]: Boogie Preprocessor took 58.53ms. Allocated memory is still 81.8MB. Free memory was 45.0MB in the beginning and 42.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:30:19,282 INFO L158 Benchmark]: RCFGBuilder took 717.08ms. Allocated memory is still 81.8MB. Free memory was 42.9MB in the beginning and 33.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2023-09-01 07:30:19,283 INFO L158 Benchmark]: TraceAbstraction took 45882.83ms. Allocated memory was 81.8MB in the beginning and 4.1GB in the end (delta: 4.0GB). Free memory was 32.4MB in the beginning and 3.1GB in the end (delta: -3.1GB). Peak memory consumption was 902.7MB. Max. memory is 16.1GB. [2023-09-01 07:30:19,283 INFO L158 Benchmark]: Witness Printer took 52.65ms. Allocated memory is still 4.1GB. Free memory was 3.1GB in the beginning and 3.1GB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 07:30:19,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.44ms. Allocated memory is still 81.8MB. Free memory was 60.8MB in the beginning and 48.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.29ms. Allocated memory is still 81.8MB. Free memory was 48.0MB in the beginning and 45.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.53ms. Allocated memory is still 81.8MB. Free memory was 45.0MB in the beginning and 42.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 717.08ms. Allocated memory is still 81.8MB. Free memory was 42.9MB in the beginning and 33.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * TraceAbstraction took 45882.83ms. Allocated memory was 81.8MB in the beginning and 4.1GB in the end (delta: 4.0GB). Free memory was 32.4MB in the beginning and 3.1GB in the end (delta: -3.1GB). Peak memory consumption was 902.7MB. Max. memory is 16.1GB. * Witness Printer took 52.65ms. Allocated memory is still 4.1GB. Free memory was 3.1GB in the beginning and 3.1GB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.3s, 398 PlacesBefore, 54 PlacesAfterwards, 419 TransitionsBefore, 48 TransitionsAfterwards, 53934 CoEnabledTransitionPairs, 8 FixpointIterations, 125 TrivialSequentialCompositions, 289 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 86 ConcurrentYvCompositions, 27 ChoiceCompositions, 535 TotalNumberOfCompositions, 50359 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 49677, independent: 49652, independent conditional: 0, independent unconditional: 49652, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 31740, independent: 31726, independent conditional: 0, independent unconditional: 31726, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 49677, independent: 17926, independent conditional: 0, independent unconditional: 17926, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 31740, unknown conditional: 0, unknown unconditional: 31740] , Statistics on independence cache: Total cache size (in pairs): 150, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 655 locations, 53 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 45.7s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 20.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 19.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1249 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 954 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1806 IncrementalHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 51 mSDtfsCounter, 1806 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=14, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 235 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 517 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1872 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 32 InterpolantComputations, 16 PerfectInterpolantSequences, 150/168 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 07:30:19,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE