./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:59:51,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:59:51,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:59:51,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:59:51,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:59:51,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:59:51,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:59:51,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:59:51,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:59:51,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:59:51,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:59:51,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:59:51,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:59:51,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:59:51,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:59:51,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:59:51,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:59:51,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:59:51,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:59:51,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:59:51,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:59:51,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:59:51,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:59:51,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:59:51,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:59:51,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:59:51,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:59:51,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:59:51,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:59:51,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:59:51,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:59:51,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:59:51,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:59:51,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:59:51,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:59:51,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:59:51,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:59:51,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:59:51,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:59:51,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:59:51,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:59:51,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:59:51,658 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:59:51,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:59:51,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:59:51,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:59:51,667 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:59:51,667 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:59:51,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:59:51,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:59:51,668 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:59:51,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:59:51,668 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:59:51,668 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:59:51,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:59:51,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:59:51,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:59:51,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:59:51,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:59:51,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:59:51,669 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:59:51,669 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:59:51,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:59:51,670 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:59:51,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:59:51,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:59:51,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:59:51,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:59:51,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:59:51,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:59:51,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:59:51,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:59:51,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:59:51,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:59:51,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:59:51,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:59:51,672 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:59:51,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:59:51,672 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:59:51,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:59:51,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:59:51,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:59:51,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:59:51,942 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:59:51,943 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:59:51,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-08-30 14:59:52,911 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:59:53,070 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:59:53,070 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-08-30 14:59:53,094 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/200ebba3f/d06decfd5a054c988778717d80e7d87a/FLAG50e775773 [2023-08-30 14:59:53,108 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/200ebba3f/d06decfd5a054c988778717d80e7d87a [2023-08-30 14:59:53,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:59:53,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:59:53,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:59:53,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:59:53,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:59:53,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312dc783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53, skipping insertion in model container [2023-08-30 14:59:53,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:59:53,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:59:53,302 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3292,3305] [2023-08-30 14:59:53,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:59:53,316 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:59:53,347 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3292,3305] [2023-08-30 14:59:53,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:59:53,366 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:59:53,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53 WrapperNode [2023-08-30 14:59:53,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:59:53,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:59:53,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:59:53,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:59:53,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,430 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 187 [2023-08-30 14:59:53,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:59:53,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:59:53,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:59:53,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:59:53,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,472 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:59:53,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:59:53,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:59:53,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:59:53,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53" (1/1) ... [2023-08-30 14:59:53,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:59:53,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:59:53,516 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 14:59:53,522 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 14:59:53,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:59:53,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:59:53,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:59:53,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:59:53,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:59:53,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:59:53,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:59:53,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:59:53,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 14:59:53,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 14:59:53,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:59:53,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:59:53,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:59:53,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:59:53,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:59:53,558 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 14:59:53,674 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:59:53,675 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:59:54,000 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:59:54,007 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:59:54,008 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 14:59:54,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:59:54 BoogieIcfgContainer [2023-08-30 14:59:54,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:59:54,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:59:54,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:59:54,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:59:54,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:59:53" (1/3) ... [2023-08-30 14:59:54,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de17deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:59:54, skipping insertion in model container [2023-08-30 14:59:54,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:59:53" (2/3) ... [2023-08-30 14:59:54,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de17deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:59:54, skipping insertion in model container [2023-08-30 14:59:54,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:59:54" (3/3) ... [2023-08-30 14:59:54,015 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-08-30 14:59:54,020 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:59:54,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:59:54,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 14:59:54,027 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:59:54,092 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:59:54,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 325 transitions, 674 flow [2023-08-30 14:59:54,178 INFO L130 PetriNetUnfolder]: 28/322 cut-off events. [2023-08-30 14:59:54,179 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:59:54,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 322 events. 28/322 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 543 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2023-08-30 14:59:54,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 325 transitions, 674 flow [2023-08-30 14:59:54,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 304 transitions, 623 flow [2023-08-30 14:59:54,197 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:59:54,203 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 304 transitions, 623 flow [2023-08-30 14:59:54,215 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 304 transitions, 623 flow [2023-08-30 14:59:54,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 304 transitions, 623 flow [2023-08-30 14:59:54,284 INFO L130 PetriNetUnfolder]: 27/304 cut-off events. [2023-08-30 14:59:54,284 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:59:54,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 304 events. 27/304 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 540 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2023-08-30 14:59:54,298 INFO L119 LiptonReduction]: Number of co-enabled transitions 11400 [2023-08-30 15:00:01,847 INFO L134 LiptonReduction]: Checked pairs total: 15141 [2023-08-30 15:00:01,848 INFO L136 LiptonReduction]: Total number of compositions: 327 [2023-08-30 15:00:01,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:00:01,874 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;@3b32e929, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:00:01,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-30 15:00:01,879 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:00:01,880 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:00:01,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:01,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:00:01,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 15:00:01,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:01,885 INFO L85 PathProgramCache]: Analyzing trace with hash 39699, now seen corresponding path program 1 times [2023-08-30 15:00:01,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:01,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331840457] [2023-08-30 15:00:01,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:01,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:02,124 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 15:00:02,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:02,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331840457] [2023-08-30 15:00:02,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331840457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:00:02,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:00:02,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:00:02,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934260272] [2023-08-30 15:00:02,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:00:02,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:00:02,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:02,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:00:02,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:00:02,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 652 [2023-08-30 15:00:02,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:02,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:02,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 652 [2023-08-30 15:00:02,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:03,295 INFO L130 PetriNetUnfolder]: 12137/16403 cut-off events. [2023-08-30 15:00:03,296 INFO L131 PetriNetUnfolder]: For 588/588 co-relation queries the response was YES. [2023-08-30 15:00:03,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33511 conditions, 16403 events. 12137/16403 cut-off events. For 588/588 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 82956 event pairs, 8860 based on Foata normal form. 0/8047 useless extension candidates. Maximal degree in co-relation 15562. Up to 8206 conditions per place. [2023-08-30 15:00:03,357 INFO L137 encePairwiseOnDemand]: 640/652 looper letters, 101 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2023-08-30 15:00:03,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 107 transitions, 458 flow [2023-08-30 15:00:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:00:03,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:00:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1001 transitions. [2023-08-30 15:00:03,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117586912065439 [2023-08-30 15:00:03,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1001 transitions. [2023-08-30 15:00:03,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1001 transitions. [2023-08-30 15:00:03,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:03,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1001 transitions. [2023-08-30 15:00:03,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:03,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:03,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:03,389 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1001 transitions. [2023-08-30 15:00:03,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 107 transitions, 458 flow [2023-08-30 15:00:03,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 107 transitions, 440 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:00:03,411 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 176 flow [2023-08-30 15:00:03,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2023-08-30 15:00:03,415 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-08-30 15:00:03,415 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 176 flow [2023-08-30 15:00:03,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:03,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:03,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:00:03,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:00:03,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 15:00:03,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:03,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1231866, now seen corresponding path program 1 times [2023-08-30 15:00:03,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:03,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80800581] [2023-08-30 15:00:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:03,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:03,524 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 15:00:03,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80800581] [2023-08-30 15:00:03,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80800581] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:00:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456670324] [2023-08-30 15:00:03,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:03,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:00:03,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:00:03,529 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 15:00:03,537 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 15:00:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:03,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:00:03,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:00:03,650 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 15:00:03,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:00:03,671 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 15:00:03,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456670324] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:00:03,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:00:03,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:00:03,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462986725] [2023-08-30 15:00:03,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:00:03,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:00:03,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:03,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:00:03,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:00:03,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 652 [2023-08-30 15:00:03,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:03,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:03,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 652 [2023-08-30 15:00:03,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:06,066 INFO L130 PetriNetUnfolder]: 30350/41006 cut-off events. [2023-08-30 15:00:06,066 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2023-08-30 15:00:06,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83339 conditions, 41006 events. 30350/41006 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 1704. Compared 231119 event pairs, 22150 based on Foata normal form. 0/20131 useless extension candidates. Maximal degree in co-relation 66587. Up to 8204 conditions per place. [2023-08-30 15:00:06,220 INFO L137 encePairwiseOnDemand]: 640/652 looper letters, 233 selfloop transitions, 33 changer transitions 0/266 dead transitions. [2023-08-30 15:00:06,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 266 transitions, 1200 flow [2023-08-30 15:00:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:00:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:00:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2347 transitions. [2023-08-30 15:00:06,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142418930762489 [2023-08-30 15:00:06,224 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2347 transitions. [2023-08-30 15:00:06,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2347 transitions. [2023-08-30 15:00:06,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:06,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2347 transitions. [2023-08-30 15:00:06,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.2857142857143) internal successors, (2347), 7 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:06,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 652.0) internal successors, (5216), 8 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:06,235 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 652.0) internal successors, (5216), 8 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:06,235 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 176 flow. Second operand 7 states and 2347 transitions. [2023-08-30 15:00:06,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 266 transitions, 1200 flow [2023-08-30 15:00:06,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 266 transitions, 1176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:00:06,240 INFO L231 Difference]: Finished difference. Result has 62 places, 86 transitions, 383 flow [2023-08-30 15:00:06,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=62, PETRI_TRANSITIONS=86} [2023-08-30 15:00:06,241 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-08-30 15:00:06,242 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 86 transitions, 383 flow [2023-08-30 15:00:06,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:06,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:06,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 15:00:06,252 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 15:00:06,448 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 15:00:06,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 15:00:06,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:06,449 INFO L85 PathProgramCache]: Analyzing trace with hash 38189045, now seen corresponding path program 1 times [2023-08-30 15:00:06,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:06,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892282724] [2023-08-30 15:00:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:06,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:00:06,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:06,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892282724] [2023-08-30 15:00:06,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892282724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:00:06,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:00:06,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:00:06,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327105154] [2023-08-30 15:00:06,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:00:06,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:00:06,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:06,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:00:06,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:00:06,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 652 [2023-08-30 15:00:06,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 86 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:06,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:06,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 652 [2023-08-30 15:00:06,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:08,575 INFO L130 PetriNetUnfolder]: 30341/40994 cut-off events. [2023-08-30 15:00:08,575 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-08-30 15:00:08,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83342 conditions, 40994 events. 30341/40994 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 232605 event pairs, 22150 based on Foata normal form. 2/20132 useless extension candidates. Maximal degree in co-relation 49977. Up to 40994 conditions per place. [2023-08-30 15:00:08,735 INFO L137 encePairwiseOnDemand]: 648/652 looper letters, 73 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-08-30 15:00:08,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 450 flow [2023-08-30 15:00:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:00:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:00:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 945 transitions. [2023-08-30 15:00:08,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831288343558282 [2023-08-30 15:00:08,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 945 transitions. [2023-08-30 15:00:08,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 945 transitions. [2023-08-30 15:00:08,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:08,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 945 transitions. [2023-08-30 15:00:08,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:08,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:08,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:08,743 INFO L175 Difference]: Start difference. First operand has 62 places, 86 transitions, 383 flow. Second operand 3 states and 945 transitions. [2023-08-30 15:00:08,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 450 flow [2023-08-30 15:00:08,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 420 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 15:00:08,746 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 274 flow [2023-08-30 15:00:08,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2023-08-30 15:00:08,747 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 15:00:08,747 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 274 flow [2023-08-30 15:00:08,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:08,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:08,748 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:00:08,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:00:08,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 15:00:08,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1954997037, now seen corresponding path program 2 times [2023-08-30 15:00:08,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:08,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862382545] [2023-08-30 15:00:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:08,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:00:08,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:08,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862382545] [2023-08-30 15:00:08,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862382545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:00:08,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910085414] [2023-08-30 15:00:08,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:00:08,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:00:08,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:00:08,870 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 15:00:08,936 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 15:00:08,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:00:08,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:00:08,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:00:08,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:00:08,987 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 15:00:08,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:00:08,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910085414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:00:08,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:00:08,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:00:08,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272847003] [2023-08-30 15:00:08,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:00:08,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:00:08,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:08,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:00:08,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:00:09,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 652 [2023-08-30 15:00:09,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:09,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:09,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 652 [2023-08-30 15:00:09,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:10,868 INFO L130 PetriNetUnfolder]: 30341/40993 cut-off events. [2023-08-30 15:00:10,868 INFO L131 PetriNetUnfolder]: For 244/244 co-relation queries the response was YES. [2023-08-30 15:00:10,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83320 conditions, 40993 events. 30341/40993 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 1843. Compared 232630 event pairs, 22150 based on Foata normal form. 1/20132 useless extension candidates. Maximal degree in co-relation 83308. Up to 40988 conditions per place. [2023-08-30 15:00:11,058 INFO L137 encePairwiseOnDemand]: 649/652 looper letters, 67 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-08-30 15:00:11,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 410 flow [2023-08-30 15:00:11,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:00:11,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:00:11,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 951 transitions. [2023-08-30 15:00:11,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48619631901840493 [2023-08-30 15:00:11,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 951 transitions. [2023-08-30 15:00:11,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 951 transitions. [2023-08-30 15:00:11,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:11,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 951 transitions. [2023-08-30 15:00:11,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:11,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:11,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:11,066 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 274 flow. Second operand 3 states and 951 transitions. [2023-08-30 15:00:11,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 410 flow [2023-08-30 15:00:11,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:00:11,069 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 275 flow [2023-08-30 15:00:11,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2023-08-30 15:00:11,070 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 15:00:11,070 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 275 flow [2023-08-30 15:00:11,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:11,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:11,071 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:00:11,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 15:00:11,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 15:00:11,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 15:00:11,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:11,276 INFO L85 PathProgramCache]: Analyzing trace with hash 721333687, now seen corresponding path program 1 times [2023-08-30 15:00:11,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:11,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156365294] [2023-08-30 15:00:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:11,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:00:11,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:11,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156365294] [2023-08-30 15:00:11,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156365294] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:00:11,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796828982] [2023-08-30 15:00:11,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:11,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:00:11,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:00:11,364 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 15:00:11,367 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 15:00:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:11,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:00:11,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:00:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:00:11,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:00:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:00:11,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796828982] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:00:11,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:00:11,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 15:00:11,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377712491] [2023-08-30 15:00:11,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:00:11,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:00:11,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:11,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:00:11,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:00:11,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 652 [2023-08-30 15:00:11,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 297.15384615384613) internal successors, (3863), 13 states have internal predecessors, (3863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:11,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:11,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 652 [2023-08-30 15:00:11,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:16,989 INFO L130 PetriNetUnfolder]: 66749/90181 cut-off events. [2023-08-30 15:00:16,990 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-08-30 15:00:17,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183280 conditions, 90181 events. 66749/90181 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 2333. Compared 532521 event pairs, 48730 based on Foata normal form. 12/44294 useless extension candidates. Maximal degree in co-relation 183267. Up to 9317 conditions per place. [2023-08-30 15:00:17,396 INFO L137 encePairwiseOnDemand]: 644/652 looper letters, 502 selfloop transitions, 51 changer transitions 0/553 dead transitions. [2023-08-30 15:00:17,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 553 transitions, 2521 flow [2023-08-30 15:00:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:00:17,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:00:17,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4117 transitions. [2023-08-30 15:00:17,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262014314928425 [2023-08-30 15:00:17,404 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4117 transitions. [2023-08-30 15:00:17,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4117 transitions. [2023-08-30 15:00:17,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:17,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4117 transitions. [2023-08-30 15:00:17,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 343.0833333333333) internal successors, (4117), 12 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:17,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 652.0) internal successors, (8476), 13 states have internal predecessors, (8476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:17,422 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 652.0) internal successors, (8476), 13 states have internal predecessors, (8476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:17,422 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 275 flow. Second operand 12 states and 4117 transitions. [2023-08-30 15:00:17,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 553 transitions, 2521 flow [2023-08-30 15:00:17,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 553 transitions, 2497 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:00:17,427 INFO L231 Difference]: Finished difference. Result has 74 places, 103 transitions, 611 flow [2023-08-30 15:00:17,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=611, PETRI_PLACES=74, PETRI_TRANSITIONS=103} [2023-08-30 15:00:17,428 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-08-30 15:00:17,428 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 103 transitions, 611 flow [2023-08-30 15:00:17,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 297.15384615384613) internal successors, (3863), 13 states have internal predecessors, (3863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:17,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:17,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:00:17,436 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 15:00:17,633 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 15:00:17,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 15:00:17,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:17,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1500592319, now seen corresponding path program 1 times [2023-08-30 15:00:17,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:17,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080671488] [2023-08-30 15:00:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:17,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:17,684 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 15:00:17,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:17,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080671488] [2023-08-30 15:00:17,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080671488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:00:17,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:00:17,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:00:17,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345045657] [2023-08-30 15:00:17,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:00:17,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:00:17,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:17,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:00:17,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:00:17,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 652 [2023-08-30 15:00:17,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 103 transitions, 611 flow. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:17,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:17,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 652 [2023-08-30 15:00:17,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:26,247 INFO L130 PetriNetUnfolder]: 115501/156445 cut-off events. [2023-08-30 15:00:26,247 INFO L131 PetriNetUnfolder]: For 578/578 co-relation queries the response was YES. [2023-08-30 15:00:26,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317922 conditions, 156445 events. 115501/156445 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 4296. Compared 1037341 event pairs, 48730 based on Foata normal form. 0/78583 useless extension candidates. Maximal degree in co-relation 317903. Up to 90182 conditions per place. [2023-08-30 15:00:27,139 INFO L137 encePairwiseOnDemand]: 648/652 looper letters, 140 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2023-08-30 15:00:27,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 978 flow [2023-08-30 15:00:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:00:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:00:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1003 transitions. [2023-08-30 15:00:27,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127811860940695 [2023-08-30 15:00:27,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1003 transitions. [2023-08-30 15:00:27,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1003 transitions. [2023-08-30 15:00:27,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:27,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1003 transitions. [2023-08-30 15:00:27,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:27,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:27,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:27,169 INFO L175 Difference]: Start difference. First operand has 74 places, 103 transitions, 611 flow. Second operand 3 states and 1003 transitions. [2023-08-30 15:00:27,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 978 flow [2023-08-30 15:00:27,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 142 transitions, 834 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 15:00:27,172 INFO L231 Difference]: Finished difference. Result has 72 places, 104 transitions, 481 flow [2023-08-30 15:00:27,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=72, PETRI_TRANSITIONS=104} [2023-08-30 15:00:27,172 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-08-30 15:00:27,180 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 104 transitions, 481 flow [2023-08-30 15:00:27,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:27,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:27,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:00:27,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:00:27,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 15:00:27,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1500593717, now seen corresponding path program 1 times [2023-08-30 15:00:27,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:27,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597291980] [2023-08-30 15:00:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:27,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:27,260 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 15:00:27,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:27,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597291980] [2023-08-30 15:00:27,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597291980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:00:27,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:00:27,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:00:27,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083344943] [2023-08-30 15:00:27,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:00:27,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:00:27,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:27,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:00:27,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:00:27,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 652 [2023-08-30 15:00:27,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 104 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:27,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:27,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 652 [2023-08-30 15:00:27,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:44,201 INFO L130 PetriNetUnfolder]: 223094/300503 cut-off events. [2023-08-30 15:00:44,201 INFO L131 PetriNetUnfolder]: For 22477/22477 co-relation queries the response was YES. [2023-08-30 15:00:45,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634815 conditions, 300503 events. 223094/300503 cut-off events. For 22477/22477 co-relation queries the response was YES. Maximal size of possible extension queue 7292. Compared 2032919 event pairs, 162656 based on Foata normal form. 0/165484 useless extension candidates. Maximal degree in co-relation 634796. Up to 145752 conditions per place. [2023-08-30 15:00:46,194 INFO L137 encePairwiseOnDemand]: 645/652 looper letters, 224 selfloop transitions, 6 changer transitions 0/230 dead transitions. [2023-08-30 15:00:46,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 230 transitions, 1400 flow [2023-08-30 15:00:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:00:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:00:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1603 transitions. [2023-08-30 15:00:46,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49171779141104294 [2023-08-30 15:00:46,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1603 transitions. [2023-08-30 15:00:46,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1603 transitions. [2023-08-30 15:00:46,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:46,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1603 transitions. [2023-08-30 15:00:46,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.6) internal successors, (1603), 5 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:46,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 652.0) internal successors, (3912), 6 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:46,205 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 652.0) internal successors, (3912), 6 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:46,205 INFO L175 Difference]: Start difference. First operand has 72 places, 104 transitions, 481 flow. Second operand 5 states and 1603 transitions. [2023-08-30 15:00:46,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 230 transitions, 1400 flow [2023-08-30 15:00:46,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 230 transitions, 1394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:00:46,245 INFO L231 Difference]: Finished difference. Result has 78 places, 107 transitions, 524 flow [2023-08-30 15:00:46,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=524, PETRI_PLACES=78, PETRI_TRANSITIONS=107} [2023-08-30 15:00:46,246 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2023-08-30 15:00:46,246 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 107 transitions, 524 flow [2023-08-30 15:00:46,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:46,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:46,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:00:46,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:00:46,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 15:00:46,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:46,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1500593589, now seen corresponding path program 1 times [2023-08-30 15:00:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:46,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547952657] [2023-08-30 15:00:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:46,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:46,295 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 15:00:46,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:46,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547952657] [2023-08-30 15:00:46,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547952657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:00:46,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:00:46,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:00:46,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665983369] [2023-08-30 15:00:46,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:00:46,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:00:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:00:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:00:46,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 652 [2023-08-30 15:00:46,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 107 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 287.6) internal successors, (1438), 5 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:46,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:46,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 652 [2023-08-30 15:00:46,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:01:02,203 INFO L130 PetriNetUnfolder]: 207538/280675 cut-off events. [2023-08-30 15:01:02,204 INFO L131 PetriNetUnfolder]: For 41943/41943 co-relation queries the response was YES. [2023-08-30 15:01:03,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598358 conditions, 280675 events. 207538/280675 cut-off events. For 41943/41943 co-relation queries the response was YES. Maximal size of possible extension queue 6679. Compared 1902628 event pairs, 153224 based on Foata normal form. 8188/171804 useless extension candidates. Maximal degree in co-relation 598335. Up to 244620 conditions per place. [2023-08-30 15:01:03,939 INFO L137 encePairwiseOnDemand]: 645/652 looper letters, 124 selfloop transitions, 26 changer transitions 0/150 dead transitions. [2023-08-30 15:01:03,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 150 transitions, 924 flow [2023-08-30 15:01:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:01:03,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:01:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1247 transitions. [2023-08-30 15:01:03,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781441717791411 [2023-08-30 15:01:03,943 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1247 transitions. [2023-08-30 15:01:03,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1247 transitions. [2023-08-30 15:01:03,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:01:03,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1247 transitions. [2023-08-30 15:01:03,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:03,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 652.0) internal successors, (3260), 5 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:03,948 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 652.0) internal successors, (3260), 5 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:03,948 INFO L175 Difference]: Start difference. First operand has 78 places, 107 transitions, 524 flow. Second operand 4 states and 1247 transitions. [2023-08-30 15:01:03,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 150 transitions, 924 flow [2023-08-30 15:01:03,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 150 transitions, 916 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 15:01:03,974 INFO L231 Difference]: Finished difference. Result has 78 places, 105 transitions, 558 flow [2023-08-30 15:01:03,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=78, PETRI_TRANSITIONS=105} [2023-08-30 15:01:03,975 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2023-08-30 15:01:03,975 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 105 transitions, 558 flow [2023-08-30 15:01:03,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 287.6) internal successors, (1438), 5 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:03,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:01:03,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:01:03,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:01:03,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 15:01:03,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:01:03,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1792992732, now seen corresponding path program 1 times [2023-08-30 15:01:03,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:01:03,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404215197] [2023-08-30 15:01:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:01:03,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:01:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:01:04,038 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 15:01:04,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:01:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404215197] [2023-08-30 15:01:04,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404215197] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:01:04,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465912145] [2023-08-30 15:01:04,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:01:04,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:01:04,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:01:04,040 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 15:01:04,042 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 15:01:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:01:04,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:01:04,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:01:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:01:04,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:01:04,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465912145] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:01:04,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:01:04,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 15:01:04,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428384651] [2023-08-30 15:01:04,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:01:04,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:01:04,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:01:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:01:04,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:01:04,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 652 [2023-08-30 15:01:04,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 105 transitions, 558 flow. Second operand has 4 states, 4 states have (on average 302.25) internal successors, (1209), 4 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:04,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:01:04,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 652 [2023-08-30 15:01:04,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:01:17,108 INFO L130 PetriNetUnfolder]: 172695/233222 cut-off events. [2023-08-30 15:01:17,108 INFO L131 PetriNetUnfolder]: For 22655/22655 co-relation queries the response was YES. [2023-08-30 15:01:17,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492617 conditions, 233222 events. 172695/233222 cut-off events. For 22655/22655 co-relation queries the response was YES. Maximal size of possible extension queue 5630. Compared 1542671 event pairs, 124775 based on Foata normal form. 3432/141158 useless extension candidates. Maximal degree in co-relation 492594. Up to 233210 conditions per place. [2023-08-30 15:01:18,477 INFO L137 encePairwiseOnDemand]: 648/652 looper letters, 91 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2023-08-30 15:01:18,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 756 flow [2023-08-30 15:01:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:01:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:01:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1252 transitions. [2023-08-30 15:01:18,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48006134969325154 [2023-08-30 15:01:18,480 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1252 transitions. [2023-08-30 15:01:18,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1252 transitions. [2023-08-30 15:01:18,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:01:18,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1252 transitions. [2023-08-30 15:01:18,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:18,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 652.0) internal successors, (3260), 5 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:18,485 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 652.0) internal successors, (3260), 5 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:18,485 INFO L175 Difference]: Start difference. First operand has 78 places, 105 transitions, 558 flow. Second operand 4 states and 1252 transitions. [2023-08-30 15:01:18,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 756 flow [2023-08-30 15:01:18,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 727 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:01:18,503 INFO L231 Difference]: Finished difference. Result has 76 places, 103 transitions, 545 flow [2023-08-30 15:01:18,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=545, PETRI_PLACES=76, PETRI_TRANSITIONS=103} [2023-08-30 15:01:18,504 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-08-30 15:01:18,504 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 103 transitions, 545 flow [2023-08-30 15:01:18,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 302.25) internal successors, (1209), 4 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:18,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:01:18,505 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:01:18,512 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 15:01:18,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:01:18,710 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 15:01:18,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:01:18,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1039711662, now seen corresponding path program 1 times [2023-08-30 15:01:18,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:01:18,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886710453] [2023-08-30 15:01:18,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:01:18,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:01:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:01:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:01:18,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:01:18,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886710453] [2023-08-30 15:01:18,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886710453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:01:18,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:01:18,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:01:18,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661421236] [2023-08-30 15:01:18,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:01:18,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:01:18,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:01:18,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:01:18,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:01:18,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 652 [2023-08-30 15:01:18,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 103 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:18,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:01:18,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 652 [2023-08-30 15:01:18,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:01:32,425 INFO L130 PetriNetUnfolder]: 176559/240398 cut-off events. [2023-08-30 15:01:32,425 INFO L131 PetriNetUnfolder]: For 4587/4587 co-relation queries the response was YES. [2023-08-30 15:01:33,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503361 conditions, 240398 events. 176559/240398 cut-off events. For 4587/4587 co-relation queries the response was YES. Maximal size of possible extension queue 5927. Compared 1729426 event pairs, 17595 based on Foata normal form. 0/143798 useless extension candidates. Maximal degree in co-relation 503339. Up to 206310 conditions per place. [2023-08-30 15:01:34,041 INFO L137 encePairwiseOnDemand]: 650/652 looper letters, 130 selfloop transitions, 1 changer transitions 0/131 dead transitions. [2023-08-30 15:01:34,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 131 transitions, 866 flow [2023-08-30 15:01:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:01:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:01:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 988 transitions. [2023-08-30 15:01:34,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051124744376279 [2023-08-30 15:01:34,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 988 transitions. [2023-08-30 15:01:34,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 988 transitions. [2023-08-30 15:01:34,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:01:34,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 988 transitions. [2023-08-30 15:01:34,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:34,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:34,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:34,048 INFO L175 Difference]: Start difference. First operand has 76 places, 103 transitions, 545 flow. Second operand 3 states and 988 transitions. [2023-08-30 15:01:34,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 131 transitions, 866 flow [2023-08-30 15:01:34,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 131 transitions, 853 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:01:34,066 INFO L231 Difference]: Finished difference. Result has 75 places, 102 transitions, 530 flow [2023-08-30 15:01:34,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=530, PETRI_PLACES=75, PETRI_TRANSITIONS=102} [2023-08-30 15:01:34,067 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-08-30 15:01:34,067 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 102 transitions, 530 flow [2023-08-30 15:01:34,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:34,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:01:34,067 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:01:34,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:01:34,068 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 15:01:34,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:01:34,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1039711611, now seen corresponding path program 1 times [2023-08-30 15:01:34,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:01:34,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259100343] [2023-08-30 15:01:34,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:01:34,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:01:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:01:34,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:01:34,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:01:34,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259100343] [2023-08-30 15:01:34,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259100343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:01:34,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:01:34,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:01:34,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301912647] [2023-08-30 15:01:34,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:01:34,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:01:34,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:01:34,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:01:34,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:01:34,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 652 [2023-08-30 15:01:34,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 102 transitions, 530 flow. Second operand has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:01:34,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:01:34,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 652 [2023-08-30 15:01:34,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand