./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/popl20-bad-three-array-sum-alt.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 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:29:51,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:29:51,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:29:51,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:29:51,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:29:51,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:29:51,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:29:51,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:29:51,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:29:51,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:29:51,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:29:51,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:29:51,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:29:51,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:29:51,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:29:51,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:29:51,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:29:51,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:29:51,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:29:51,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:29:51,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:29:51,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:29:51,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:29:51,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:29:51,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:29:51,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:29:51,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:29:51,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:29:51,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:29:51,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:29:51,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:29:51,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:29:51,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:29:51,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:29:51,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:29:51,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:29:51,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:29:51,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:29:51,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:29:51,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:29:51,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:29:51,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:29:51,367 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:29:51,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:29:51,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:29:51,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:29:51,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:29:51,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:29:51,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:29:51,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:29:51,371 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:29:51,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:29:51,372 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:29:51,372 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:29:51,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:29:51,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:29:51,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:29:51,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:29:51,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:29:51,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:29:51,373 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:29:51,374 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:29:51,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:29:51,374 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:29:51,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:29:51,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:29:51,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:29:51,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:29:51,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:29:51,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:29:51,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:29:51,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:29:51,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:29:51,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:29:51,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:29:51,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:29:51,377 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:29:51,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:29:51,377 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:29:51,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:29:51,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:29:51,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:29:51,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:29:51,713 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:29:51,713 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:29:51,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c [2023-08-30 11:29:52,960 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:29:53,113 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:29:53,114 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c [2023-08-30 11:29:53,127 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8601b29e7/8f96d71161d14a67a9c0d5b252626fae/FLAG0c2fbdcac [2023-08-30 11:29:53,146 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8601b29e7/8f96d71161d14a67a9c0d5b252626fae [2023-08-30 11:29:53,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:29:53,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:29:53,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:29:53,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:29:53,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:29:53,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de4a0d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53, skipping insertion in model container [2023-08-30 11:29:53,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:29:53,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:29:53,321 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/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2023-08-30 11:29:53,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:29:53,343 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:29:53,381 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/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2023-08-30 11:29:53,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:29:53,411 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:29:53,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53 WrapperNode [2023-08-30 11:29:53,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:29:53,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:29:53,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:29:53,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:29:53,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,484 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 357 [2023-08-30 11:29:53,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:29:53,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:29:53,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:29:53,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:29:53,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,542 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:29:53,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:29:53,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:29:53,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:29:53,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53" (1/1) ... [2023-08-30 11:29:53,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:29:53,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:29:53,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:29:53,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:29:53,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:29:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:29:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:29:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:29:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:29:53,631 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:29:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:29:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:29:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:29:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:29:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:29:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:29:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:29:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:29:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:29:53,635 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:29:53,794 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:29:53,796 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:29:54,421 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:29:54,433 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:29:54,434 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:29:54,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:29:54 BoogieIcfgContainer [2023-08-30 11:29:54,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:29:54,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:29:54,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:29:54,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:29:54,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:29:53" (1/3) ... [2023-08-30 11:29:54,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef5b8e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:29:54, skipping insertion in model container [2023-08-30 11:29:54,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:53" (2/3) ... [2023-08-30 11:29:54,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef5b8e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:29:54, skipping insertion in model container [2023-08-30 11:29:54,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:29:54" (3/3) ... [2023-08-30 11:29:54,443 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2023-08-30 11:29:54,451 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:29:54,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:29:54,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-30 11:29:54,458 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:29:54,571 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:29:54,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 454 transitions, 932 flow [2023-08-30 11:29:54,733 INFO L130 PetriNetUnfolder]: 39/451 cut-off events. [2023-08-30 11:29:54,734 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:29:54,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 451 events. 39/451 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 942 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 277. Up to 2 conditions per place. [2023-08-30 11:29:54,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 454 transitions, 932 flow [2023-08-30 11:29:54,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 430 transitions, 878 flow [2023-08-30 11:29:54,756 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:29:54,763 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 402 places, 430 transitions, 878 flow [2023-08-30 11:29:54,765 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 402 places, 430 transitions, 878 flow [2023-08-30 11:29:54,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 430 transitions, 878 flow [2023-08-30 11:29:54,858 INFO L130 PetriNetUnfolder]: 38/430 cut-off events. [2023-08-30 11:29:54,858 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:29:54,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 430 events. 38/430 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 879 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 277. Up to 2 conditions per place. [2023-08-30 11:29:54,880 INFO L119 LiptonReduction]: Number of co-enabled transitions 37326 [2023-08-30 11:30:19,977 INFO L134 LiptonReduction]: Checked pairs total: 38791 [2023-08-30 11:30:19,977 INFO L136 LiptonReduction]: Total number of compositions: 576 [2023-08-30 11:30:19,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:30:19,996 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;@75280c9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:30:19,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-08-30 11:30:19,999 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:30:20,000 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:30:20,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:20,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:30:20,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:30:20,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:20,005 INFO L85 PathProgramCache]: Analyzing trace with hash 60481, now seen corresponding path program 1 times [2023-08-30 11:30:20,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:20,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24422443] [2023-08-30 11:30:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:20,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:30:20,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24422443] [2023-08-30 11:30:20,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24422443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:20,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:20,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:30:20,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33012623] [2023-08-30 11:30:20,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:20,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:30:20,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:20,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:30:20,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:30:20,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1030 [2023-08-30 11:30:20,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:20,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:20,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1030 [2023-08-30 11:30:20,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:24,024 INFO L130 PetriNetUnfolder]: 17709/22097 cut-off events. [2023-08-30 11:30:24,025 INFO L131 PetriNetUnfolder]: For 278/278 co-relation queries the response was YES. [2023-08-30 11:30:24,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44603 conditions, 22097 events. 17709/22097 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 2207. Compared 111250 event pairs, 8670 based on Foata normal form. 0/4889 useless extension candidates. Maximal degree in co-relation 20211. Up to 10962 conditions per place. [2023-08-30 11:30:24,163 INFO L137 encePairwiseOnDemand]: 1006/1030 looper letters, 95 selfloop transitions, 6 changer transitions 0/104 dead transitions. [2023-08-30 11:30:24,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 104 transitions, 446 flow [2023-08-30 11:30:24,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:30:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:30:24,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1376 transitions. [2023-08-30 11:30:24,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453074433656958 [2023-08-30 11:30:24,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1376 transitions. [2023-08-30 11:30:24,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1376 transitions. [2023-08-30 11:30:24,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:24,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1376 transitions. [2023-08-30 11:30:24,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 458.6666666666667) internal successors, (1376), 3 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:24,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:24,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:24,204 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 156 flow. Second operand 3 states and 1376 transitions. [2023-08-30 11:30:24,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 104 transitions, 446 flow [2023-08-30 11:30:24,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 104 transitions, 422 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 11:30:24,221 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 176 flow [2023-08-30 11:30:24,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-08-30 11:30:24,226 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -14 predicate places. [2023-08-30 11:30:24,226 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 176 flow [2023-08-30 11:30:24,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:24,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:24,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:30:24,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:30:24,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:30:24,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:24,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1876647, now seen corresponding path program 1 times [2023-08-30 11:30:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:24,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499756294] [2023-08-30 11:30:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:30:24,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:24,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499756294] [2023-08-30 11:30:24,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499756294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:24,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:24,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:30:24,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045733826] [2023-08-30 11:30:24,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:24,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:30:24,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:24,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:30:24,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:30:24,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1030 [2023-08-30 11:30:24,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:24,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:24,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1030 [2023-08-30 11:30:24,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:27,225 INFO L130 PetriNetUnfolder]: 17709/22094 cut-off events. [2023-08-30 11:30:27,225 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 11:30:27,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44212 conditions, 22094 events. 17709/22094 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 2594. Compared 112449 event pairs, 8670 based on Foata normal form. 0/4895 useless extension candidates. Maximal degree in co-relation 22086. Up to 21912 conditions per place. [2023-08-30 11:30:27,331 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 55 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-30 11:30:27,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 276 flow [2023-08-30 11:30:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:30:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:30:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1299 transitions. [2023-08-30 11:30:27,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4203883495145631 [2023-08-30 11:30:27,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1299 transitions. [2023-08-30 11:30:27,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1299 transitions. [2023-08-30 11:30:27,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:27,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1299 transitions. [2023-08-30 11:30:27,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.0) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:27,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:27,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:27,347 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 176 flow. Second operand 3 states and 1299 transitions. [2023-08-30 11:30:27,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 276 flow [2023-08-30 11:30:27,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:30:27,349 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 154 flow [2023-08-30 11:30:27,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-30 11:30:27,350 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2023-08-30 11:30:27,350 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 154 flow [2023-08-30 11:30:27,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:27,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:27,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:30:27,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:30:27,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:30:27,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:27,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1876648, now seen corresponding path program 1 times [2023-08-30 11:30:27,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:27,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408090160] [2023-08-30 11:30:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:27,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:30:27,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:27,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408090160] [2023-08-30 11:30:27,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408090160] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:30:27,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454963832] [2023-08-30 11:30:27,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:27,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:30:27,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:30:27,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:30:27,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:30:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:27,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:30:27,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:30:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:30:27,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:30:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:30:27,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454963832] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:30:27,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:30:27,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:30:27,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950020411] [2023-08-30 11:30:27,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:30:27,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:30:27,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:27,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:30:27,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:30:27,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1030 [2023-08-30 11:30:27,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 416.14285714285717) internal successors, (2913), 7 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:27,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:27,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1030 [2023-08-30 11:30:27,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:33,837 INFO L130 PetriNetUnfolder]: 44271/55229 cut-off events. [2023-08-30 11:30:33,837 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-30 11:30:33,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110492 conditions, 55229 events. 44271/55229 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 4701. Compared 304298 event pairs, 21675 based on Foata normal form. 0/12226 useless extension candidates. Maximal degree in co-relation 110484. Up to 10960 conditions per place. [2023-08-30 11:30:34,102 INFO L137 encePairwiseOnDemand]: 1021/1030 looper letters, 218 selfloop transitions, 21 changer transitions 0/242 dead transitions. [2023-08-30 11:30:34,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 242 transitions, 1052 flow [2023-08-30 11:30:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:30:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:30:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2738 transitions. [2023-08-30 11:30:34,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443042071197411 [2023-08-30 11:30:34,110 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2738 transitions. [2023-08-30 11:30:34,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2738 transitions. [2023-08-30 11:30:34,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:34,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2738 transitions. [2023-08-30 11:30:34,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 456.3333333333333) internal successors, (2738), 6 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:34,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:34,129 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:34,129 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 154 flow. Second operand 6 states and 2738 transitions. [2023-08-30 11:30:34,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 242 transitions, 1052 flow [2023-08-30 11:30:34,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 242 transitions, 1051 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:30:34,135 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 303 flow [2023-08-30 11:30:34,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-08-30 11:30:34,137 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-08-30 11:30:34,137 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 303 flow [2023-08-30 11:30:34,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 416.14285714285717) internal successors, (2913), 7 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:34,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:34,139 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:30:34,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 11:30:34,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:30:34,345 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:30:34,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:34,345 INFO L85 PathProgramCache]: Analyzing trace with hash 74339778, now seen corresponding path program 2 times [2023-08-30 11:30:34,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:34,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760505658] [2023-08-30 11:30:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:34,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:30:34,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760505658] [2023-08-30 11:30:34,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760505658] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:30:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375883910] [2023-08-30 11:30:34,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:30:34,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:30:34,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:30:34,495 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:30:34,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:30:34,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:30:34,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:30:34,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:30:34,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:30:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:30:34,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:30:34,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375883910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:34,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:30:34,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:30:34,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484349875] [2023-08-30 11:30:34,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:34,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:30:34,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:30:34,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:30:34,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1030 [2023-08-30 11:30:34,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 419.0) internal successors, (1257), 3 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:34,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:34,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1030 [2023-08-30 11:30:34,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:40,360 INFO L130 PetriNetUnfolder]: 44271/55228 cut-off events. [2023-08-30 11:30:40,361 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 11:30:40,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110537 conditions, 55228 events. 44271/55228 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 4648. Compared 304814 event pairs, 21675 based on Foata normal form. 1/12235 useless extension candidates. Maximal degree in co-relation 110525. Up to 54768 conditions per place. [2023-08-30 11:30:40,820 INFO L137 encePairwiseOnDemand]: 1027/1030 looper letters, 64 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-08-30 11:30:40,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 73 transitions, 433 flow [2023-08-30 11:30:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:30:40,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:30:40,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1305 transitions. [2023-08-30 11:30:40,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223300970873786 [2023-08-30 11:30:40,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1305 transitions. [2023-08-30 11:30:40,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1305 transitions. [2023-08-30 11:30:40,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:40,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1305 transitions. [2023-08-30 11:30:40,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:40,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:40,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:40,836 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 303 flow. Second operand 3 states and 1305 transitions. [2023-08-30 11:30:40,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 73 transitions, 433 flow [2023-08-30 11:30:40,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 403 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:30:40,839 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 275 flow [2023-08-30 11:30:40,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2023-08-30 11:30:40,841 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-08-30 11:30:40,841 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 275 flow [2023-08-30 11:30:40,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 419.0) internal successors, (1257), 3 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:40,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:40,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:40,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:30:41,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 11:30:41,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:30:41,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:41,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1126192154, now seen corresponding path program 1 times [2023-08-30 11:30:41,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:41,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876495982] [2023-08-30 11:30:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:41,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:30:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876495982] [2023-08-30 11:30:41,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876495982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:41,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:41,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:30:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401879396] [2023-08-30 11:30:41,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:41,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:30:41,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:41,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:30:41,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:30:41,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-08-30 11:30:41,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:41,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:41,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-08-30 11:30:41,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:48,958 INFO L130 PetriNetUnfolder]: 58916/74263 cut-off events. [2023-08-30 11:30:48,958 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-30 11:30:49,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148996 conditions, 74263 events. 58916/74263 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 6065. Compared 440060 event pairs, 10355 based on Foata normal form. 0/17172 useless extension candidates. Maximal degree in co-relation 148983. Up to 51246 conditions per place. [2023-08-30 11:30:49,333 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 102 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2023-08-30 11:30:49,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 109 transitions, 564 flow [2023-08-30 11:30:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:30:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:30:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1356 transitions. [2023-08-30 11:30:49,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388349514563107 [2023-08-30 11:30:49,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1356 transitions. [2023-08-30 11:30:49,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1356 transitions. [2023-08-30 11:30:49,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:49,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1356 transitions. [2023-08-30 11:30:49,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 452.0) internal successors, (1356), 3 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:49,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:49,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:49,347 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 275 flow. Second operand 3 states and 1356 transitions. [2023-08-30 11:30:49,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 109 transitions, 564 flow [2023-08-30 11:30:49,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 552 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:30:49,350 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 295 flow [2023-08-30 11:30:49,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2023-08-30 11:30:49,350 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-08-30 11:30:49,351 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 295 flow [2023-08-30 11:30:49,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:49,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:49,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:49,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:30:49,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:30:49,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:49,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1126192174, now seen corresponding path program 1 times [2023-08-30 11:30:49,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:49,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898269024] [2023-08-30 11:30:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:49,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:30:49,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:49,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898269024] [2023-08-30 11:30:49,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898269024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:49,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:49,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:30:49,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306184713] [2023-08-30 11:30:49,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:49,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:30:49,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:49,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:30:49,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:30:49,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-08-30 11:30:49,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 295 flow. Second operand has 3 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) [2023-08-30 11:30:49,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:49,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-08-30 11:30:49,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:57,440 INFO L130 PetriNetUnfolder]: 58331/74763 cut-off events. [2023-08-30 11:30:57,440 INFO L131 PetriNetUnfolder]: For 2101/2101 co-relation queries the response was YES. [2023-08-30 11:30:57,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157222 conditions, 74763 events. 58331/74763 cut-off events. For 2101/2101 co-relation queries the response was YES. Maximal size of possible extension queue 6382. Compared 466557 event pairs, 13935 based on Foata normal form. 0/21056 useless extension candidates. Maximal degree in co-relation 157208. Up to 47904 conditions per place. [2023-08-30 11:30:57,768 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 103 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-30 11:30:57,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 107 transitions, 566 flow [2023-08-30 11:30:57,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:30:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:30:57,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1353 transitions. [2023-08-30 11:30:57,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43786407766990293 [2023-08-30 11:30:57,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1353 transitions. [2023-08-30 11:30:57,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1353 transitions. [2023-08-30 11:30:57,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:57,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1353 transitions. [2023-08-30 11:30:57,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 451.0) internal successors, (1353), 3 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:57,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:57,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:57,782 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 295 flow. Second operand 3 states and 1353 transitions. [2023-08-30 11:30:57,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 107 transitions, 566 flow [2023-08-30 11:30:57,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 107 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:30:57,790 INFO L231 Difference]: Finished difference. Result has 65 places, 74 transitions, 287 flow [2023-08-30 11:30:57,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=65, PETRI_TRANSITIONS=74} [2023-08-30 11:30:57,791 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2023-08-30 11:30:57,792 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 74 transitions, 287 flow [2023-08-30 11:30:57,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-30 11:30:57,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:57,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:57,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:30:57,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:30:57,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1126192153, now seen corresponding path program 1 times [2023-08-30 11:30:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:57,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930133856] [2023-08-30 11:30:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:57,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:30:57,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:57,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930133856] [2023-08-30 11:30:57,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930133856] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:57,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:57,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:30:57,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392998652] [2023-08-30 11:30:57,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:57,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:30:57,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:57,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:30:57,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:30:57,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1030 [2023-08-30 11:30:57,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 74 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 408.4) internal successors, (2042), 5 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:57,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:57,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1030 [2023-08-30 11:30:57,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:05,504 INFO L130 PetriNetUnfolder]: 56628/73379 cut-off events. [2023-08-30 11:31:05,504 INFO L131 PetriNetUnfolder]: For 5195/5195 co-relation queries the response was YES. [2023-08-30 11:31:05,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154484 conditions, 73379 events. 56628/73379 cut-off events. For 5195/5195 co-relation queries the response was YES. Maximal size of possible extension queue 6222. Compared 468628 event pairs, 27332 based on Foata normal form. 890/23091 useless extension candidates. Maximal degree in co-relation 154470. Up to 57222 conditions per place. [2023-08-30 11:31:06,027 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 173 selfloop transitions, 23 changer transitions 0/198 dead transitions. [2023-08-30 11:31:06,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 198 transitions, 1018 flow [2023-08-30 11:31:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:31:06,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:31:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3034 transitions. [2023-08-30 11:31:06,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42080443828016645 [2023-08-30 11:31:06,036 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3034 transitions. [2023-08-30 11:31:06,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3034 transitions. [2023-08-30 11:31:06,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:06,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3034 transitions. [2023-08-30 11:31:06,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 433.42857142857144) internal successors, (3034), 7 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:06,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:06,054 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:06,054 INFO L175 Difference]: Start difference. First operand has 65 places, 74 transitions, 287 flow. Second operand 7 states and 3034 transitions. [2023-08-30 11:31:06,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 198 transitions, 1018 flow [2023-08-30 11:31:06,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 198 transitions, 1012 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:31:06,159 INFO L231 Difference]: Finished difference. Result has 74 places, 84 transitions, 444 flow [2023-08-30 11:31:06,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=444, PETRI_PLACES=74, PETRI_TRANSITIONS=84} [2023-08-30 11:31:06,159 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2023-08-30 11:31:06,160 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 84 transitions, 444 flow [2023-08-30 11:31:06,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 408.4) internal successors, (2042), 5 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:06,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:06,161 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:31:06,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:31:06,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:31:06,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:06,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1119647531, now seen corresponding path program 1 times [2023-08-30 11:31:06,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:06,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744568097] [2023-08-30 11:31:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:06,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 11:31:06,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:06,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744568097] [2023-08-30 11:31:06,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744568097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:06,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:06,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:31:06,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151880951] [2023-08-30 11:31:06,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:06,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:31:06,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:06,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:31:06,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:31:06,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1030 [2023-08-30 11:31:06,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 84 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 408.25) internal successors, (1633), 4 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:06,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:06,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1030 [2023-08-30 11:31:06,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:12,604 INFO L130 PetriNetUnfolder]: 43251/56075 cut-off events. [2023-08-30 11:31:12,604 INFO L131 PetriNetUnfolder]: For 49397/49798 co-relation queries the response was YES. [2023-08-30 11:31:12,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142171 conditions, 56075 events. 43251/56075 cut-off events. For 49397/49798 co-relation queries the response was YES. Maximal size of possible extension queue 5347. Compared 353354 event pairs, 25296 based on Foata normal form. 403/21973 useless extension candidates. Maximal degree in co-relation 142152. Up to 53434 conditions per place. [2023-08-30 11:31:12,905 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 89 selfloop transitions, 15 changer transitions 0/108 dead transitions. [2023-08-30 11:31:12,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 108 transitions, 656 flow [2023-08-30 11:31:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:31:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:31:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1718 transitions. [2023-08-30 11:31:12,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41699029126213594 [2023-08-30 11:31:12,909 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1718 transitions. [2023-08-30 11:31:12,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1718 transitions. [2023-08-30 11:31:12,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:12,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1718 transitions. [2023-08-30 11:31:12,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 429.5) internal successors, (1718), 4 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:12,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:12,918 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:12,919 INFO L175 Difference]: Start difference. First operand has 74 places, 84 transitions, 444 flow. Second operand 4 states and 1718 transitions. [2023-08-30 11:31:12,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 108 transitions, 656 flow [2023-08-30 11:31:12,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 108 transitions, 638 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-30 11:31:12,948 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 390 flow [2023-08-30 11:31:12,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2023-08-30 11:31:12,949 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2023-08-30 11:31:12,949 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 390 flow [2023-08-30 11:31:12,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 408.25) internal successors, (1633), 4 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:12,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:12,950 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 11:31:12,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:31:12,950 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:31:12,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:12,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1536217221, now seen corresponding path program 1 times [2023-08-30 11:31:12,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:12,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344596464] [2023-08-30 11:31:12,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 11:31:13,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:13,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344596464] [2023-08-30 11:31:13,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344596464] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:13,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052279125] [2023-08-30 11:31:13,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:13,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:13,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:13,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:31:13,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:31:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:13,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 11:31:13,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:31:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:31:13,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:31:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:31:13,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052279125] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:31:13,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:31:13,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-30 11:31:13,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770886447] [2023-08-30 11:31:13,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:31:13,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 11:31:13,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:13,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 11:31:13,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-30 11:31:13,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 1030 [2023-08-30 11:31:13,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 390 flow. Second operand has 14 states, 14 states have (on average 405.2857142857143) internal successors, (5674), 14 states have internal predecessors, (5674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:13,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:13,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 1030 [2023-08-30 11:31:13,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:20,886 INFO L130 PetriNetUnfolder]: 48331/62749 cut-off events. [2023-08-30 11:31:20,886 INFO L131 PetriNetUnfolder]: For 18971/19372 co-relation queries the response was YES. [2023-08-30 11:31:21,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142130 conditions, 62749 events. 48331/62749 cut-off events. For 18971/19372 co-relation queries the response was YES. Maximal size of possible extension queue 4769. Compared 393100 event pairs, 28231 based on Foata normal form. 2143/25182 useless extension candidates. Maximal degree in co-relation 142111. Up to 40062 conditions per place. [2023-08-30 11:31:21,220 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 162 selfloop transitions, 27 changer transitions 0/193 dead transitions. [2023-08-30 11:31:21,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 193 transitions, 1103 flow [2023-08-30 11:31:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 11:31:21,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 11:31:21,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4224 transitions. [2023-08-30 11:31:21,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41009708737864076 [2023-08-30 11:31:21,230 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4224 transitions. [2023-08-30 11:31:21,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4224 transitions. [2023-08-30 11:31:21,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:21,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4224 transitions. [2023-08-30 11:31:21,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 422.4) internal successors, (4224), 10 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,252 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,252 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 390 flow. Second operand 10 states and 4224 transitions. [2023-08-30 11:31:21,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 193 transitions, 1103 flow [2023-08-30 11:31:21,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 193 transitions, 1068 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:31:21,274 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 508 flow [2023-08-30 11:31:21,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=508, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2023-08-30 11:31:21,276 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2023-08-30 11:31:21,276 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 508 flow [2023-08-30 11:31:21,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 405.2857142857143) internal successors, (5674), 14 states have internal predecessors, (5674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:21,278 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 11:31:21,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:31:21,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:21,484 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:31:21,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:21,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1564975723, now seen corresponding path program 2 times [2023-08-30 11:31:21,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:21,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279356412] [2023-08-30 11:31:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:21,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 11:31:21,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:21,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279356412] [2023-08-30 11:31:21,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279356412] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:21,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328495785] [2023-08-30 11:31:21,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:31:21,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:21,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:21,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:31:21,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:31:21,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:31:21,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:31:21,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:31:21,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:31:21,773 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 11:31:21,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:31:21,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328495785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:21,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:31:21,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 11:31:21,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428534131] [2023-08-30 11:31:21,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:21,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:31:21,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:21,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:31:21,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 11:31:21,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 1030 [2023-08-30 11:31:21,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:21,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 1030 [2023-08-30 11:31:21,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:27,736 INFO L130 PetriNetUnfolder]: 42562/54764 cut-off events. [2023-08-30 11:31:27,736 INFO L131 PetriNetUnfolder]: For 33194/33595 co-relation queries the response was YES. [2023-08-30 11:31:27,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118385 conditions, 54764 events. 42562/54764 cut-off events. For 33194/33595 co-relation queries the response was YES. Maximal size of possible extension queue 3447. Compared 328749 event pairs, 23861 based on Foata normal form. 3676/21360 useless extension candidates. Maximal degree in co-relation 118362. Up to 54470 conditions per place. [2023-08-30 11:31:28,027 INFO L137 encePairwiseOnDemand]: 1024/1030 looper letters, 74 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-08-30 11:31:28,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 604 flow [2023-08-30 11:31:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1298 transitions. [2023-08-30 11:31:28,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42006472491909386 [2023-08-30 11:31:28,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1298 transitions. [2023-08-30 11:31:28,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1298 transitions. [2023-08-30 11:31:28,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:28,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1298 transitions. [2023-08-30 11:31:28,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 432.6666666666667) internal successors, (1298), 3 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:28,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:28,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:28,038 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 508 flow. Second operand 3 states and 1298 transitions. [2023-08-30 11:31:28,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 604 flow [2023-08-30 11:31:28,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 511 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-30 11:31:28,057 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 363 flow [2023-08-30 11:31:28,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2023-08-30 11:31:28,058 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2023-08-30 11:31:28,058 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 363 flow [2023-08-30 11:31:28,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:28,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:28,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:28,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:31:28,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:28,264 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:31:28,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:28,265 INFO L85 PathProgramCache]: Analyzing trace with hash -43015009, now seen corresponding path program 1 times [2023-08-30 11:31:28,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:28,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340068548] [2023-08-30 11:31:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:28,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:28,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:28,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340068548] [2023-08-30 11:31:28,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340068548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:28,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:28,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:31:28,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238860575] [2023-08-30 11:31:28,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:28,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:31:28,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:28,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:31:28,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:31:28,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1030 [2023-08-30 11:31:28,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 363 flow. Second operand has 5 states, 5 states have (on average 408.8) internal successors, (2044), 5 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:28,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:28,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1030 [2023-08-30 11:31:28,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:33,005 INFO L130 PetriNetUnfolder]: 31403/43285 cut-off events. [2023-08-30 11:31:33,006 INFO L131 PetriNetUnfolder]: For 5198/5330 co-relation queries the response was YES. [2023-08-30 11:31:33,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95263 conditions, 43285 events. 31403/43285 cut-off events. For 5198/5330 co-relation queries the response was YES. Maximal size of possible extension queue 3375. Compared 292501 event pairs, 22748 based on Foata normal form. 132/17277 useless extension candidates. Maximal degree in co-relation 95246. Up to 42128 conditions per place. [2023-08-30 11:31:33,198 INFO L137 encePairwiseOnDemand]: 1016/1030 looper letters, 96 selfloop transitions, 21 changer transitions 0/120 dead transitions. [2023-08-30 11:31:33,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 120 transitions, 693 flow [2023-08-30 11:31:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:31:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:31:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2135 transitions. [2023-08-30 11:31:33,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4145631067961165 [2023-08-30 11:31:33,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2135 transitions. [2023-08-30 11:31:33,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2135 transitions. [2023-08-30 11:31:33,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:33,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2135 transitions. [2023-08-30 11:31:33,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 427.0) internal successors, (2135), 5 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:33,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:33,213 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:33,213 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 363 flow. Second operand 5 states and 2135 transitions. [2023-08-30 11:31:33,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 120 transitions, 693 flow [2023-08-30 11:31:33,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 120 transitions, 692 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:31:33,218 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 427 flow [2023-08-30 11:31:33,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2023-08-30 11:31:33,219 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-08-30 11:31:33,219 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 427 flow [2023-08-30 11:31:33,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 408.8) internal successors, (2044), 5 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:33,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:33,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:33,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 11:31:33,220 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:31:33,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash -875630716, now seen corresponding path program 1 times [2023-08-30 11:31:33,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:33,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389168883] [2023-08-30 11:31:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:33,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:33,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:33,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389168883] [2023-08-30 11:31:33,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389168883] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:33,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210788139] [2023-08-30 11:31:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:33,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:33,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:33,757 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:31:33,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:31:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:33,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 11:31:33,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:31:33,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:31:33,970 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 11:31:33,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-30 11:31:34,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:31:34,069 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 11:31:34,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 11:31:34,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:31:34,142 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 11:31:34,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 11:31:34,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:31:34,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:31:34,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:31:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:34,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:31:34,412 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:31:34,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-08-30 11:31:34,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:31:34,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 119 [2023-08-30 11:31:34,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 100 [2023-08-30 11:31:34,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 96 [2023-08-30 11:31:34,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2023-08-30 11:31:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:34,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210788139] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:31:34,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:31:34,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-30 11:31:34,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605640104] [2023-08-30 11:31:34,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:31:34,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 11:31:34,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 11:31:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=434, Unknown=10, NotChecked=0, Total=552 [2023-08-30 11:31:35,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 1030 [2023-08-30 11:31:35,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 427 flow. Second operand has 24 states, 24 states have (on average 363.125) internal successors, (8715), 24 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:35,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:35,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 1030 [2023-08-30 11:31:35,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:43,385 INFO L130 PetriNetUnfolder]: 57576/74752 cut-off events. [2023-08-30 11:31:43,385 INFO L131 PetriNetUnfolder]: For 7654/7734 co-relation queries the response was YES. [2023-08-30 11:31:43,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184952 conditions, 74752 events. 57576/74752 cut-off events. For 7654/7734 co-relation queries the response was YES. Maximal size of possible extension queue 5614. Compared 486184 event pairs, 20113 based on Foata normal form. 80/27516 useless extension candidates. Maximal degree in co-relation 184932. Up to 52934 conditions per place. [2023-08-30 11:31:43,803 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 92 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2023-08-30 11:31:43,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 117 transitions, 775 flow [2023-08-30 11:31:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:31:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:31:43,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2982 transitions. [2023-08-30 11:31:43,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36189320388349516 [2023-08-30 11:31:43,808 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2982 transitions. [2023-08-30 11:31:43,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2982 transitions. [2023-08-30 11:31:43,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:43,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2982 transitions. [2023-08-30 11:31:43,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 372.75) internal successors, (2982), 8 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:43,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:43,819 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:43,819 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 427 flow. Second operand 8 states and 2982 transitions. [2023-08-30 11:31:43,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 117 transitions, 775 flow [2023-08-30 11:31:43,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 740 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:31:43,859 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 516 flow [2023-08-30 11:31:43,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=516, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2023-08-30 11:31:43,860 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2023-08-30 11:31:43,860 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 516 flow [2023-08-30 11:31:43,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 363.125) internal successors, (8715), 24 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:43,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:43,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:43,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 11:31:44,067 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,SelfDestructingSolverStorable11 [2023-08-30 11:31:44,068 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:31:44,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:44,069 INFO L85 PathProgramCache]: Analyzing trace with hash -875630748, now seen corresponding path program 1 times [2023-08-30 11:31:44,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:44,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39605874] [2023-08-30 11:31:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:44,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:44,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:44,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39605874] [2023-08-30 11:31:44,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39605874] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:44,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133922114] [2023-08-30 11:31:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:44,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:44,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:44,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:31:44,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:31:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:44,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-30 11:31:44,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:31:44,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:31:44,854 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 11:31:44,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-30 11:31:44,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:31:44,933 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 11:31:44,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 11:31:44,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:31:45,029 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 11:31:45,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:31:45,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:31:45,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:31:45,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:31:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:45,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:31:45,288 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:31:45,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-30 11:31:45,300 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:31:45,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1107 treesize of output 1075 [2023-08-30 11:31:45,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-08-30 11:31:45,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-30 11:31:45,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-30 11:31:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:45,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133922114] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:31:45,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:31:45,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-30 11:31:45,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263485350] [2023-08-30 11:31:45,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:31:45,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 11:31:45,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:45,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 11:31:45,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=434, Unknown=7, NotChecked=0, Total=552 [2023-08-30 11:31:46,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 1030 [2023-08-30 11:31:46,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 516 flow. Second operand has 24 states, 24 states have (on average 363.125) internal successors, (8715), 24 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:46,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:46,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 1030 [2023-08-30 11:31:46,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:55,690 INFO L130 PetriNetUnfolder]: 61731/80582 cut-off events. [2023-08-30 11:31:55,690 INFO L131 PetriNetUnfolder]: For 29319/29396 co-relation queries the response was YES. [2023-08-30 11:31:55,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207773 conditions, 80582 events. 61731/80582 cut-off events. For 29319/29396 co-relation queries the response was YES. Maximal size of possible extension queue 6156. Compared 538351 event pairs, 22073 based on Foata normal form. 82/32010 useless extension candidates. Maximal degree in co-relation 207750. Up to 58689 conditions per place. [2023-08-30 11:31:56,138 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 92 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2023-08-30 11:31:56,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 839 flow [2023-08-30 11:31:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:31:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:31:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2981 transitions. [2023-08-30 11:31:56,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3617718446601942 [2023-08-30 11:31:56,144 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2981 transitions. [2023-08-30 11:31:56,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2981 transitions. [2023-08-30 11:31:56,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:56,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2981 transitions. [2023-08-30 11:31:56,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 372.625) internal successors, (2981), 8 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:56,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:56,155 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:56,155 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 516 flow. Second operand 8 states and 2981 transitions. [2023-08-30 11:31:56,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 839 flow [2023-08-30 11:31:56,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 120 transitions, 837 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 11:31:56,191 INFO L231 Difference]: Finished difference. Result has 92 places, 96 transitions, 592 flow [2023-08-30 11:31:56,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=592, PETRI_PLACES=92, PETRI_TRANSITIONS=96} [2023-08-30 11:31:56,191 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 19 predicate places. [2023-08-30 11:31:56,191 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 96 transitions, 592 flow [2023-08-30 11:31:56,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 363.125) internal successors, (8715), 24 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:56,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:56,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:56,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 11:31:56,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:56,398 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:31:56,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:56,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1374171565, now seen corresponding path program 1 times [2023-08-30 11:31:56,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:56,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128619358] [2023-08-30 11:31:56,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:56,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:56,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:56,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128619358] [2023-08-30 11:31:56,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128619358] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:56,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623017313] [2023-08-30 11:31:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:56,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:56,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:56,997 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:31:56,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:31:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:57,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-30 11:31:57,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:31:57,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:31:57,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:31:57,184 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 11:31:57,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-30 11:31:57,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:31:57,290 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 11:31:57,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 11:31:57,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:31:57,389 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 11:31:57,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:31:57,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:31:57,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:31:57,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:31:57,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:31:57,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:31:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:57,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:31:59,753 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:31:59,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-30 11:31:59,765 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:31:59,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1099 treesize of output 1083 [2023-08-30 11:31:59,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 252 [2023-08-30 11:31:59,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 248 [2023-08-30 11:31:59,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 122 [2023-08-30 11:31:59,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 230 [2023-08-30 11:32:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:32:00,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623017313] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:32:00,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:32:00,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-30 11:32:00,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385717445] [2023-08-30 11:32:00,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:32:00,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 11:32:00,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:00,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 11:32:00,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=550, Unknown=10, NotChecked=0, Total=702 [2023-08-30 11:32:02,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:32:04,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:32:04,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 1030 [2023-08-30 11:32:04,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 96 transitions, 592 flow. Second operand has 27 states, 27 states have (on average 362.14814814814815) internal successors, (9778), 27 states have internal predecessors, (9778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:04,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:04,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 1030 [2023-08-30 11:32:04,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:13,576 INFO L130 PetriNetUnfolder]: 59500/77476 cut-off events. [2023-08-30 11:32:13,576 INFO L131 PetriNetUnfolder]: For 45048/45130 co-relation queries the response was YES. [2023-08-30 11:32:13,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205319 conditions, 77476 events. 59500/77476 cut-off events. For 45048/45130 co-relation queries the response was YES. Maximal size of possible extension queue 5735. Compared 512673 event pairs, 13043 based on Foata normal form. 127/31077 useless extension candidates. Maximal degree in co-relation 205293. Up to 54727 conditions per place. [2023-08-30 11:32:14,214 INFO L137 encePairwiseOnDemand]: 1019/1030 looper letters, 121 selfloop transitions, 32 changer transitions 0/156 dead transitions. [2023-08-30 11:32:14,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 156 transitions, 1156 flow [2023-08-30 11:32:14,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:32:14,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:32:14,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2999 transitions. [2023-08-30 11:32:14,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36395631067961165 [2023-08-30 11:32:14,218 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2999 transitions. [2023-08-30 11:32:14,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2999 transitions. [2023-08-30 11:32:14,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:14,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2999 transitions. [2023-08-30 11:32:14,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 374.875) internal successors, (2999), 8 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:14,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:14,227 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:14,227 INFO L175 Difference]: Start difference. First operand has 92 places, 96 transitions, 592 flow. Second operand 8 states and 2999 transitions. [2023-08-30 11:32:14,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 156 transitions, 1156 flow [2023-08-30 11:32:14,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 156 transitions, 1142 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 11:32:14,261 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 778 flow [2023-08-30 11:32:14,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=778, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2023-08-30 11:32:14,262 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 25 predicate places. [2023-08-30 11:32:14,262 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 778 flow [2023-08-30 11:32:14,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 362.14814814814815) internal successors, (9778), 27 states have internal predecessors, (9778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:14,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:32:14,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:14,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 11:32:14,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:32:14,469 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:32:14,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:32:14,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1627700661, now seen corresponding path program 1 times [2023-08-30 11:32:14,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:32:14,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314270955] [2023-08-30 11:32:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:14,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:32:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:32:14,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:32:14,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314270955] [2023-08-30 11:32:14,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314270955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:32:14,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:32:14,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:32:14,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540900750] [2023-08-30 11:32:14,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:32:14,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:32:14,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:14,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:32:14,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:32:14,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-08-30 11:32:14,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 778 flow. Second operand has 3 states, 3 states have (on average 425.3333333333333) internal successors, (1276), 3 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:14,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:14,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-08-30 11:32:14,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:25,127 INFO L130 PetriNetUnfolder]: 70833/96246 cut-off events. [2023-08-30 11:32:25,127 INFO L131 PetriNetUnfolder]: For 113747/114160 co-relation queries the response was YES. [2023-08-30 11:32:25,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271464 conditions, 96246 events. 70833/96246 cut-off events. For 113747/114160 co-relation queries the response was YES. Maximal size of possible extension queue 8142. Compared 735897 event pairs, 17643 based on Foata normal form. 408/42205 useless extension candidates. Maximal degree in co-relation 271435. Up to 57034 conditions per place. [2023-08-30 11:32:25,754 INFO L137 encePairwiseOnDemand]: 1025/1030 looper letters, 128 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2023-08-30 11:32:25,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 140 transitions, 1179 flow [2023-08-30 11:32:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:32:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:32:25,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1344 transitions. [2023-08-30 11:32:25,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349514563106796 [2023-08-30 11:32:25,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1344 transitions. [2023-08-30 11:32:25,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1344 transitions. [2023-08-30 11:32:25,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:25,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1344 transitions. [2023-08-30 11:32:25,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:25,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:25,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:25,761 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 778 flow. Second operand 3 states and 1344 transitions. [2023-08-30 11:32:25,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 140 transitions, 1179 flow [2023-08-30 11:32:25,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 140 transitions, 1159 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 11:32:25,840 INFO L231 Difference]: Finished difference. Result has 99 places, 110 transitions, 779 flow [2023-08-30 11:32:25,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=779, PETRI_PLACES=99, PETRI_TRANSITIONS=110} [2023-08-30 11:32:25,841 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 26 predicate places. [2023-08-30 11:32:25,841 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 110 transitions, 779 flow [2023-08-30 11:32:25,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 425.3333333333333) internal successors, (1276), 3 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:25,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:32:25,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:25,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 11:32:25,841 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:32:25,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:32:25,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1627700658, now seen corresponding path program 1 times [2023-08-30 11:32:25,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:32:25,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778457252] [2023-08-30 11:32:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:25,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:32:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:32:25,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:32:25,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778457252] [2023-08-30 11:32:25,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778457252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:32:25,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:32:25,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:32:25,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033587082] [2023-08-30 11:32:25,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:32:25,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:32:25,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:25,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:32:25,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:32:25,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1030 [2023-08-30 11:32:25,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 110 transitions, 779 flow. Second operand has 3 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:25,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:25,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1030 [2023-08-30 11:32:25,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:37,248 INFO L130 PetriNetUnfolder]: 73703/100223 cut-off events. [2023-08-30 11:32:37,248 INFO L131 PetriNetUnfolder]: For 121074/121507 co-relation queries the response was YES. [2023-08-30 11:32:37,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293643 conditions, 100223 events. 73703/100223 cut-off events. For 121074/121507 co-relation queries the response was YES. Maximal size of possible extension queue 8377. Compared 764697 event pairs, 29379 based on Foata normal form. 428/48816 useless extension candidates. Maximal degree in co-relation 293612. Up to 64162 conditions per place. [2023-08-30 11:32:37,942 INFO L137 encePairwiseOnDemand]: 1027/1030 looper letters, 129 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2023-08-30 11:32:37,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 139 transitions, 1171 flow [2023-08-30 11:32:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:32:37,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:32:37,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1343 transitions. [2023-08-30 11:32:37,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43462783171521036 [2023-08-30 11:32:37,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1343 transitions. [2023-08-30 11:32:37,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1343 transitions. [2023-08-30 11:32:37,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:37,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1343 transitions. [2023-08-30 11:32:37,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:37,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:37,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:37,948 INFO L175 Difference]: Start difference. First operand has 99 places, 110 transitions, 779 flow. Second operand 3 states and 1343 transitions. [2023-08-30 11:32:37,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 139 transitions, 1171 flow [2023-08-30 11:32:38,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 139 transitions, 1169 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:32:38,243 INFO L231 Difference]: Finished difference. Result has 100 places, 109 transitions, 776 flow [2023-08-30 11:32:38,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=776, PETRI_PLACES=100, PETRI_TRANSITIONS=109} [2023-08-30 11:32:38,244 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 27 predicate places. [2023-08-30 11:32:38,244 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 109 transitions, 776 flow [2023-08-30 11:32:38,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:38,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:32:38,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:38,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 11:32:38,245 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-08-30 11:32:38,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:32:38,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1627700617, now seen corresponding path program 1 times [2023-08-30 11:32:38,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:32:38,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765317649] [2023-08-30 11:32:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:38,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:32:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:32:38,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:32:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765317649] [2023-08-30 11:32:38,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765317649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:32:38,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:32:38,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:32:38,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597929970] [2023-08-30 11:32:38,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:32:38,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:32:38,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:38,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:32:38,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:32:38,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1030 [2023-08-30 11:32:38,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 109 transitions, 776 flow. Second operand has 5 states, 5 states have (on average 409.2) internal successors, (2046), 5 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:38,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:38,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1030 [2023-08-30 11:32:38,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand