./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations 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/chl-name-comparator-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:58:58,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:58:58,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:58:58,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:58:58,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:58:58,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:58:58,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:58:58,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:58:58,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:58:58,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:58:58,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:58:58,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:58:58,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:58:58,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:58:58,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:58:58,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:58:58,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:58:58,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:58:58,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:58:58,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:58:58,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:58:58,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:58:58,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:58:58,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:58:58,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:58:58,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:58:58,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:58:58,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:58:58,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:58:58,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:58:58,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:58:58,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:58:58,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:58:58,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:58:58,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:58:58,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:58:58,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:58:58,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:58:58,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:58:58,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:58:58,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:58:58,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:58:58,459 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:58:58,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:58:58,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:58:58,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:58:58,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:58:58,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:58:58,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:58:58,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:58:58,463 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:58:58,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:58:58,464 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:58:58,464 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:58:58,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:58:58,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:58:58,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:58:58,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:58:58,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:58:58,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:58:58,466 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:58:58,466 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:58:58,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:58:58,466 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:58:58,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:58:58,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:58:58,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:58:58,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:58:58,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:58:58,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:58:58,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:58:58,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:58:58,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:58:58,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:58:58,469 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:58:58,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:58:58,469 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:58:58,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:58:58,469 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:58:58,470 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:58:58,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:58:58,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:58:58,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:58:58,776 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:58:58,776 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:58:58,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2023-08-30 10:58:59,898 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:59:00,094 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:59:00,096 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2023-08-30 10:59:00,106 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b9cf2e67/0f365a6d5af64dcb9945088992cbddc9/FLAG5c20da68e [2023-08-30 10:59:00,116 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b9cf2e67/0f365a6d5af64dcb9945088992cbddc9 [2023-08-30 10:59:00,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:59:00,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:59:00,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:59:00,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:59:00,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:59:00,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae6032f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00, skipping insertion in model container [2023-08-30 10:59:00,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:59:00,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:59:00,310 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2023-08-30 10:59:00,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:59:00,340 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:59:00,380 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2023-08-30 10:59:00,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:59:00,417 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:59:00,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00 WrapperNode [2023-08-30 10:59:00,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:59:00,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:59:00,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:59:00,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:59:00,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,489 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 366 [2023-08-30 10:59:00,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:59:00,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:59:00,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:59:00,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:59:00,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,542 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:59:00,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:59:00,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:59:00,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:59:00,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00" (1/1) ... [2023-08-30 10:59:00,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:59:00,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:59:00,641 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 10:59:00,669 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 10:59:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:59:00,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:59:00,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:59:00,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:59:00,681 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 10:59:00,681 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 10:59:00,681 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 10:59:00,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 10:59:00,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 10:59:00,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 10:59:00,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:59:00,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:59:00,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:59:00,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:59:00,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:59:00,684 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 10:59:00,846 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:59:00,848 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:59:01,228 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:59:01,241 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:59:01,241 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 10:59:01,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:59:01 BoogieIcfgContainer [2023-08-30 10:59:01,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:59:01,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:59:01,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:59:01,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:59:01,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:59:00" (1/3) ... [2023-08-30 10:59:01,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb9d7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:59:01, skipping insertion in model container [2023-08-30 10:59:01,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:00" (2/3) ... [2023-08-30 10:59:01,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb9d7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:59:01, skipping insertion in model container [2023-08-30 10:59:01,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:59:01" (3/3) ... [2023-08-30 10:59:01,251 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2023-08-30 10:59:01,257 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:59:01,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:59:01,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-30 10:59:01,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:59:01,429 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:59:01,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 440 transitions, 904 flow [2023-08-30 10:59:01,675 INFO L130 PetriNetUnfolder]: 32/437 cut-off events. [2023-08-30 10:59:01,675 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:59:01,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 437 events. 32/437 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1255 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 324. Up to 2 conditions per place. [2023-08-30 10:59:01,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 418 places, 440 transitions, 904 flow [2023-08-30 10:59:01,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 419 transitions, 853 flow [2023-08-30 10:59:01,705 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:59:01,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 398 places, 419 transitions, 853 flow [2023-08-30 10:59:01,723 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 398 places, 419 transitions, 853 flow [2023-08-30 10:59:01,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 419 transitions, 853 flow [2023-08-30 10:59:01,805 INFO L130 PetriNetUnfolder]: 31/419 cut-off events. [2023-08-30 10:59:01,806 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:59:01,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 419 events. 31/419 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 324. Up to 2 conditions per place. [2023-08-30 10:59:01,834 INFO L119 LiptonReduction]: Number of co-enabled transitions 53934 [2023-08-30 10:59:20,825 INFO L134 LiptonReduction]: Checked pairs total: 50359 [2023-08-30 10:59:20,826 INFO L136 LiptonReduction]: Total number of compositions: 535 [2023-08-30 10:59:20,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:59:20,845 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;@70c1b05d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:59:20,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-08-30 10:59:20,848 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 10:59:20,848 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:59:20,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:20,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:59:20,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:20,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:20,854 INFO L85 PathProgramCache]: Analyzing trace with hash 58799, now seen corresponding path program 1 times [2023-08-30 10:59:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:20,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619125158] [2023-08-30 10:59:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:20,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:21,147 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 10:59:21,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:21,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619125158] [2023-08-30 10:59:21,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619125158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:21,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:59:21,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:59:21,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34134087] [2023-08-30 10:59:21,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:21,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:21,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:21,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:59:21,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 975 [2023-08-30 10:59:21,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:21,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:21,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 975 [2023-08-30 10:59:21,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:22,612 INFO L130 PetriNetUnfolder]: 6211/8841 cut-off events. [2023-08-30 10:59:22,613 INFO L131 PetriNetUnfolder]: For 444/444 co-relation queries the response was YES. [2023-08-30 10:59:22,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 8841 events. 6211/8841 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 46399 event pairs, 5306 based on Foata normal form. 0/3413 useless extension candidates. Maximal degree in co-relation 8144. Up to 4423 conditions per place. [2023-08-30 10:59:22,658 INFO L137 encePairwiseOnDemand]: 962/975 looper letters, 73 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-30 10:59:22,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 75 transitions, 330 flow [2023-08-30 10:59:22,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1328 transitions. [2023-08-30 10:59:22,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454017094017094 [2023-08-30 10:59:22,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1328 transitions. [2023-08-30 10:59:22,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1328 transitions. [2023-08-30 10:59:22,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:22,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1328 transitions. [2023-08-30 10:59:22,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 442.6666666666667) internal successors, (1328), 3 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:22,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:22,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:22,706 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 1328 transitions. [2023-08-30 10:59:22,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 75 transitions, 330 flow [2023-08-30 10:59:22,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 75 transitions, 312 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:59:22,726 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 98 flow [2023-08-30 10:59:22,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-30 10:59:22,731 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-08-30 10:59:22,732 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 98 flow [2023-08-30 10:59:22,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:22,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:22,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:59:22,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:59:22,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:22,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:22,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1824464, now seen corresponding path program 1 times [2023-08-30 10:59:22,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:22,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676249205] [2023-08-30 10:59:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:22,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:22,874 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 10:59:22,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:22,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676249205] [2023-08-30 10:59:22,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676249205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:59:22,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324347265] [2023-08-30 10:59:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:22,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:22,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:59:22,881 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 10:59:22,893 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 10:59:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:22,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:59:23,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:59:23,054 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 10:59:23,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:59:23,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324347265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:23,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:59:23,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 10:59:23,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100572243] [2023-08-30 10:59:23,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:23,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:59:23,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:23,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:59:23,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:59:23,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 975 [2023-08-30 10:59:23,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 411.75) internal successors, (1647), 4 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:23,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:23,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 975 [2023-08-30 10:59:23,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:24,438 INFO L130 PetriNetUnfolder]: 6211/8840 cut-off events. [2023-08-30 10:59:24,438 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 10:59:24,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17963 conditions, 8840 events. 6211/8840 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 46916 event pairs, 5306 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 8979. Up to 4421 conditions per place. [2023-08-30 10:59:24,479 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 72 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 10:59:24,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 318 flow [2023-08-30 10:59:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:59:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:59:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1719 transitions. [2023-08-30 10:59:24,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44076923076923075 [2023-08-30 10:59:24,484 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1719 transitions. [2023-08-30 10:59:24,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1719 transitions. [2023-08-30 10:59:24,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:24,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1719 transitions. [2023-08-30 10:59:24,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 429.75) internal successors, (1719), 4 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:24,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:24,496 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:24,497 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 98 flow. Second operand 4 states and 1719 transitions. [2023-08-30 10:59:24,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 318 flow [2023-08-30 10:59:24,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:24,498 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 96 flow [2023-08-30 10:59:24,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-30 10:59:24,499 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-08-30 10:59:24,500 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 96 flow [2023-08-30 10:59:24,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 411.75) internal successors, (1647), 4 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:24,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:24,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:59:24,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:59:24,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:24,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:24,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:24,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1824466, now seen corresponding path program 1 times [2023-08-30 10:59:24,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:24,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159885777] [2023-08-30 10:59:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:24,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:24,779 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 10:59:24,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:24,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159885777] [2023-08-30 10:59:24,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159885777] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:59:24,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924725643] [2023-08-30 10:59:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:24,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:24,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:59:24,781 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 10:59:24,806 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 10:59:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:24,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:59:24,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:59:24,890 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 10:59:24,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:59:24,909 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 10:59:24,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924725643] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:59:24,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:59:24,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 10:59:24,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278935196] [2023-08-30 10:59:24,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:59:24,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:59:24,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:59:24,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:59:24,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 975 [2023-08-30 10:59:24,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 412.14285714285717) internal successors, (2885), 7 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:24,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:24,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 975 [2023-08-30 10:59:24,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:27,688 INFO L130 PetriNetUnfolder]: 15526/22097 cut-off events. [2023-08-30 10:59:27,688 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-08-30 10:59:27,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44892 conditions, 22097 events. 15526/22097 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 132129 event pairs, 13265 based on Foata normal form. 0/8536 useless extension candidates. Maximal degree in co-relation 35907. Up to 4422 conditions per place. [2023-08-30 10:59:27,787 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 177 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2023-08-30 10:59:27,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 182 transitions, 776 flow [2023-08-30 10:59:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:59:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:59:27,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2651 transitions. [2023-08-30 10:59:27,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45316239316239315 [2023-08-30 10:59:27,795 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2651 transitions. [2023-08-30 10:59:27,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2651 transitions. [2023-08-30 10:59:27,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:27,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2651 transitions. [2023-08-30 10:59:27,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 441.8333333333333) internal successors, (2651), 6 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:27,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 975.0) internal successors, (6825), 7 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:27,815 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 975.0) internal successors, (6825), 7 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:27,815 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 96 flow. Second operand 6 states and 2651 transitions. [2023-08-30 10:59:27,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 182 transitions, 776 flow [2023-08-30 10:59:27,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 182 transitions, 773 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:59:27,818 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 129 flow [2023-08-30 10:59:27,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-08-30 10:59:27,819 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 10:59:27,819 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 129 flow [2023-08-30 10:59:27,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 412.14285714285717) internal successors, (2885), 7 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:27,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:27,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:59:27,831 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 10:59:28,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 10:59:28,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:28,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:28,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1751412444, now seen corresponding path program 1 times [2023-08-30 10:59:28,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:28,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473712541] [2023-08-30 10:59:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:28,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:28,118 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 10:59:28,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:28,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473712541] [2023-08-30 10:59:28,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473712541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:28,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:59:28,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:59:28,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856558073] [2023-08-30 10:59:28,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:28,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:28,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:28,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:28,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:59:28,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 10:59:28,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:28,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:28,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 10:59:28,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:29,903 INFO L130 PetriNetUnfolder]: 12421/17679 cut-off events. [2023-08-30 10:59:29,904 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2023-08-30 10:59:29,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35933 conditions, 17679 events. 12421/17679 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 103390 event pairs, 10612 based on Foata normal form. 1/6832 useless extension candidates. Maximal degree in co-relation 35917. Up to 17679 conditions per place. [2023-08-30 10:59:29,980 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 40 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 10:59:29,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 213 flow [2023-08-30 10:59:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1270 transitions. [2023-08-30 10:59:29,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341880341880342 [2023-08-30 10:59:29,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1270 transitions. [2023-08-30 10:59:29,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1270 transitions. [2023-08-30 10:59:29,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:29,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1270 transitions. [2023-08-30 10:59:29,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:29,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:29,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:29,995 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 129 flow. Second operand 3 states and 1270 transitions. [2023-08-30 10:59:29,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 213 flow [2023-08-30 10:59:29,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 203 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:29,996 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 127 flow [2023-08-30 10:59:29,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-08-30 10:59:29,997 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-08-30 10:59:29,998 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 127 flow [2023-08-30 10:59:29,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:29,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:29,999 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 10:59:29,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:59:29,999 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:29,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1480223121, now seen corresponding path program 2 times [2023-08-30 10:59:30,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:30,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811281988] [2023-08-30 10:59:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:30,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:59:30,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:30,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811281988] [2023-08-30 10:59:30,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811281988] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:59:30,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380371123] [2023-08-30 10:59:30,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:59:30,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:30,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:59:30,125 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 10:59:30,153 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 10:59:30,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:59:30,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:59:30,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 10:59:30,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:59:30,246 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 10:59:30,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:59:30,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380371123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:30,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:59:30,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 10:59:30,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718284067] [2023-08-30 10:59:30,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:30,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:30,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:30,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:30,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:59:30,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 10:59:30,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:30,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:30,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 10:59:30,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:32,010 INFO L130 PetriNetUnfolder]: 12421/17678 cut-off events. [2023-08-30 10:59:32,011 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2023-08-30 10:59:32,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35931 conditions, 17678 events. 12421/17678 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 103395 event pairs, 10612 based on Foata normal form. 1/6831 useless extension candidates. Maximal degree in co-relation 35912. Up to 17678 conditions per place. [2023-08-30 10:59:32,080 INFO L137 encePairwiseOnDemand]: 973/975 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 10:59:32,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 41 transitions, 199 flow [2023-08-30 10:59:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1274 transitions. [2023-08-30 10:59:32,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43555555555555553 [2023-08-30 10:59:32,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1274 transitions. [2023-08-30 10:59:32,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1274 transitions. [2023-08-30 10:59:32,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:32,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1274 transitions. [2023-08-30 10:59:32,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:32,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:32,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:32,099 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 127 flow. Second operand 3 states and 1274 transitions. [2023-08-30 10:59:32,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 41 transitions, 199 flow [2023-08-30 10:59:32,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 185 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 10:59:32,101 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 105 flow [2023-08-30 10:59:32,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-08-30 10:59:32,103 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-08-30 10:59:32,103 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 105 flow [2023-08-30 10:59:32,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:32,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:32,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:59:32,111 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 10:59:32,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:32,309 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:32,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:32,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1482176863, now seen corresponding path program 1 times [2023-08-30 10:59:32,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:32,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233666994] [2023-08-30 10:59:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:32,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:32,378 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 10:59:32,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:32,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233666994] [2023-08-30 10:59:32,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233666994] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:59:32,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298533099] [2023-08-30 10:59:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:32,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:32,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:59:32,381 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 10:59:32,383 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 10:59:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:32,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 10:59:32,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:59:32,519 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 10:59:32,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:59:32,532 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 10:59:32,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298533099] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:59:32,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:59:32,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:59:32,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957910884] [2023-08-30 10:59:32,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:59:32,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:59:32,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:59:32,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:59:32,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 975 [2023-08-30 10:59:32,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 409.7142857142857) internal successors, (2868), 7 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:32,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:32,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 975 [2023-08-30 10:59:32,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:33,590 INFO L130 PetriNetUnfolder]: 6211/8842 cut-off events. [2023-08-30 10:59:33,590 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 10:59:33,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17973 conditions, 8842 events. 6211/8842 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 47095 event pairs, 5306 based on Foata normal form. 2/3420 useless extension candidates. Maximal degree in co-relation 17964. Up to 8840 conditions per place. [2023-08-30 10:59:33,630 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 37 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-30 10:59:33,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 187 flow [2023-08-30 10:59:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:59:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:59:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2082 transitions. [2023-08-30 10:59:33,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270769230769231 [2023-08-30 10:59:33,637 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2082 transitions. [2023-08-30 10:59:33,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2082 transitions. [2023-08-30 10:59:33,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:33,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2082 transitions. [2023-08-30 10:59:33,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 416.4) internal successors, (2082), 5 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:33,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:33,650 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:33,650 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 105 flow. Second operand 5 states and 2082 transitions. [2023-08-30 10:59:33,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 187 flow [2023-08-30 10:59:33,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 182 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:33,652 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 116 flow [2023-08-30 10:59:33,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-30 10:59:33,653 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-08-30 10:59:33,653 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 116 flow [2023-08-30 10:59:33,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 409.7142857142857) internal successors, (2868), 7 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:33,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:33,654 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-08-30 10:59:33,668 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 10:59:33,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:33,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:33,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:33,862 INFO L85 PathProgramCache]: Analyzing trace with hash -862143743, now seen corresponding path program 2 times [2023-08-30 10:59:33,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:33,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850413286] [2023-08-30 10:59:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:33,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:33,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:33,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850413286] [2023-08-30 10:59:33,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850413286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:33,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:59:33,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:59:33,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246798429] [2023-08-30 10:59:33,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:33,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:33,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:33,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:33,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:59:33,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 10:59:33,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:33,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:33,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 10:59:33,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:34,669 INFO L130 PetriNetUnfolder]: 4823/6878 cut-off events. [2023-08-30 10:59:34,669 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 10:59:34,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13993 conditions, 6878 events. 4823/6878 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 35106 event pairs, 4054 based on Foata normal form. 0/2810 useless extension candidates. Maximal degree in co-relation 13981. Up to 6878 conditions per place. [2023-08-30 10:59:34,685 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 10:59:34,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 190 flow [2023-08-30 10:59:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1273 transitions. [2023-08-30 10:59:34,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4352136752136752 [2023-08-30 10:59:34,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1273 transitions. [2023-08-30 10:59:34,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1273 transitions. [2023-08-30 10:59:34,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:34,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1273 transitions. [2023-08-30 10:59:34,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:34,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:34,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:34,698 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 116 flow. Second operand 3 states and 1273 transitions. [2023-08-30 10:59:34,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 190 flow [2023-08-30 10:59:34,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 39 transitions, 182 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 10:59:34,699 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 106 flow [2023-08-30 10:59:34,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-08-30 10:59:34,700 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-08-30 10:59:34,700 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 106 flow [2023-08-30 10:59:34,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:34,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:34,701 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-08-30 10:59:34,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:59:34,701 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:34,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash -862143740, now seen corresponding path program 1 times [2023-08-30 10:59:34,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:34,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643039947] [2023-08-30 10:59:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:34,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:34,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:34,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643039947] [2023-08-30 10:59:34,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643039947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:34,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:59:34,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:59:34,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016569331] [2023-08-30 10:59:34,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:34,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:34,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:34,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:34,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:59:34,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 10:59:34,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:34,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:34,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 10:59:34,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:35,658 INFO L130 PetriNetUnfolder]: 6543/9366 cut-off events. [2023-08-30 10:59:35,658 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 10:59:35,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19026 conditions, 9366 events. 6543/9366 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 51379 event pairs, 4054 based on Foata normal form. 0/3994 useless extension candidates. Maximal degree in co-relation 19014. Up to 6879 conditions per place. [2023-08-30 10:59:35,686 INFO L137 encePairwiseOnDemand]: 969/975 looper letters, 63 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-30 10:59:35,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 293 flow [2023-08-30 10:59:35,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:35,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1295 transitions. [2023-08-30 10:59:35,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427350427350427 [2023-08-30 10:59:35,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1295 transitions. [2023-08-30 10:59:35,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1295 transitions. [2023-08-30 10:59:35,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:35,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1295 transitions. [2023-08-30 10:59:35,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 431.6666666666667) internal successors, (1295), 3 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:35,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:35,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:35,697 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 106 flow. Second operand 3 states and 1295 transitions. [2023-08-30 10:59:35,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 293 flow [2023-08-30 10:59:35,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:35,699 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 123 flow [2023-08-30 10:59:35,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-30 10:59:35,699 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 10:59:35,699 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 123 flow [2023-08-30 10:59:35,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:35,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:35,700 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 10:59:35,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:59:35,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:35,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:35,701 INFO L85 PathProgramCache]: Analyzing trace with hash -956650431, now seen corresponding path program 1 times [2023-08-30 10:59:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:35,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370095955] [2023-08-30 10:59:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:35,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:35,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:35,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370095955] [2023-08-30 10:59:35,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370095955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:35,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:59:35,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:59:35,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876387977] [2023-08-30 10:59:35,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:35,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:35,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:35,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:35,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:59:35,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 10:59:35,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 412.3333333333333) internal successors, (1237), 3 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:35,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:35,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 10:59:35,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:36,743 INFO L130 PetriNetUnfolder]: 5923/8490 cut-off events. [2023-08-30 10:59:36,744 INFO L131 PetriNetUnfolder]: For 1444/1444 co-relation queries the response was YES. [2023-08-30 10:59:36,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19037 conditions, 8490 events. 5923/8490 cut-off events. For 1444/1444 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 44694 event pairs, 5026 based on Foata normal form. 0/4234 useless extension candidates. Maximal degree in co-relation 19024. Up to 8490 conditions per place. [2023-08-30 10:59:36,776 INFO L137 encePairwiseOnDemand]: 973/975 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 10:59:36,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 197 flow [2023-08-30 10:59:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:36,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1265 transitions. [2023-08-30 10:59:36,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324786324786325 [2023-08-30 10:59:36,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1265 transitions. [2023-08-30 10:59:36,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1265 transitions. [2023-08-30 10:59:36,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:36,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1265 transitions. [2023-08-30 10:59:36,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.6666666666667) internal successors, (1265), 3 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:36,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:36,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:36,787 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 123 flow. Second operand 3 states and 1265 transitions. [2023-08-30 10:59:36,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 197 flow [2023-08-30 10:59:36,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:36,789 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 119 flow [2023-08-30 10:59:36,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-08-30 10:59:36,790 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 10:59:36,790 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 119 flow [2023-08-30 10:59:36,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.3333333333333) internal successors, (1237), 3 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:36,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:36,791 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 10:59:36,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:59:36,791 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:36,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:36,792 INFO L85 PathProgramCache]: Analyzing trace with hash -956650378, now seen corresponding path program 1 times [2023-08-30 10:59:36,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:36,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523085346] [2023-08-30 10:59:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:36,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:36,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523085346] [2023-08-30 10:59:36,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523085346] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:59:36,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543138762] [2023-08-30 10:59:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:36,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:36,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:59:36,855 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 10:59:36,882 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 10:59:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:36,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 10:59:36,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:59:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 10:59:36,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:59:36,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543138762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:36,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:59:36,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 10:59:36,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338672380] [2023-08-30 10:59:36,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:36,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:36,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:36,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:36,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:59:37,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 10:59:37,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:37,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:37,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 10:59:37,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:37,654 INFO L130 PetriNetUnfolder]: 4693/6744 cut-off events. [2023-08-30 10:59:37,654 INFO L131 PetriNetUnfolder]: For 822/822 co-relation queries the response was YES. [2023-08-30 10:59:37,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14864 conditions, 6744 events. 4693/6744 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 34195 event pairs, 3924 based on Foata normal form. 0/3588 useless extension candidates. Maximal degree in co-relation 14850. Up to 6744 conditions per place. [2023-08-30 10:59:37,674 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 36 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-30 10:59:37,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 37 transitions, 187 flow [2023-08-30 10:59:37,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:37,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:37,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1270 transitions. [2023-08-30 10:59:37,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341880341880342 [2023-08-30 10:59:37,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1270 transitions. [2023-08-30 10:59:37,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1270 transitions. [2023-08-30 10:59:37,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:37,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1270 transitions. [2023-08-30 10:59:37,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:37,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:37,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:37,687 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 119 flow. Second operand 3 states and 1270 transitions. [2023-08-30 10:59:37,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 37 transitions, 187 flow [2023-08-30 10:59:37,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 37 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:37,688 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 114 flow [2023-08-30 10:59:37,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-30 10:59:37,694 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-08-30 10:59:37,694 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 114 flow [2023-08-30 10:59:37,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:37,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:37,695 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 10:59:37,703 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 10:59:37,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 10:59:37,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:37,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:37,901 INFO L85 PathProgramCache]: Analyzing trace with hash -956650376, now seen corresponding path program 1 times [2023-08-30 10:59:37,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:37,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055481985] [2023-08-30 10:59:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:37,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:37,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055481985] [2023-08-30 10:59:37,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055481985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:59:37,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006731221] [2023-08-30 10:59:37,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:37,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:37,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:59:37,959 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 10:59:37,961 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 10:59:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:38,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:59:38,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:59:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 10:59:38,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:59:38,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006731221] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:38,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:59:38,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 10:59:38,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629634092] [2023-08-30 10:59:38,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:38,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:38,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:38,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:38,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:59:38,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 10:59:38,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:38,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:38,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 10:59:38,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:38,561 INFO L130 PetriNetUnfolder]: 3563/5138 cut-off events. [2023-08-30 10:59:38,561 INFO L131 PetriNetUnfolder]: For 706/706 co-relation queries the response was YES. [2023-08-30 10:59:38,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11243 conditions, 5138 events. 3563/5138 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 24764 event pairs, 2918 based on Foata normal form. 0/2950 useless extension candidates. Maximal degree in co-relation 11228. Up to 5138 conditions per place. [2023-08-30 10:59:38,575 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-30 10:59:38,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 35 transitions, 178 flow [2023-08-30 10:59:38,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:38,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1268 transitions. [2023-08-30 10:59:38,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335042735042735 [2023-08-30 10:59:38,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1268 transitions. [2023-08-30 10:59:38,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1268 transitions. [2023-08-30 10:59:38,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:38,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1268 transitions. [2023-08-30 10:59:38,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.6666666666667) internal successors, (1268), 3 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:38,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:38,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:38,585 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 114 flow. Second operand 3 states and 1268 transitions. [2023-08-30 10:59:38,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 35 transitions, 178 flow [2023-08-30 10:59:38,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:38,587 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 109 flow [2023-08-30 10:59:38,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-08-30 10:59:38,588 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-08-30 10:59:38,588 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 109 flow [2023-08-30 10:59:38,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:38,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:38,588 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 10:59:38,596 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 10:59:38,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:38,796 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:38,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:38,796 INFO L85 PathProgramCache]: Analyzing trace with hash -956650375, now seen corresponding path program 1 times [2023-08-30 10:59:38,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:38,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643092967] [2023-08-30 10:59:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:38,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:38,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:38,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643092967] [2023-08-30 10:59:38,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643092967] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:59:38,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249950524] [2023-08-30 10:59:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:38,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:38,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:59:38,888 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 10:59:38,891 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 10:59:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:39,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:59:39,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:59:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:39,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:59:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:39,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249950524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:59:39,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:59:39,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 10:59:39,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120087863] [2023-08-30 10:59:39,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:59:39,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:59:39,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:39,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:59:39,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:59:39,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 10:59:39,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:39,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:39,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 10:59:39,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:40,057 INFO L130 PetriNetUnfolder]: 6179/8930 cut-off events. [2023-08-30 10:59:40,057 INFO L131 PetriNetUnfolder]: For 454/454 co-relation queries the response was YES. [2023-08-30 10:59:40,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19324 conditions, 8930 events. 6179/8930 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 49607 event pairs, 1778 based on Foata normal form. 0/5246 useless extension candidates. Maximal degree in co-relation 19308. Up to 3243 conditions per place. [2023-08-30 10:59:40,100 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 102 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2023-08-30 10:59:40,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 106 transitions, 482 flow [2023-08-30 10:59:40,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:59:40,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:59:40,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2154 transitions. [2023-08-30 10:59:40,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44184615384615383 [2023-08-30 10:59:40,105 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2154 transitions. [2023-08-30 10:59:40,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2154 transitions. [2023-08-30 10:59:40,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:40,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2154 transitions. [2023-08-30 10:59:40,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 430.8) internal successors, (2154), 5 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:40,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:40,115 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:40,115 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 109 flow. Second operand 5 states and 2154 transitions. [2023-08-30 10:59:40,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 106 transitions, 482 flow [2023-08-30 10:59:40,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 106 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:40,118 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 134 flow [2023-08-30 10:59:40,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-08-30 10:59:40,118 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-08-30 10:59:40,118 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 134 flow [2023-08-30 10:59:40,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:40,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:40,119 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:59:40,127 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 10:59:40,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:40,324 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:40,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:40,325 INFO L85 PathProgramCache]: Analyzing trace with hash 411238806, now seen corresponding path program 1 times [2023-08-30 10:59:40,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:40,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851925788] [2023-08-30 10:59:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:40,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:40,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:40,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851925788] [2023-08-30 10:59:40,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851925788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:40,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:59:40,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:59:40,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451142302] [2023-08-30 10:59:40,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:40,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:40,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:40,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:40,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:59:40,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 10:59:40,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:40,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:40,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 10:59:40,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:41,187 INFO L130 PetriNetUnfolder]: 4499/6522 cut-off events. [2023-08-30 10:59:41,187 INFO L131 PetriNetUnfolder]: For 3888/3888 co-relation queries the response was YES. [2023-08-30 10:59:41,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15454 conditions, 6522 events. 4499/6522 cut-off events. For 3888/3888 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 32558 event pairs, 3682 based on Foata normal form. 0/4210 useless extension candidates. Maximal degree in co-relation 15436. Up to 6522 conditions per place. [2023-08-30 10:59:41,208 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-30 10:59:41,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 35 transitions, 200 flow [2023-08-30 10:59:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1266 transitions. [2023-08-30 10:59:41,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328205128205128 [2023-08-30 10:59:41,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1266 transitions. [2023-08-30 10:59:41,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1266 transitions. [2023-08-30 10:59:41,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:41,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1266 transitions. [2023-08-30 10:59:41,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:41,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:41,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:41,217 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 134 flow. Second operand 3 states and 1266 transitions. [2023-08-30 10:59:41,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 35 transitions, 200 flow [2023-08-30 10:59:41,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 35 transitions, 194 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:41,219 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 126 flow [2023-08-30 10:59:41,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2023-08-30 10:59:41,220 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-08-30 10:59:41,220 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 126 flow [2023-08-30 10:59:41,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:41,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:41,220 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:59:41,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:59:41,221 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:41,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:41,221 INFO L85 PathProgramCache]: Analyzing trace with hash 411238849, now seen corresponding path program 1 times [2023-08-30 10:59:41,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:41,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075361286] [2023-08-30 10:59:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:41,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:41,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:41,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075361286] [2023-08-30 10:59:41,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075361286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:41,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:59:41,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:59:41,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814586428] [2023-08-30 10:59:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:41,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:41,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:41,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:59:41,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 10:59:41,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:41,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:41,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 10:59:41,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:42,255 INFO L130 PetriNetUnfolder]: 6339/9210 cut-off events. [2023-08-30 10:59:42,255 INFO L131 PetriNetUnfolder]: For 3938/3938 co-relation queries the response was YES. [2023-08-30 10:59:42,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21152 conditions, 9210 events. 6339/9210 cut-off events. For 3938/3938 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 50420 event pairs, 3682 based on Foata normal form. 0/6010 useless extension candidates. Maximal degree in co-relation 21132. Up to 6523 conditions per place. [2023-08-30 10:59:42,291 INFO L137 encePairwiseOnDemand]: 971/975 looper letters, 55 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 10:59:42,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 312 flow [2023-08-30 10:59:42,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1279 transitions. [2023-08-30 10:59:42,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4372649572649573 [2023-08-30 10:59:42,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1279 transitions. [2023-08-30 10:59:42,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1279 transitions. [2023-08-30 10:59:42,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:42,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1279 transitions. [2023-08-30 10:59:42,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 426.3333333333333) internal successors, (1279), 3 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:42,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:42,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:42,300 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 126 flow. Second operand 3 states and 1279 transitions. [2023-08-30 10:59:42,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 312 flow [2023-08-30 10:59:42,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:42,304 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 139 flow [2023-08-30 10:59:42,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-08-30 10:59:42,304 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-08-30 10:59:42,304 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 139 flow [2023-08-30 10:59:42,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:42,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:42,305 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-30 10:59:42,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 10:59:42,305 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:42,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:42,305 INFO L85 PathProgramCache]: Analyzing trace with hash -218007335, now seen corresponding path program 2 times [2023-08-30 10:59:42,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:42,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044959891] [2023-08-30 10:59:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:42,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-30 10:59:42,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:42,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044959891] [2023-08-30 10:59:42,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044959891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:42,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:59:42,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:59:42,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752910613] [2023-08-30 10:59:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:42,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:42,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:59:42,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 10:59:42,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:42,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:42,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 10:59:42,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:43,226 INFO L130 PetriNetUnfolder]: 4973/7248 cut-off events. [2023-08-30 10:59:43,226 INFO L131 PetriNetUnfolder]: For 4728/4728 co-relation queries the response was YES. [2023-08-30 10:59:43,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 7248 events. 4973/7248 cut-off events. For 4728/4728 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 36908 event pairs, 4108 based on Foata normal form. 172/5640 useless extension candidates. Maximal degree in co-relation 18102. Up to 7248 conditions per place. [2023-08-30 10:59:43,245 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-30 10:59:43,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 34 transitions, 197 flow [2023-08-30 10:59:43,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:43,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1264 transitions. [2023-08-30 10:59:43,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4321367521367521 [2023-08-30 10:59:43,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1264 transitions. [2023-08-30 10:59:43,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1264 transitions. [2023-08-30 10:59:43,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:43,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1264 transitions. [2023-08-30 10:59:43,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:43,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:43,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:43,253 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 139 flow. Second operand 3 states and 1264 transitions. [2023-08-30 10:59:43,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 34 transitions, 197 flow [2023-08-30 10:59:43,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 34 transitions, 187 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 10:59:43,257 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 121 flow [2023-08-30 10:59:43,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2023-08-30 10:59:43,257 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 10:59:43,257 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 121 flow [2023-08-30 10:59:43,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:43,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:43,258 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:59:43,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 10:59:43,258 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:43,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:43,259 INFO L85 PathProgramCache]: Analyzing trace with hash -136496192, now seen corresponding path program 1 times [2023-08-30 10:59:43,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:43,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494479248] [2023-08-30 10:59:43,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:43,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:43,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:43,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494479248] [2023-08-30 10:59:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494479248] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:59:43,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318696489] [2023-08-30 10:59:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:43,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:43,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:59:43,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:59:43,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 10:59:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:43,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:59:43,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:59:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 10:59:43,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:59:43,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318696489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:43,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:59:43,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 10:59:43,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134259850] [2023-08-30 10:59:43,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:43,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:43,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:43,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:43,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:59:43,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 10:59:43,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 415.0) internal successors, (1245), 3 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:43,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:43,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 10:59:43,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:44,037 INFO L130 PetriNetUnfolder]: 3527/5162 cut-off events. [2023-08-30 10:59:44,037 INFO L131 PetriNetUnfolder]: For 1354/1354 co-relation queries the response was YES. [2023-08-30 10:59:44,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12185 conditions, 5162 events. 3527/5162 cut-off events. For 1354/1354 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24842 event pairs, 2814 based on Foata normal form. 0/4230 useless extension candidates. Maximal degree in co-relation 12166. Up to 5162 conditions per place. [2023-08-30 10:59:44,052 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-30 10:59:44,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 32 transitions, 179 flow [2023-08-30 10:59:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:44,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1262 transitions. [2023-08-30 10:59:44,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43145299145299143 [2023-08-30 10:59:44,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1262 transitions. [2023-08-30 10:59:44,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1262 transitions. [2023-08-30 10:59:44,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:44,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1262 transitions. [2023-08-30 10:59:44,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:44,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:44,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:44,060 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 121 flow. Second operand 3 states and 1262 transitions. [2023-08-30 10:59:44,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 32 transitions, 179 flow [2023-08-30 10:59:44,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 32 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:44,062 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 116 flow [2023-08-30 10:59:44,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2023-08-30 10:59:44,062 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-08-30 10:59:44,063 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 116 flow [2023-08-30 10:59:44,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 415.0) internal successors, (1245), 3 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:44,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:44,063 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:59:44,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 10:59:44,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 10:59:44,268 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:44,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:44,269 INFO L85 PathProgramCache]: Analyzing trace with hash -136496207, now seen corresponding path program 1 times [2023-08-30 10:59:44,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:44,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230154807] [2023-08-30 10:59:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:44,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:44,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230154807] [2023-08-30 10:59:44,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230154807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:59:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039123071] [2023-08-30 10:59:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:44,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:44,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:59:44,317 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:59:44,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 10:59:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:44,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:59:44,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:59:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:44,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:59:44,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039123071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:44,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:59:44,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 10:59:44,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88831518] [2023-08-30 10:59:44,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:44,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:59:44,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:44,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:59:44,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:59:44,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 10:59:44,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 412.25) internal successors, (1649), 4 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:44,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:44,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 10:59:44,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:44,979 INFO L130 PetriNetUnfolder]: 2967/4358 cut-off events. [2023-08-30 10:59:44,979 INFO L131 PetriNetUnfolder]: For 880/880 co-relation queries the response was YES. [2023-08-30 10:59:44,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10198 conditions, 4358 events. 2967/4358 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 22034 event pairs, 278 based on Foata normal form. 0/3774 useless extension candidates. Maximal degree in co-relation 10178. Up to 1980 conditions per place. [2023-08-30 10:59:44,992 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 59 selfloop transitions, 2 changer transitions 3/64 dead transitions. [2023-08-30 10:59:44,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 333 flow [2023-08-30 10:59:44,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:59:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:59:44,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1692 transitions. [2023-08-30 10:59:44,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338461538461538 [2023-08-30 10:59:44,995 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1692 transitions. [2023-08-30 10:59:44,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1692 transitions. [2023-08-30 10:59:44,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:44,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1692 transitions. [2023-08-30 10:59:44,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:44,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:44,999 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:44,999 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 116 flow. Second operand 4 states and 1692 transitions. [2023-08-30 10:59:44,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 333 flow [2023-08-30 10:59:45,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:45,001 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 113 flow [2023-08-30 10:59:45,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2023-08-30 10:59:45,001 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 10:59:45,002 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 113 flow [2023-08-30 10:59:45,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 412.25) internal successors, (1649), 4 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:45,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:45,002 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:59:45,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 10:59:45,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 10:59:45,208 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:45,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:45,208 INFO L85 PathProgramCache]: Analyzing trace with hash 65202430, now seen corresponding path program 1 times [2023-08-30 10:59:45,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:45,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211161790] [2023-08-30 10:59:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:45,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:45,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:45,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211161790] [2023-08-30 10:59:45,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211161790] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:45,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:59:45,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:59:45,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751017998] [2023-08-30 10:59:45,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:45,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:59:45,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:45,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:59:45,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:59:45,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 10:59:45,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:45,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:45,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 10:59:45,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:45,707 INFO L130 PetriNetUnfolder]: 2967/4358 cut-off events. [2023-08-30 10:59:45,708 INFO L131 PetriNetUnfolder]: For 2162/2162 co-relation queries the response was YES. [2023-08-30 10:59:45,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10686 conditions, 4358 events. 2967/4358 cut-off events. For 2162/2162 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 20793 event pairs, 1756 based on Foata normal form. 0/4066 useless extension candidates. Maximal degree in co-relation 10666. Up to 3425 conditions per place. [2023-08-30 10:59:45,722 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 44 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-30 10:59:45,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 259 flow [2023-08-30 10:59:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:59:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:59:45,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1265 transitions. [2023-08-30 10:59:45,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324786324786325 [2023-08-30 10:59:45,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1265 transitions. [2023-08-30 10:59:45,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1265 transitions. [2023-08-30 10:59:45,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:45,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1265 transitions. [2023-08-30 10:59:45,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.6666666666667) internal successors, (1265), 3 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:45,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:45,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:45,730 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 113 flow. Second operand 3 states and 1265 transitions. [2023-08-30 10:59:45,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 259 flow [2023-08-30 10:59:45,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 253 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:59:45,732 INFO L231 Difference]: Finished difference. Result has 50 places, 31 transitions, 122 flow [2023-08-30 10:59:45,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=31} [2023-08-30 10:59:45,733 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 10:59:45,733 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 31 transitions, 122 flow [2023-08-30 10:59:45,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:45,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:59:45,733 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:59:45,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 10:59:45,734 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 10:59:45,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:59:45,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2021277161, now seen corresponding path program 1 times [2023-08-30 10:59:45,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:59:45,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696862766] [2023-08-30 10:59:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:45,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:59:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:45,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:59:45,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696862766] [2023-08-30 10:59:45,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696862766] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:59:45,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789981604] [2023-08-30 10:59:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:59:45,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:45,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:59:45,784 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:59:45,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 10:59:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:59:45,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:59:45,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:59:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:59:45,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:59:45,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789981604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:59:45,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:59:45,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 10:59:45,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037888488] [2023-08-30 10:59:45,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:59:45,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:59:45,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:59:45,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:59:45,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:59:45,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 10:59:45,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 31 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 412.75) internal successors, (1651), 4 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:45,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:59:45,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 10:59:45,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:59:46,375 INFO L130 PetriNetUnfolder]: 2325/3424 cut-off events. [2023-08-30 10:59:46,375 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-30 10:59:46,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9435 conditions, 3424 events. 2325/3424 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15811 event pairs, 616 based on Foata normal form. 0/3424 useless extension candidates. Maximal degree in co-relation 9414. Up to 1265 conditions per place. [2023-08-30 10:59:46,380 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-08-30 10:59:46,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 336 flow [2023-08-30 10:59:46,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:59:46,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:59:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1685 transitions. [2023-08-30 10:59:46,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205128205128207 [2023-08-30 10:59:46,383 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1685 transitions. [2023-08-30 10:59:46,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1685 transitions. [2023-08-30 10:59:46,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:59:46,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1685 transitions. [2023-08-30 10:59:46,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:46,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:46,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:46,388 INFO L175 Difference]: Start difference. First operand has 50 places, 31 transitions, 122 flow. Second operand 4 states and 1685 transitions. [2023-08-30 10:59:46,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 336 flow [2023-08-30 10:59:46,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 332 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:59:46,396 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-08-30 10:59:46,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-08-30 10:59:46,397 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-08-30 10:59:46,397 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-08-30 10:59:46,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 412.75) internal successors, (1651), 4 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:59:46,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 53 remaining) [2023-08-30 10:59:46,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 53 remaining) [2023-08-30 10:59:46,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 53 remaining) [2023-08-30 10:59:46,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 53 remaining) [2023-08-30 10:59:46,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 53 remaining) [2023-08-30 10:59:46,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 53 remaining) [2023-08-30 10:59:46,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 53 remaining) [2023-08-30 10:59:46,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 53 remaining) [2023-08-30 10:59:46,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 53 remaining) [2023-08-30 10:59:46,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 53 remaining) [2023-08-30 10:59:46,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 53 remaining) [2023-08-30 10:59:46,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 53 remaining) [2023-08-30 10:59:46,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 53 remaining) [2023-08-30 10:59:46,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 53 remaining) [2023-08-30 10:59:46,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 53 remaining) [2023-08-30 10:59:46,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 53 remaining) [2023-08-30 10:59:46,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 53 remaining) [2023-08-30 10:59:46,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 53 remaining) [2023-08-30 10:59:46,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 53 remaining) [2023-08-30 10:59:46,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 53 remaining) [2023-08-30 10:59:46,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 53 remaining) [2023-08-30 10:59:46,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 53 remaining) [2023-08-30 10:59:46,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 53 remaining) [2023-08-30 10:59:46,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 53 remaining) [2023-08-30 10:59:46,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 53 remaining) [2023-08-30 10:59:46,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 53 remaining) [2023-08-30 10:59:46,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 53 remaining) [2023-08-30 10:59:46,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 53 remaining) [2023-08-30 10:59:46,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 53 remaining) [2023-08-30 10:59:46,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 53 remaining) [2023-08-30 10:59:46,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 53 remaining) [2023-08-30 10:59:46,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 53 remaining) [2023-08-30 10:59:46,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 53 remaining) [2023-08-30 10:59:46,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 53 remaining) [2023-08-30 10:59:46,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 53 remaining) [2023-08-30 10:59:46,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 53 remaining) [2023-08-30 10:59:46,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 53 remaining) [2023-08-30 10:59:46,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 53 remaining) [2023-08-30 10:59:46,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 53 remaining) [2023-08-30 10:59:46,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 53 remaining) [2023-08-30 10:59:46,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 53 remaining) [2023-08-30 10:59:46,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 53 remaining) [2023-08-30 10:59:46,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 53 remaining) [2023-08-30 10:59:46,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 53 remaining) [2023-08-30 10:59:46,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 53 remaining) [2023-08-30 10:59:46,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 53 remaining) [2023-08-30 10:59:46,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 53 remaining) [2023-08-30 10:59:46,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 53 remaining) [2023-08-30 10:59:46,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 53 remaining) [2023-08-30 10:59:46,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 53 remaining) [2023-08-30 10:59:46,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 53 remaining) [2023-08-30 10:59:46,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 53 remaining) [2023-08-30 10:59:46,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 53 remaining) [2023-08-30 10:59:46,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 10:59:46,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:59:46,611 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:59:46,616 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 10:59:46,616 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 10:59:46,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:59:46 BasicIcfg [2023-08-30 10:59:46,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 10:59:46,619 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 10:59:46,619 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 10:59:46,620 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 10:59:46,620 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:59:01" (3/4) ... [2023-08-30 10:59:46,622 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 10:59:46,627 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 10:59:46,627 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 10:59:46,627 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 10:59:46,631 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-08-30 10:59:46,631 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 10:59:46,631 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 10:59:46,632 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 10:59:46,678 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 10:59:46,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 10:59:46,679 INFO L158 Benchmark]: Toolchain (without parser) took 46559.54ms. Allocated memory was 83.9MB in the beginning and 4.9GB in the end (delta: 4.8GB). Free memory was 62.1MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 388.7MB. Max. memory is 16.1GB. [2023-08-30 10:59:46,679 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 10:59:46,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.52ms. Allocated memory is still 83.9MB. Free memory was 61.9MB in the beginning and 49.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 10:59:46,680 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.72ms. Allocated memory is still 83.9MB. Free memory was 49.0MB in the beginning and 46.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 10:59:46,680 INFO L158 Benchmark]: Boogie Preprocessor took 55.40ms. Allocated memory is still 83.9MB. Free memory was 46.0MB in the beginning and 43.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 10:59:46,680 INFO L158 Benchmark]: RCFGBuilder took 696.72ms. Allocated memory is still 83.9MB. Free memory was 43.9MB in the beginning and 34.9MB in the end (delta: 9.0MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2023-08-30 10:59:46,681 INFO L158 Benchmark]: TraceAbstraction took 45373.46ms. Allocated memory was 83.9MB in the beginning and 4.9GB in the end (delta: 4.8GB). Free memory was 34.3MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. [2023-08-30 10:59:46,681 INFO L158 Benchmark]: Witness Printer took 59.31ms. Allocated memory is still 4.9GB. Free memory was 4.5GB in the beginning and 4.5GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 10:59:46,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.52ms. Allocated memory is still 83.9MB. Free memory was 61.9MB in the beginning and 49.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.72ms. Allocated memory is still 83.9MB. Free memory was 49.0MB in the beginning and 46.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.40ms. Allocated memory is still 83.9MB. Free memory was 46.0MB in the beginning and 43.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 696.72ms. Allocated memory is still 83.9MB. Free memory was 43.9MB in the beginning and 34.9MB in the end (delta: 9.0MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * TraceAbstraction took 45373.46ms. Allocated memory was 83.9MB in the beginning and 4.9GB in the end (delta: 4.8GB). Free memory was 34.3MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. * Witness Printer took 59.31ms. Allocated memory is still 4.9GB. Free memory was 4.5GB in the beginning and 4.5GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.1s, 398 PlacesBefore, 54 PlacesAfterwards, 419 TransitionsBefore, 48 TransitionsAfterwards, 53934 CoEnabledTransitionPairs, 8 FixpointIterations, 125 TrivialSequentialCompositions, 289 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 86 ConcurrentYvCompositions, 27 ChoiceCompositions, 535 TotalNumberOfCompositions, 50359 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 49677, independent: 49652, independent conditional: 0, independent unconditional: 49652, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 31740, independent: 31726, independent conditional: 0, independent unconditional: 31726, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 49677, independent: 17926, independent conditional: 0, independent unconditional: 17926, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 31740, unknown conditional: 0, unknown unconditional: 31740] , Statistics on independence cache: Total cache size (in pairs): 150, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 655 locations, 53 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 45.2s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 20.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 19.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1249 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 954 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1806 IncrementalHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 51 mSDtfsCounter, 1806 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=14, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 235 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 517 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1872 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 32 InterpolantComputations, 16 PerfectInterpolantSequences, 150/168 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 10:59:46,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE