./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --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/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --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 13:58:53,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:58:53,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:58:53,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:58:53,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:58:53,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:58:53,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:58:53,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:58:53,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:58:53,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:58:53,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:58:53,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:58:53,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:58:53,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:58:53,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:58:53,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:58:53,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:58:53,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:58:53,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:58:53,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:58:53,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:58:53,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:58:53,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:58:53,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:58:53,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:58:53,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:58:53,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:58:53,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:58:53,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:58:53,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:58:53,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:58:53,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:58:53,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:58:53,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:58:53,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:58:53,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:58:53,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:58:53,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:58:53,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:58:53,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:58:53,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:58:53,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:58:53,636 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:58:53,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:58:53,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:58:53,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:58:53,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:58:53,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:58:53,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:58:53,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:58:53,640 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:58:53,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:58:53,641 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:58:53,641 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:58:53,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:58:53,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:58:53,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:58:53,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:58:53,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:58:53,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:58:53,643 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:58:53,643 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:58:53,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:58:53,643 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:58:53,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:58:53,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:58:53,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:58:53,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:58:53,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:58:53,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:58:53,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:58:53,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:58:53,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:58:53,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:58:53,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:58:53,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:58:53,646 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:58:53,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:58:53,646 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:58:53,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:58:53,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:58:53,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:58:53,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:58:53,945 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:58:53,945 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:58:53,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-08-30 13:58:55,161 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:58:55,416 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:58:55,420 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-08-30 13:58:55,444 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22734e12d/072cd8c0108d43c8a7bc0accb9727f09/FLAGe0782cbcf [2023-08-30 13:58:55,461 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22734e12d/072cd8c0108d43c8a7bc0accb9727f09 [2023-08-30 13:58:55,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:58:55,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:58:55,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:58:55,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:58:55,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:58:55,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:55,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5147a38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55, skipping insertion in model container [2023-08-30 13:58:55,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:55,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:58:55,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:58:55,693 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2023-08-30 13:58:55,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:58:55,857 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:58:55,867 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2023-08-30 13:58:55,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:58:55,959 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:58:55,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55 WrapperNode [2023-08-30 13:58:55,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:58:55,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:58:55,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:58:55,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:58:55,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:55,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:56,012 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2023-08-30 13:58:56,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:58:56,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:58:56,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:58:56,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:58:56,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:56,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:56,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:56,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:56,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:56,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:56,069 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:56,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:56,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:58:56,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:58:56,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:58:56,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:58:56,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55" (1/1) ... [2023-08-30 13:58:56,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:58:56,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:58:56,118 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 13:58:56,136 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 13:58:56,152 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-30 13:58:56,152 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-30 13:58:56,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:58:56,152 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 13:58:56,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:58:56,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:58:56,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:58:56,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 13:58:56,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:58:56,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:58:56,155 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 13:58:56,284 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:58:56,286 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:58:56,507 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:58:56,514 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:58:56,514 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 13:58:56,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:58:56 BoogieIcfgContainer [2023-08-30 13:58:56,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:58:56,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:58:56,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:58:56,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:58:56,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:58:55" (1/3) ... [2023-08-30 13:58:56,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676345e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:58:56, skipping insertion in model container [2023-08-30 13:58:56,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:55" (2/3) ... [2023-08-30 13:58:56,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676345e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:58:56, skipping insertion in model container [2023-08-30 13:58:56,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:58:56" (3/3) ... [2023-08-30 13:58:56,523 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2023-08-30 13:58:56,530 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:58:56,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:58:56,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 13:58:56,539 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:58:56,600 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 13:58:56,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 235 flow [2023-08-30 13:58:56,716 INFO L130 PetriNetUnfolder]: 10/114 cut-off events. [2023-08-30 13:58:56,716 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:58:56,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 114 events. 10/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 215 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-08-30 13:58:56,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 115 transitions, 235 flow [2023-08-30 13:58:56,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 114 transitions, 231 flow [2023-08-30 13:58:56,730 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:58:56,742 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 114 transitions, 231 flow [2023-08-30 13:58:56,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 114 transitions, 231 flow [2023-08-30 13:58:56,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 114 transitions, 231 flow [2023-08-30 13:58:56,783 INFO L130 PetriNetUnfolder]: 10/114 cut-off events. [2023-08-30 13:58:56,783 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:58:56,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 114 events. 10/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 215 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-08-30 13:58:56,787 INFO L119 LiptonReduction]: Number of co-enabled transitions 3312 [2023-08-30 13:58:59,457 INFO L134 LiptonReduction]: Checked pairs total: 6018 [2023-08-30 13:58:59,457 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-30 13:58:59,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:58:59,473 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;@25e16766, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:58:59,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 13:58:59,477 INFO L130 PetriNetUnfolder]: 4/20 cut-off events. [2023-08-30 13:58:59,477 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:58:59,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:58:59,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:58:59,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:58:59,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:58:59,482 INFO L85 PathProgramCache]: Analyzing trace with hash 653838975, now seen corresponding path program 1 times [2023-08-30 13:58:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:58:59,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165536359] [2023-08-30 13:58:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:58:59,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:58:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:58:59,724 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 13:58:59,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:58:59,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165536359] [2023-08-30 13:58:59,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165536359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:58:59,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:58:59,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:58:59,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208338678] [2023-08-30 13:58:59,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:58:59,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:58:59,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:58:59,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:58:59,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:58:59,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 221 [2023-08-30 13:58:59,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 13:58:59,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:58:59,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 221 [2023-08-30 13:58:59,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:58:59,917 INFO L130 PetriNetUnfolder]: 146/279 cut-off events. [2023-08-30 13:58:59,917 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:58:59,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 279 events. 146/279 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1083 event pairs, 77 based on Foata normal form. 11/204 useless extension candidates. Maximal degree in co-relation 539. Up to 223 conditions per place. [2023-08-30 13:58:59,924 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 31 selfloop transitions, 3 changer transitions 1/39 dead transitions. [2023-08-30 13:58:59,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 151 flow [2023-08-30 13:58:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:58:59,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:58:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-08-30 13:58:59,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-08-30 13:58:59,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-08-30 13:58:59,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-08-30 13:58:59,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:58:59,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-08-30 13:58:59,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 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 13:58:59,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 13:58:59,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 13:58:59,964 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 65 flow. Second operand 3 states and 340 transitions. [2023-08-30 13:58:59,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 151 flow [2023-08-30 13:58:59,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:58:59,968 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 88 flow [2023-08-30 13:58:59,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2023-08-30 13:58:59,974 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-08-30 13:58:59,974 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 88 flow [2023-08-30 13:58:59,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 13:58:59,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:58:59,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:58:59,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 13:58:59,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:58:59,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:58:59,984 INFO L85 PathProgramCache]: Analyzing trace with hash 840618020, now seen corresponding path program 1 times [2023-08-30 13:58:59,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:58:59,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319949226] [2023-08-30 13:58:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:58:59,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:00,069 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 13:59:00,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:00,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319949226] [2023-08-30 13:59:00,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319949226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:00,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:59:00,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:59:00,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664334268] [2023-08-30 13:59:00,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:00,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:59:00,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:00,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:59:00,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:59:00,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-08-30 13:59:00,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 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 13:59:00,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:00,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-08-30 13:59:00,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:00,144 INFO L130 PetriNetUnfolder]: 144/280 cut-off events. [2023-08-30 13:59:00,145 INFO L131 PetriNetUnfolder]: For 44/51 co-relation queries the response was YES. [2023-08-30 13:59:00,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 280 events. 144/280 cut-off events. For 44/51 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1279 event pairs, 15 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 617. Up to 224 conditions per place. [2023-08-30 13:59:00,147 INFO L137 encePairwiseOnDemand]: 217/221 looper letters, 38 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-30 13:59:00,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 212 flow [2023-08-30 13:59:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:59:00,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:59:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-08-30 13:59:00,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526395173453997 [2023-08-30 13:59:00,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-08-30 13:59:00,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-08-30 13:59:00,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:00,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-08-30 13:59:00,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 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 13:59:00,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 13:59:00,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 13:59:00,153 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 88 flow. Second operand 3 states and 349 transitions. [2023-08-30 13:59:00,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 212 flow [2023-08-30 13:59:00,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:59:00,155 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 96 flow [2023-08-30 13:59:00,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2023-08-30 13:59:00,156 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-08-30 13:59:00,156 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 96 flow [2023-08-30 13:59:00,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 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 13:59:00,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:00,157 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:00,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 13:59:00,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:00,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:00,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1102290696, now seen corresponding path program 1 times [2023-08-30 13:59:00,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:00,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64538043] [2023-08-30 13:59:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:00,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:00,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 13:59:00,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:00,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64538043] [2023-08-30 13:59:00,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64538043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:00,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:59:00,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:59:00,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830126927] [2023-08-30 13:59:00,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:00,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:59:00,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:00,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:59:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:59:00,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 221 [2023-08-30 13:59:00,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 13:59:00,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:00,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 221 [2023-08-30 13:59:00,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:00,330 INFO L130 PetriNetUnfolder]: 270/530 cut-off events. [2023-08-30 13:59:00,331 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 13:59:00,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 530 events. 270/530 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2296 event pairs, 63 based on Foata normal form. 8/434 useless extension candidates. Maximal degree in co-relation 1218. Up to 294 conditions per place. [2023-08-30 13:59:00,336 INFO L137 encePairwiseOnDemand]: 209/221 looper letters, 38 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-08-30 13:59:00,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 52 transitions, 247 flow [2023-08-30 13:59:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:59:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:59:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2023-08-30 13:59:00,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143288084464555 [2023-08-30 13:59:00,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2023-08-30 13:59:00,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2023-08-30 13:59:00,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:00,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2023-08-30 13:59:00,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 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 13:59:00,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 13:59:00,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 13:59:00,342 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 96 flow. Second operand 3 states and 341 transitions. [2023-08-30 13:59:00,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 52 transitions, 247 flow [2023-08-30 13:59:00,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:59:00,345 INFO L231 Difference]: Finished difference. Result has 35 places, 40 transitions, 178 flow [2023-08-30 13:59:00,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=35, PETRI_TRANSITIONS=40} [2023-08-30 13:59:00,346 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-08-30 13:59:00,347 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 40 transitions, 178 flow [2023-08-30 13:59:00,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 13:59:00,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:00,347 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:00,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 13:59:00,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:00,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:00,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1102290751, now seen corresponding path program 1 times [2023-08-30 13:59:00,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:00,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633332016] [2023-08-30 13:59:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:00,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:00,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:00,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633332016] [2023-08-30 13:59:00,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633332016] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:00,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395727747] [2023-08-30 13:59:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:00,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:00,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:00,493 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 13:59:00,516 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 13:59:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:00,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 13:59:00,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:00,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:59:00,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395727747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:00,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:59:00,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 13:59:00,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676290640] [2023-08-30 13:59:00,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:00,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:59:00,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:00,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:59:00,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:59:00,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 221 [2023-08-30 13:59:00,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 40 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 13:59:00,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:00,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 221 [2023-08-30 13:59:00,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:00,826 INFO L130 PetriNetUnfolder]: 309/614 cut-off events. [2023-08-30 13:59:00,826 INFO L131 PetriNetUnfolder]: For 409/415 co-relation queries the response was YES. [2023-08-30 13:59:00,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 614 events. 309/614 cut-off events. For 409/415 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2658 event pairs, 99 based on Foata normal form. 22/559 useless extension candidates. Maximal degree in co-relation 1715. Up to 396 conditions per place. [2023-08-30 13:59:00,831 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 50 selfloop transitions, 19 changer transitions 0/75 dead transitions. [2023-08-30 13:59:00,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 75 transitions, 452 flow [2023-08-30 13:59:00,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 13:59:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 13:59:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 520 transitions. [2023-08-30 13:59:00,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2023-08-30 13:59:00,833 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 520 transitions. [2023-08-30 13:59:00,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 520 transitions. [2023-08-30 13:59:00,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:00,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 520 transitions. [2023-08-30 13:59:00,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 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 13:59:00,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 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 13:59:00,837 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 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 13:59:00,838 INFO L175 Difference]: Start difference. First operand has 35 places, 40 transitions, 178 flow. Second operand 5 states and 520 transitions. [2023-08-30 13:59:00,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 75 transitions, 452 flow [2023-08-30 13:59:00,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 75 transitions, 424 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:59:00,842 INFO L231 Difference]: Finished difference. Result has 40 places, 51 transitions, 292 flow [2023-08-30 13:59:00,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=40, PETRI_TRANSITIONS=51} [2023-08-30 13:59:00,843 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2023-08-30 13:59:00,843 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 51 transitions, 292 flow [2023-08-30 13:59:00,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 13:59:00,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:00,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:00,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 13:59:01,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:01,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:01,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:01,051 INFO L85 PathProgramCache]: Analyzing trace with hash -95520777, now seen corresponding path program 1 times [2023-08-30 13:59:01,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:01,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15817405] [2023-08-30 13:59:01,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:01,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:01,135 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 13:59:01,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:01,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15817405] [2023-08-30 13:59:01,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15817405] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:01,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:59:01,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 13:59:01,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762999608] [2023-08-30 13:59:01,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:01,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:59:01,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:01,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:59:01,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:59:01,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 221 [2023-08-30 13:59:01,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 51 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 13:59:01,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:01,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 221 [2023-08-30 13:59:01,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:01,224 INFO L130 PetriNetUnfolder]: 123/288 cut-off events. [2023-08-30 13:59:01,225 INFO L131 PetriNetUnfolder]: For 230/230 co-relation queries the response was YES. [2023-08-30 13:59:01,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 288 events. 123/288 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1107 event pairs, 8 based on Foata normal form. 17/263 useless extension candidates. Maximal degree in co-relation 806. Up to 180 conditions per place. [2023-08-30 13:59:01,227 INFO L137 encePairwiseOnDemand]: 216/221 looper letters, 33 selfloop transitions, 5 changer transitions 1/47 dead transitions. [2023-08-30 13:59:01,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 311 flow [2023-08-30 13:59:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:59:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:59:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-08-30 13:59:01,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49321266968325794 [2023-08-30 13:59:01,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-08-30 13:59:01,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-08-30 13:59:01,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:01,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-08-30 13:59:01,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 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 13:59:01,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 13:59:01,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 13:59:01,232 INFO L175 Difference]: Start difference. First operand has 40 places, 51 transitions, 292 flow. Second operand 3 states and 327 transitions. [2023-08-30 13:59:01,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 311 flow [2023-08-30 13:59:01,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 292 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 13:59:01,235 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 202 flow [2023-08-30 13:59:01,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2023-08-30 13:59:01,236 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-08-30 13:59:01,236 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 202 flow [2023-08-30 13:59:01,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 13:59:01,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:01,237 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:01,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 13:59:01,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:01,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:01,238 INFO L85 PathProgramCache]: Analyzing trace with hash 188723371, now seen corresponding path program 1 times [2023-08-30 13:59:01,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:01,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514426374] [2023-08-30 13:59:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:01,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:01,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:01,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514426374] [2023-08-30 13:59:01,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514426374] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:01,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344586892] [2023-08-30 13:59:01,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:01,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:01,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:01,321 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 13:59:01,337 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 13:59:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:01,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 13:59:01,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:01,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:01,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344586892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:01,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:01,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 13:59:01,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621776308] [2023-08-30 13:59:01,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:01,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 13:59:01,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:01,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 13:59:01,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 13:59:01,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 221 [2023-08-30 13:59:01,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 202 flow. Second operand has 10 states, 10 states have (on average 93.8) internal successors, (938), 10 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 13:59:01,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:01,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 221 [2023-08-30 13:59:01,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:01,694 INFO L130 PetriNetUnfolder]: 220/445 cut-off events. [2023-08-30 13:59:01,695 INFO L131 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2023-08-30 13:59:01,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 445 events. 220/445 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1670 event pairs, 59 based on Foata normal form. 10/384 useless extension candidates. Maximal degree in co-relation 1335. Up to 136 conditions per place. [2023-08-30 13:59:01,697 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 60 selfloop transitions, 24 changer transitions 4/90 dead transitions. [2023-08-30 13:59:01,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 90 transitions, 570 flow [2023-08-30 13:59:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 13:59:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 13:59:01,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 903 transitions. [2023-08-30 13:59:01,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4539969834087481 [2023-08-30 13:59:01,700 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 903 transitions. [2023-08-30 13:59:01,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 903 transitions. [2023-08-30 13:59:01,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:01,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 903 transitions. [2023-08-30 13:59:01,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 100.33333333333333) internal successors, (903), 9 states have internal predecessors, (903), 0 states have call successors, (0), 0 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 13:59:01,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 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 13:59:01,707 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 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 13:59:01,707 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 202 flow. Second operand 9 states and 903 transitions. [2023-08-30 13:59:01,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 90 transitions, 570 flow [2023-08-30 13:59:01,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 90 transitions, 549 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 13:59:01,710 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 346 flow [2023-08-30 13:59:01,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=346, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-08-30 13:59:01,711 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2023-08-30 13:59:01,711 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 346 flow [2023-08-30 13:59:01,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.8) internal successors, (938), 10 states have internal predecessors, (938), 0 states have call successors, (0), 0 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 13:59:01,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:01,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:01,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 13:59:01,917 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,SelfDestructingSolverStorable5 [2023-08-30 13:59:01,918 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:01,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:01,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1678997361, now seen corresponding path program 1 times [2023-08-30 13:59:01,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:01,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40175844] [2023-08-30 13:59:01,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:01,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:01,948 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 13:59:01,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:01,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40175844] [2023-08-30 13:59:01,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40175844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:01,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:59:01,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:59:01,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834244324] [2023-08-30 13:59:01,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:01,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:59:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:59:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:59:01,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 221 [2023-08-30 13:59:01,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 13:59:01,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:01,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 221 [2023-08-30 13:59:01,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:02,034 INFO L130 PetriNetUnfolder]: 159/349 cut-off events. [2023-08-30 13:59:02,035 INFO L131 PetriNetUnfolder]: For 552/552 co-relation queries the response was YES. [2023-08-30 13:59:02,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 349 events. 159/349 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1300 event pairs, 56 based on Foata normal form. 33/333 useless extension candidates. Maximal degree in co-relation 1149. Up to 189 conditions per place. [2023-08-30 13:59:02,038 INFO L137 encePairwiseOnDemand]: 214/221 looper letters, 44 selfloop transitions, 8 changer transitions 1/55 dead transitions. [2023-08-30 13:59:02,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 453 flow [2023-08-30 13:59:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:59:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:59:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-08-30 13:59:02,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947209653092006 [2023-08-30 13:59:02,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-08-30 13:59:02,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-08-30 13:59:02,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:02,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-08-30 13:59:02,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 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 13:59:02,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 13:59:02,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 13:59:02,042 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 346 flow. Second operand 3 states and 328 transitions. [2023-08-30 13:59:02,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 453 flow [2023-08-30 13:59:02,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 442 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 13:59:02,045 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 331 flow [2023-08-30 13:59:02,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-08-30 13:59:02,046 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2023-08-30 13:59:02,046 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 331 flow [2023-08-30 13:59:02,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 13:59:02,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:02,047 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 13:59:02,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 13:59:02,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:02,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 976583335, now seen corresponding path program 1 times [2023-08-30 13:59:02,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:02,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597105328] [2023-08-30 13:59:02,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:02,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:02,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:02,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597105328] [2023-08-30 13:59:02,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597105328] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:02,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875308102] [2023-08-30 13:59:02,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:02,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:02,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:02,101 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 13:59:02,104 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 13:59:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:02,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 13:59:02,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:02,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:02,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875308102] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:02,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:02,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 13:59:02,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405577962] [2023-08-30 13:59:02,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:02,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:59:02,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:02,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:59:02,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:59:02,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-08-30 13:59:02,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 107.28571428571429) internal successors, (751), 7 states have internal predecessors, (751), 0 states have call successors, (0), 0 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 13:59:02,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:02,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-08-30 13:59:02,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:02,437 INFO L130 PetriNetUnfolder]: 233/550 cut-off events. [2023-08-30 13:59:02,437 INFO L131 PetriNetUnfolder]: For 1213/1221 co-relation queries the response was YES. [2023-08-30 13:59:02,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 550 events. 233/550 cut-off events. For 1213/1221 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2416 event pairs, 26 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 1863. Up to 137 conditions per place. [2023-08-30 13:59:02,441 INFO L137 encePairwiseOnDemand]: 217/221 looper letters, 111 selfloop transitions, 9 changer transitions 3/132 dead transitions. [2023-08-30 13:59:02,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 132 transitions, 1178 flow [2023-08-30 13:59:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 13:59:02,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 13:59:02,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 812 transitions. [2023-08-30 13:59:02,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248868778280543 [2023-08-30 13:59:02,444 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 812 transitions. [2023-08-30 13:59:02,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 812 transitions. [2023-08-30 13:59:02,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:02,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 812 transitions. [2023-08-30 13:59:02,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 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 13:59:02,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 221.0) internal successors, (1768), 8 states have internal predecessors, (1768), 0 states have call successors, (0), 0 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 13:59:02,449 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 221.0) internal successors, (1768), 8 states have internal predecessors, (1768), 0 states have call successors, (0), 0 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 13:59:02,449 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 331 flow. Second operand 7 states and 812 transitions. [2023-08-30 13:59:02,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 132 transitions, 1178 flow [2023-08-30 13:59:02,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 132 transitions, 1110 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 13:59:02,454 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 364 flow [2023-08-30 13:59:02,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=364, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-08-30 13:59:02,455 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-08-30 13:59:02,455 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 364 flow [2023-08-30 13:59:02,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.28571428571429) internal successors, (751), 7 states have internal predecessors, (751), 0 states have call successors, (0), 0 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 13:59:02,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:02,456 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 13:59:02,464 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 13:59:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:02,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:02,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash 976583330, now seen corresponding path program 1 times [2023-08-30 13:59:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:02,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081007074] [2023-08-30 13:59:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:02,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:02,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:02,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081007074] [2023-08-30 13:59:02,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081007074] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:02,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253394939] [2023-08-30 13:59:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:02,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:02,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:02,727 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 13:59:02,752 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 13:59:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:02,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 13:59:02,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:02,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:59:02,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253394939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:02,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:59:02,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 13:59:02,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883277958] [2023-08-30 13:59:02,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:02,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:59:02,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:02,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:59:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:59:02,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-08-30 13:59:02,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 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 13:59:02,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:02,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-08-30 13:59:02,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:02,915 INFO L130 PetriNetUnfolder]: 178/475 cut-off events. [2023-08-30 13:59:02,915 INFO L131 PetriNetUnfolder]: For 1335/1343 co-relation queries the response was YES. [2023-08-30 13:59:02,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 475 events. 178/475 cut-off events. For 1335/1343 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2185 event pairs, 77 based on Foata normal form. 28/501 useless extension candidates. Maximal degree in co-relation 1706. Up to 379 conditions per place. [2023-08-30 13:59:02,919 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 44 selfloop transitions, 2 changer transitions 6/60 dead transitions. [2023-08-30 13:59:02,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 503 flow [2023-08-30 13:59:02,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:59:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:59:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 447 transitions. [2023-08-30 13:59:02,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505656108597285 [2023-08-30 13:59:02,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 447 transitions. [2023-08-30 13:59:02,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 447 transitions. [2023-08-30 13:59:02,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:02,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 447 transitions. [2023-08-30 13:59:02,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 13:59:02,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 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 13:59:02,924 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 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 13:59:02,924 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 364 flow. Second operand 4 states and 447 transitions. [2023-08-30 13:59:02,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 503 flow [2023-08-30 13:59:02,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 495 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 13:59:02,929 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 326 flow [2023-08-30 13:59:02,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2023-08-30 13:59:02,929 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-08-30 13:59:02,930 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 326 flow [2023-08-30 13:59:02,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 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 13:59:02,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:02,930 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:02,940 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 13:59:03,137 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 13:59:03,137 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:03,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:03,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1231779423, now seen corresponding path program 1 times [2023-08-30 13:59:03,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:03,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182885615] [2023-08-30 13:59:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:03,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:03,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:03,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182885615] [2023-08-30 13:59:03,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182885615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:03,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:59:03,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 13:59:03,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564839898] [2023-08-30 13:59:03,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:03,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 13:59:03,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:03,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 13:59:03,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:59:03,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-30 13:59:03,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 326 flow. Second operand has 5 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 13:59:03,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:03,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-30 13:59:03,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:03,357 INFO L130 PetriNetUnfolder]: 245/577 cut-off events. [2023-08-30 13:59:03,357 INFO L131 PetriNetUnfolder]: For 1298/1298 co-relation queries the response was YES. [2023-08-30 13:59:03,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 577 events. 245/577 cut-off events. For 1298/1298 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2481 event pairs, 62 based on Foata normal form. 4/581 useless extension candidates. Maximal degree in co-relation 2115. Up to 207 conditions per place. [2023-08-30 13:59:03,361 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 58 selfloop transitions, 14 changer transitions 0/74 dead transitions. [2023-08-30 13:59:03,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 633 flow [2023-08-30 13:59:03,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 13:59:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 13:59:03,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 507 transitions. [2023-08-30 13:59:03,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4588235294117647 [2023-08-30 13:59:03,363 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 507 transitions. [2023-08-30 13:59:03,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 507 transitions. [2023-08-30 13:59:03,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:03,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 507 transitions. [2023-08-30 13:59:03,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 0 states have call successors, (0), 0 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 13:59:03,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 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 13:59:03,366 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 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 13:59:03,367 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 326 flow. Second operand 5 states and 507 transitions. [2023-08-30 13:59:03,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 633 flow [2023-08-30 13:59:03,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 607 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 13:59:03,371 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 323 flow [2023-08-30 13:59:03,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-08-30 13:59:03,372 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-08-30 13:59:03,372 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 323 flow [2023-08-30 13:59:03,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 13:59:03,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:03,372 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:03,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 13:59:03,373 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:03,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:03,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1895118489, now seen corresponding path program 1 times [2023-08-30 13:59:03,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:03,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184477608] [2023-08-30 13:59:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:03,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:03,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:03,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184477608] [2023-08-30 13:59:03,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184477608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:03,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:59:03,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 13:59:03,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560249041] [2023-08-30 13:59:03,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:03,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:59:03,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:03,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:59:03,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:59:03,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 221 [2023-08-30 13:59:03,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 323 flow. Second operand has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 13:59:03,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:03,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 221 [2023-08-30 13:59:03,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:03,652 INFO L130 PetriNetUnfolder]: 225/532 cut-off events. [2023-08-30 13:59:03,652 INFO L131 PetriNetUnfolder]: For 1267/1267 co-relation queries the response was YES. [2023-08-30 13:59:03,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 532 events. 225/532 cut-off events. For 1267/1267 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2186 event pairs, 94 based on Foata normal form. 4/535 useless extension candidates. Maximal degree in co-relation 2009. Up to 333 conditions per place. [2023-08-30 13:59:03,656 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 50 selfloop transitions, 10 changer transitions 16/78 dead transitions. [2023-08-30 13:59:03,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 647 flow [2023-08-30 13:59:03,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 13:59:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 13:59:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 666 transitions. [2023-08-30 13:59:03,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305106658047835 [2023-08-30 13:59:03,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 666 transitions. [2023-08-30 13:59:03,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 666 transitions. [2023-08-30 13:59:03,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:03,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 666 transitions. [2023-08-30 13:59:03,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.14285714285714) internal successors, (666), 7 states have internal predecessors, (666), 0 states have call successors, (0), 0 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 13:59:03,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 221.0) internal successors, (1768), 8 states have internal predecessors, (1768), 0 states have call successors, (0), 0 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 13:59:03,663 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 221.0) internal successors, (1768), 8 states have internal predecessors, (1768), 0 states have call successors, (0), 0 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 13:59:03,663 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 323 flow. Second operand 7 states and 666 transitions. [2023-08-30 13:59:03,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 647 flow [2023-08-30 13:59:03,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 641 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:59:03,672 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 368 flow [2023-08-30 13:59:03,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2023-08-30 13:59:03,673 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-08-30 13:59:03,673 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 368 flow [2023-08-30 13:59:03,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 13:59:03,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:03,674 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:03,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 13:59:03,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:03,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash -801990731, now seen corresponding path program 1 times [2023-08-30 13:59:03,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:03,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658186733] [2023-08-30 13:59:03,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:03,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:03,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:03,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658186733] [2023-08-30 13:59:03,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658186733] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:03,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262043810] [2023-08-30 13:59:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:03,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:03,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:03,794 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:59:03,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 13:59:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:03,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 13:59:03,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:03,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:04,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262043810] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:04,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:04,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 13:59:04,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783056699] [2023-08-30 13:59:04,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:04,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 13:59:04,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:04,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 13:59:04,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 13:59:04,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-08-30 13:59:04,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 368 flow. Second operand has 18 states, 18 states have (on average 92.83333333333333) internal successors, (1671), 18 states have internal predecessors, (1671), 0 states have call successors, (0), 0 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 13:59:04,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:04,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-08-30 13:59:04,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:04,311 INFO L130 PetriNetUnfolder]: 267/632 cut-off events. [2023-08-30 13:59:04,311 INFO L131 PetriNetUnfolder]: For 1853/1853 co-relation queries the response was YES. [2023-08-30 13:59:04,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2441 conditions, 632 events. 267/632 cut-off events. For 1853/1853 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2757 event pairs, 106 based on Foata normal form. 26/657 useless extension candidates. Maximal degree in co-relation 2408. Up to 204 conditions per place. [2023-08-30 13:59:04,315 INFO L137 encePairwiseOnDemand]: 212/221 looper letters, 63 selfloop transitions, 25 changer transitions 17/107 dead transitions. [2023-08-30 13:59:04,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 908 flow [2023-08-30 13:59:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 13:59:04,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 13:59:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1437 transitions. [2023-08-30 13:59:04,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334841628959276 [2023-08-30 13:59:04,319 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1437 transitions. [2023-08-30 13:59:04,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1437 transitions. [2023-08-30 13:59:04,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:04,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1437 transitions. [2023-08-30 13:59:04,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 95.8) internal successors, (1437), 15 states have internal predecessors, (1437), 0 states have call successors, (0), 0 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 13:59:04,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 221.0) internal successors, (3536), 16 states have internal predecessors, (3536), 0 states have call successors, (0), 0 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 13:59:04,328 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 221.0) internal successors, (3536), 16 states have internal predecessors, (3536), 0 states have call successors, (0), 0 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 13:59:04,328 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 368 flow. Second operand 15 states and 1437 transitions. [2023-08-30 13:59:04,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 908 flow [2023-08-30 13:59:04,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 902 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:59:04,335 INFO L231 Difference]: Finished difference. Result has 76 places, 54 transitions, 496 flow [2023-08-30 13:59:04,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=496, PETRI_PLACES=76, PETRI_TRANSITIONS=54} [2023-08-30 13:59:04,335 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2023-08-30 13:59:04,336 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 54 transitions, 496 flow [2023-08-30 13:59:04,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 92.83333333333333) internal successors, (1671), 18 states have internal predecessors, (1671), 0 states have call successors, (0), 0 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 13:59:04,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:04,337 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2023-08-30 13:59:04,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 13:59:04,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 13:59:04,542 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:04,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:04,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1155858341, now seen corresponding path program 2 times [2023-08-30 13:59:04,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:04,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056249658] [2023-08-30 13:59:04,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:04,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:04,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:04,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056249658] [2023-08-30 13:59:04,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056249658] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:04,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596098276] [2023-08-30 13:59:04,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:59:04,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:04,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:04,652 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:59:04,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 13:59:04,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:59:04,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:04,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 13:59:04,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:04,848 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:04,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:04,972 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:04,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596098276] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:04,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:04,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 25 [2023-08-30 13:59:04,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221618223] [2023-08-30 13:59:04,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:04,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 13:59:04,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:04,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 13:59:04,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2023-08-30 13:59:05,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 221 [2023-08-30 13:59:05,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 54 transitions, 496 flow. Second operand has 25 states, 25 states have (on average 91.08) internal successors, (2277), 25 states have internal predecessors, (2277), 0 states have call successors, (0), 0 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 13:59:05,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:05,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 221 [2023-08-30 13:59:05,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:05,771 INFO L130 PetriNetUnfolder]: 272/701 cut-off events. [2023-08-30 13:59:05,772 INFO L131 PetriNetUnfolder]: For 3294/3294 co-relation queries the response was YES. [2023-08-30 13:59:05,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3085 conditions, 701 events. 272/701 cut-off events. For 3294/3294 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2819 event pairs, 44 based on Foata normal form. 32/733 useless extension candidates. Maximal degree in co-relation 3050. Up to 157 conditions per place. [2023-08-30 13:59:05,777 INFO L137 encePairwiseOnDemand]: 211/221 looper letters, 172 selfloop transitions, 67 changer transitions 38/279 dead transitions. [2023-08-30 13:59:05,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 279 transitions, 2736 flow [2023-08-30 13:59:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-30 13:59:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-30 13:59:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3578 transitions. [2023-08-30 13:59:05,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4260538223386521 [2023-08-30 13:59:05,787 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3578 transitions. [2023-08-30 13:59:05,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3578 transitions. [2023-08-30 13:59:05,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:05,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3578 transitions. [2023-08-30 13:59:05,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 94.15789473684211) internal successors, (3578), 38 states have internal predecessors, (3578), 0 states have call successors, (0), 0 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 13:59:05,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 221.0) internal successors, (8619), 39 states have internal predecessors, (8619), 0 states have call successors, (0), 0 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 13:59:05,809 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 221.0) internal successors, (8619), 39 states have internal predecessors, (8619), 0 states have call successors, (0), 0 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 13:59:05,809 INFO L175 Difference]: Start difference. First operand has 76 places, 54 transitions, 496 flow. Second operand 38 states and 3578 transitions. [2023-08-30 13:59:05,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 279 transitions, 2736 flow [2023-08-30 13:59:05,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 279 transitions, 2612 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-08-30 13:59:05,822 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 1202 flow [2023-08-30 13:59:05,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1202, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2023-08-30 13:59:05,823 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2023-08-30 13:59:05,823 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 1202 flow [2023-08-30 13:59:05,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 91.08) internal successors, (2277), 25 states have internal predecessors, (2277), 0 states have call successors, (0), 0 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 13:59:05,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:05,824 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:05,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 13:59:06,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:06,030 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:06,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:06,030 INFO L85 PathProgramCache]: Analyzing trace with hash 907417041, now seen corresponding path program 1 times [2023-08-30 13:59:06,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:06,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501934043] [2023-08-30 13:59:06,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:06,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:06,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:06,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501934043] [2023-08-30 13:59:06,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501934043] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:06,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544060217] [2023-08-30 13:59:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:06,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:06,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:06,173 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:59:06,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 13:59:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:06,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 13:59:06,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-30 13:59:06,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-30 13:59:06,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544060217] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:06,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:06,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 16 [2023-08-30 13:59:06,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610120401] [2023-08-30 13:59:06,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:06,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 13:59:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:06,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 13:59:06,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-08-30 13:59:06,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 13:59:06,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 1202 flow. Second operand has 16 states, 16 states have (on average 87.5) internal successors, (1400), 16 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 13:59:06,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:06,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 13:59:06,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:07,593 INFO L130 PetriNetUnfolder]: 402/1097 cut-off events. [2023-08-30 13:59:07,593 INFO L131 PetriNetUnfolder]: For 10910/10910 co-relation queries the response was YES. [2023-08-30 13:59:07,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5625 conditions, 1097 events. 402/1097 cut-off events. For 10910/10910 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4452 event pairs, 44 based on Foata normal form. 80/1177 useless extension candidates. Maximal degree in co-relation 5579. Up to 263 conditions per place. [2023-08-30 13:59:07,605 INFO L137 encePairwiseOnDemand]: 209/221 looper letters, 244 selfloop transitions, 159 changer transitions 20/425 dead transitions. [2023-08-30 13:59:07,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 425 transitions, 4622 flow [2023-08-30 13:59:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-08-30 13:59:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-08-30 13:59:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 6108 transitions. [2023-08-30 13:59:07,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40055085579382255 [2023-08-30 13:59:07,617 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 6108 transitions. [2023-08-30 13:59:07,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 6108 transitions. [2023-08-30 13:59:07,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:07,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 6108 transitions. [2023-08-30 13:59:07,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 88.52173913043478) internal successors, (6108), 69 states have internal predecessors, (6108), 0 states have call successors, (0), 0 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 13:59:07,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 221.0) internal successors, (15470), 70 states have internal predecessors, (15470), 0 states have call successors, (0), 0 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 13:59:07,654 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 221.0) internal successors, (15470), 70 states have internal predecessors, (15470), 0 states have call successors, (0), 0 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 13:59:07,654 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 1202 flow. Second operand 69 states and 6108 transitions. [2023-08-30 13:59:07,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 425 transitions, 4622 flow [2023-08-30 13:59:07,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 425 transitions, 4316 flow, removed 85 selfloop flow, removed 16 redundant places. [2023-08-30 13:59:07,686 INFO L231 Difference]: Finished difference. Result has 192 places, 228 transitions, 2968 flow [2023-08-30 13:59:07,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=2968, PETRI_PLACES=192, PETRI_TRANSITIONS=228} [2023-08-30 13:59:07,687 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2023-08-30 13:59:07,687 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 228 transitions, 2968 flow [2023-08-30 13:59:07,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.5) internal successors, (1400), 16 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 13:59:07,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:07,688 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:07,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 13:59:07,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:07,894 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:07,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:07,894 INFO L85 PathProgramCache]: Analyzing trace with hash 97901477, now seen corresponding path program 2 times [2023-08-30 13:59:07,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:07,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373443921] [2023-08-30 13:59:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:07,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:08,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:08,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373443921] [2023-08-30 13:59:08,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373443921] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:08,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994487917] [2023-08-30 13:59:08,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:59:08,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:08,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:08,097 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:59:08,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 13:59:08,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:59:08,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:08,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 13:59:08,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-30 13:59:08,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-30 13:59:08,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994487917] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:08,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:08,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 25 [2023-08-30 13:59:08,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092934255] [2023-08-30 13:59:08,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:08,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 13:59:08,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:08,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 13:59:08,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-08-30 13:59:08,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 13:59:08,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 228 transitions, 2968 flow. Second operand has 25 states, 25 states have (on average 86.68) internal successors, (2167), 25 states have internal predecessors, (2167), 0 states have call successors, (0), 0 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 13:59:08,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:08,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 13:59:08,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:10,745 INFO L130 PetriNetUnfolder]: 747/2044 cut-off events. [2023-08-30 13:59:10,745 INFO L131 PetriNetUnfolder]: For 52489/52489 co-relation queries the response was YES. [2023-08-30 13:59:10,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13454 conditions, 2044 events. 747/2044 cut-off events. For 52489/52489 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9899 event pairs, 41 based on Foata normal form. 112/2156 useless extension candidates. Maximal degree in co-relation 13384. Up to 517 conditions per place. [2023-08-30 13:59:10,773 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 266 selfloop transitions, 392 changer transitions 26/686 dead transitions. [2023-08-30 13:59:10,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 686 transitions, 9338 flow [2023-08-30 13:59:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-08-30 13:59:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-08-30 13:59:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 8502 transitions. [2023-08-30 13:59:10,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39660400242571253 [2023-08-30 13:59:10,792 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 8502 transitions. [2023-08-30 13:59:10,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 8502 transitions. [2023-08-30 13:59:10,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:10,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 8502 transitions. [2023-08-30 13:59:10,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 87.64948453608247) internal successors, (8502), 97 states have internal predecessors, (8502), 0 states have call successors, (0), 0 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 13:59:10,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 221.0) internal successors, (21658), 98 states have internal predecessors, (21658), 0 states have call successors, (0), 0 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 13:59:10,848 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 221.0) internal successors, (21658), 98 states have internal predecessors, (21658), 0 states have call successors, (0), 0 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 13:59:10,848 INFO L175 Difference]: Start difference. First operand has 192 places, 228 transitions, 2968 flow. Second operand 97 states and 8502 transitions. [2023-08-30 13:59:10,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 686 transitions, 9338 flow [2023-08-30 13:59:10,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 686 transitions, 8639 flow, removed 271 selfloop flow, removed 13 redundant places. [2023-08-30 13:59:11,008 INFO L231 Difference]: Finished difference. Result has 298 places, 432 transitions, 6113 flow [2023-08-30 13:59:11,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=2568, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=6113, PETRI_PLACES=298, PETRI_TRANSITIONS=432} [2023-08-30 13:59:11,009 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 269 predicate places. [2023-08-30 13:59:11,009 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 432 transitions, 6113 flow [2023-08-30 13:59:11,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 86.68) internal successors, (2167), 25 states have internal predecessors, (2167), 0 states have call successors, (0), 0 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 13:59:11,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:11,010 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 7, 1, 1, 1, 1] [2023-08-30 13:59:11,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 13:59:11,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 13:59:11,218 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:11,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2098528539, now seen corresponding path program 2 times [2023-08-30 13:59:11,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:11,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660368743] [2023-08-30 13:59:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:11,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:11,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:11,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660368743] [2023-08-30 13:59:11,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660368743] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:11,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098829118] [2023-08-30 13:59:11,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:59:11,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:11,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:11,397 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:59:11,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 13:59:11,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:59:11,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:11,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 13:59:11,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:11,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:11,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098829118] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:11,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:11,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-30 13:59:11,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476946110] [2023-08-30 13:59:11,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:11,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 13:59:11,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:11,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 13:59:11,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2023-08-30 13:59:11,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-08-30 13:59:11,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 432 transitions, 6113 flow. Second operand has 19 states, 19 states have (on average 107.73684210526316) internal successors, (2047), 19 states have internal predecessors, (2047), 0 states have call successors, (0), 0 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 13:59:11,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:11,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-08-30 13:59:11,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:13,387 INFO L130 PetriNetUnfolder]: 1391/4351 cut-off events. [2023-08-30 13:59:13,387 INFO L131 PetriNetUnfolder]: For 436607/436616 co-relation queries the response was YES. [2023-08-30 13:59:13,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38435 conditions, 4351 events. 1391/4351 cut-off events. For 436607/436616 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 23799 event pairs, 89 based on Foata normal form. 579/4930 useless extension candidates. Maximal degree in co-relation 38346. Up to 940 conditions per place. [2023-08-30 13:59:13,460 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 830 selfloop transitions, 116 changer transitions 29/995 dead transitions. [2023-08-30 13:59:13,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 995 transitions, 16521 flow [2023-08-30 13:59:13,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 13:59:13,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 13:59:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2060 transitions. [2023-08-30 13:59:13,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178481649069885 [2023-08-30 13:59:13,463 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2060 transitions. [2023-08-30 13:59:13,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2060 transitions. [2023-08-30 13:59:13,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:13,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2060 transitions. [2023-08-30 13:59:13,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 114.44444444444444) internal successors, (2060), 18 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 13:59:13,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 221.0) internal successors, (4199), 19 states have internal predecessors, (4199), 0 states have call successors, (0), 0 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 13:59:13,472 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 221.0) internal successors, (4199), 19 states have internal predecessors, (4199), 0 states have call successors, (0), 0 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 13:59:13,472 INFO L175 Difference]: Start difference. First operand has 298 places, 432 transitions, 6113 flow. Second operand 18 states and 2060 transitions. [2023-08-30 13:59:13,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 995 transitions, 16521 flow [2023-08-30 13:59:13,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 995 transitions, 15516 flow, removed 278 selfloop flow, removed 22 redundant places. [2023-08-30 13:59:13,806 INFO L231 Difference]: Finished difference. Result has 301 places, 440 transitions, 6228 flow [2023-08-30 13:59:13,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=5554, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6228, PETRI_PLACES=301, PETRI_TRANSITIONS=440} [2023-08-30 13:59:13,807 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 272 predicate places. [2023-08-30 13:59:13,807 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 440 transitions, 6228 flow [2023-08-30 13:59:13,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.73684210526316) internal successors, (2047), 19 states have internal predecessors, (2047), 0 states have call successors, (0), 0 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 13:59:13,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:13,808 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 17, 16, 12, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:13,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 13:59:14,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 13:59:14,009 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:14,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:14,009 INFO L85 PathProgramCache]: Analyzing trace with hash -743466793, now seen corresponding path program 3 times [2023-08-30 13:59:14,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:14,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646127189] [2023-08-30 13:59:14,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:14,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646127189] [2023-08-30 13:59:14,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646127189] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94299189] [2023-08-30 13:59:14,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:59:14,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:14,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:14,485 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:59:14,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 13:59:14,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-30 13:59:14,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:14,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 13:59:14,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 32 proven. 262 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-08-30 13:59:14,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 32 proven. 262 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-08-30 13:59:15,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94299189] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:15,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:15,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 39 [2023-08-30 13:59:15,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319540269] [2023-08-30 13:59:15,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:15,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-30 13:59:15,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:15,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-30 13:59:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1197, Unknown=0, NotChecked=0, Total=1482 [2023-08-30 13:59:15,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 13:59:15,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 440 transitions, 6228 flow. Second operand has 39 states, 39 states have (on average 86.53846153846153) internal successors, (3375), 39 states have internal predecessors, (3375), 0 states have call successors, (0), 0 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 13:59:15,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:15,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 13:59:15,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:26,784 INFO L130 PetriNetUnfolder]: 2894/7957 cut-off events. [2023-08-30 13:59:26,784 INFO L131 PetriNetUnfolder]: For 673877/673877 co-relation queries the response was YES. [2023-08-30 13:59:26,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77005 conditions, 7957 events. 2894/7957 cut-off events. For 673877/673877 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 45939 event pairs, 72 based on Foata normal form. 193/8150 useless extension candidates. Maximal degree in co-relation 76911. Up to 1977 conditions per place. [2023-08-30 13:59:26,880 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 1320 selfloop transitions, 1307 changer transitions 259/2888 dead transitions. [2023-08-30 13:59:26,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 2888 transitions, 47332 flow [2023-08-30 13:59:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 413 states. [2023-08-30 13:59:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2023-08-30 13:59:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 36435 transitions. [2023-08-30 13:59:26,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39918705422194956 [2023-08-30 13:59:26,931 INFO L72 ComplementDD]: Start complementDD. Operand 413 states and 36435 transitions. [2023-08-30 13:59:26,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 413 states and 36435 transitions. [2023-08-30 13:59:26,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:26,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 413 states and 36435 transitions. [2023-08-30 13:59:27,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 414 states, 413 states have (on average 88.22033898305085) internal successors, (36435), 413 states have internal predecessors, (36435), 0 states have call successors, (0), 0 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 13:59:27,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 414 states, 414 states have (on average 221.0) internal successors, (91494), 414 states have internal predecessors, (91494), 0 states have call successors, (0), 0 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 13:59:27,143 INFO L81 ComplementDD]: Finished complementDD. Result has 414 states, 414 states have (on average 221.0) internal successors, (91494), 414 states have internal predecessors, (91494), 0 states have call successors, (0), 0 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 13:59:27,143 INFO L175 Difference]: Start difference. First operand has 301 places, 440 transitions, 6228 flow. Second operand 413 states and 36435 transitions. [2023-08-30 13:59:27,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 2888 transitions, 47332 flow [2023-08-30 13:59:27,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 2888 transitions, 41999 flow, removed 2142 selfloop flow, removed 9 redundant places. [2023-08-30 13:59:27,986 INFO L231 Difference]: Finished difference. Result has 833 places, 1409 transitions, 25608 flow [2023-08-30 13:59:27,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=5650, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=413, PETRI_FLOW=25608, PETRI_PLACES=833, PETRI_TRANSITIONS=1409} [2023-08-30 13:59:27,987 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 804 predicate places. [2023-08-30 13:59:27,987 INFO L495 AbstractCegarLoop]: Abstraction has has 833 places, 1409 transitions, 25608 flow [2023-08-30 13:59:27,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 86.53846153846153) internal successors, (3375), 39 states have internal predecessors, (3375), 0 states have call successors, (0), 0 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 13:59:27,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:27,988 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 18, 17, 9, 9, 9, 9, 1, 1, 1, 1] [2023-08-30 13:59:27,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 13:59:28,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 13:59:28,194 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:28,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:28,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1894708907, now seen corresponding path program 3 times [2023-08-30 13:59:28,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:28,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581002218] [2023-08-30 13:59:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:28,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:28,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:28,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581002218] [2023-08-30 13:59:28,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581002218] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:28,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120680701] [2023-08-30 13:59:28,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:59:28,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:28,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:28,617 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:59:28,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 13:59:28,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-08-30 13:59:28,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:28,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 13:59:28,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 34 proven. 506 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-08-30 13:59:29,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 34 proven. 506 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-08-30 13:59:29,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120680701] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:29,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:29,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 58 [2023-08-30 13:59:29,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013015829] [2023-08-30 13:59:29,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:29,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-30 13:59:29,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-30 13:59:29,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=2697, Unknown=0, NotChecked=0, Total=3306 [2023-08-30 13:59:30,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 221 [2023-08-30 13:59:30,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 833 places, 1409 transitions, 25608 flow. Second operand has 58 states, 58 states have (on average 91.06896551724138) internal successors, (5282), 58 states have internal predecessors, (5282), 0 states have call successors, (0), 0 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 13:59:30,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:30,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 221 [2023-08-30 13:59:30,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:36,798 INFO L130 PetriNetUnfolder]: 2719/8152 cut-off events. [2023-08-30 13:59:36,798 INFO L131 PetriNetUnfolder]: For 913008/913008 co-relation queries the response was YES. [2023-08-30 13:59:36,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80557 conditions, 8152 events. 2719/8152 cut-off events. For 913008/913008 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 48891 event pairs, 109 based on Foata normal form. 144/8296 useless extension candidates. Maximal degree in co-relation 80334. Up to 2138 conditions per place. [2023-08-30 13:59:36,952 INFO L137 encePairwiseOnDemand]: 211/221 looper letters, 1191 selfloop transitions, 823 changer transitions 84/2100 dead transitions. [2023-08-30 13:59:36,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 2100 transitions, 42959 flow [2023-08-30 13:59:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-08-30 13:59:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2023-08-30 13:59:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 9678 transitions. [2023-08-30 13:59:36,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42516364275359136 [2023-08-30 13:59:36,963 INFO L72 ComplementDD]: Start complementDD. Operand 103 states and 9678 transitions. [2023-08-30 13:59:36,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 9678 transitions. [2023-08-30 13:59:36,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:36,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 103 states and 9678 transitions. [2023-08-30 13:59:36,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 104 states, 103 states have (on average 93.96116504854369) internal successors, (9678), 103 states have internal predecessors, (9678), 0 states have call successors, (0), 0 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 13:59:37,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 104 states, 104 states have (on average 221.0) internal successors, (22984), 104 states have internal predecessors, (22984), 0 states have call successors, (0), 0 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 13:59:37,010 INFO L81 ComplementDD]: Finished complementDD. Result has 104 states, 104 states have (on average 221.0) internal successors, (22984), 104 states have internal predecessors, (22984), 0 states have call successors, (0), 0 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 13:59:37,010 INFO L175 Difference]: Start difference. First operand has 833 places, 1409 transitions, 25608 flow. Second operand 103 states and 9678 transitions. [2023-08-30 13:59:37,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 935 places, 2100 transitions, 42959 flow [2023-08-30 13:59:40,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 2100 transitions, 37956 flow, removed 1890 selfloop flow, removed 62 redundant places. [2023-08-30 13:59:40,636 INFO L231 Difference]: Finished difference. Result has 897 places, 1566 transitions, 27217 flow [2023-08-30 13:59:40,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=21070, PETRI_DIFFERENCE_MINUEND_PLACES=771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=677, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=27217, PETRI_PLACES=897, PETRI_TRANSITIONS=1566} [2023-08-30 13:59:40,638 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 868 predicate places. [2023-08-30 13:59:40,638 INFO L495 AbstractCegarLoop]: Abstraction has has 897 places, 1566 transitions, 27217 flow [2023-08-30 13:59:40,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 91.06896551724138) internal successors, (5282), 58 states have internal predecessors, (5282), 0 states have call successors, (0), 0 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 13:59:40,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:40,639 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 12, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:40,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 13:59:40,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 13:59:40,840 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:59:40,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:40,840 INFO L85 PathProgramCache]: Analyzing trace with hash -987967957, now seen corresponding path program 4 times [2023-08-30 13:59:40,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:40,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492036516] [2023-08-30 13:59:40,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:40,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:59:41,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492036516] [2023-08-30 13:59:41,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492036516] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938292499] [2023-08-30 13:59:41,310 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 13:59:41,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:41,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:41,313 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:59:41,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 13:59:41,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 13:59:41,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:41,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 13:59:41,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 344 proven. 134 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-08-30 13:59:41,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 344 proven. 134 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-08-30 13:59:42,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938292499] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:42,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:42,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 49 [2023-08-30 13:59:42,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798368698] [2023-08-30 13:59:42,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:42,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-30 13:59:42,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:42,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-30 13:59:42,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1928, Unknown=0, NotChecked=0, Total=2352 [2023-08-30 13:59:42,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 13:59:42,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 1566 transitions, 27217 flow. Second operand has 49 states, 49 states have (on average 86.44897959183673) internal successors, (4236), 49 states have internal predecessors, (4236), 0 states have call successors, (0), 0 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 13:59:42,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:42,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 13:59:42,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:00:05,727 INFO L130 PetriNetUnfolder]: 4450/13490 cut-off events. [2023-08-30 14:00:05,727 INFO L131 PetriNetUnfolder]: For 2128769/2128769 co-relation queries the response was YES. [2023-08-30 14:00:05,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135256 conditions, 13490 events. 4450/13490 cut-off events. For 2128769/2128769 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 93376 event pairs, 136 based on Foata normal form. 311/13801 useless extension candidates. Maximal degree in co-relation 135007. Up to 3511 conditions per place. [2023-08-30 14:00:06,016 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 1829 selfloop transitions, 2564 changer transitions 43/4438 dead transitions. [2023-08-30 14:00:06,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1420 places, 4438 transitions, 90382 flow [2023-08-30 14:00:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 535 states. [2023-08-30 14:00:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2023-08-30 14:00:06,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 47067 transitions. [2023-08-30 14:00:06,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3980800947266038 [2023-08-30 14:00:06,061 INFO L72 ComplementDD]: Start complementDD. Operand 535 states and 47067 transitions. [2023-08-30 14:00:06,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 535 states and 47067 transitions. [2023-08-30 14:00:06,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:00:06,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 535 states and 47067 transitions. [2023-08-30 14:00:06,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 536 states, 535 states have (on average 87.97570093457944) internal successors, (47067), 535 states have internal predecessors, (47067), 0 states have call successors, (0), 0 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 14:00:06,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 536 states, 536 states have (on average 221.0) internal successors, (118456), 536 states have internal predecessors, (118456), 0 states have call successors, (0), 0 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 14:00:06,245 INFO L81 ComplementDD]: Finished complementDD. Result has 536 states, 536 states have (on average 221.0) internal successors, (118456), 536 states have internal predecessors, (118456), 0 states have call successors, (0), 0 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 14:00:06,245 INFO L175 Difference]: Start difference. First operand has 897 places, 1566 transitions, 27217 flow. Second operand 535 states and 47067 transitions. [2023-08-30 14:00:06,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1420 places, 4438 transitions, 90382 flow [2023-08-30 14:00:14,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1387 places, 4438 transitions, 85604 flow, removed 2187 selfloop flow, removed 33 redundant places. [2023-08-30 14:00:14,286 INFO L231 Difference]: Finished difference. Result has 1572 places, 2785 transitions, 60663 flow [2023-08-30 14:00:14,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=25692, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1373, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=535, PETRI_FLOW=60663, PETRI_PLACES=1572, PETRI_TRANSITIONS=2785} [2023-08-30 14:00:14,288 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1543 predicate places. [2023-08-30 14:00:14,288 INFO L495 AbstractCegarLoop]: Abstraction has has 1572 places, 2785 transitions, 60663 flow [2023-08-30 14:00:14,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 86.44897959183673) internal successors, (4236), 49 states have internal predecessors, (4236), 0 states have call successors, (0), 0 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 14:00:14,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:00:14,289 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 19, 11, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:00:14,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 14:00:14,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:00:14,489 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 14:00:14,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:00:14,490 INFO L85 PathProgramCache]: Analyzing trace with hash -416934563, now seen corresponding path program 5 times [2023-08-30 14:00:14,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:00:14,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431719037] [2023-08-30 14:00:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:00:14,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:00:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:00:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:00:15,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:00:15,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431719037] [2023-08-30 14:00:15,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431719037] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:00:15,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109460089] [2023-08-30 14:00:15,026 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 14:00:15,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:00:15,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:00:15,027 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:00:15,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 14:00:15,214 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-08-30 14:00:15,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:00:15,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 14:00:15,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:00:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 390 proven. 296 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-08-30 14:00:15,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:00:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 390 proven. 296 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-08-30 14:00:15,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109460089] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:00:15,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:00:15,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 58 [2023-08-30 14:00:15,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600796089] [2023-08-30 14:00:15,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:00:15,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-30 14:00:15,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:00:15,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-30 14:00:15,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=2729, Unknown=0, NotChecked=0, Total=3306 [2023-08-30 14:00:16,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 14:00:16,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1572 places, 2785 transitions, 60663 flow. Second operand has 58 states, 58 states have (on average 86.41379310344827) internal successors, (5012), 58 states have internal predecessors, (5012), 0 states have call successors, (0), 0 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 14:00:16,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:00:16,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 14:00:16,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:01:03,364 INFO L130 PetriNetUnfolder]: 6454/19587 cut-off events. [2023-08-30 14:01:03,364 INFO L131 PetriNetUnfolder]: For 8193269/8193269 co-relation queries the response was YES. [2023-08-30 14:01:04,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275944 conditions, 19587 events. 6454/19587 cut-off events. For 8193269/8193269 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 148967 event pairs, 209 based on Foata normal form. 434/20021 useless extension candidates. Maximal degree in co-relation 275511. Up to 5083 conditions per place. [2023-08-30 14:01:04,576 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 2293 selfloop transitions, 3929 changer transitions 61/6285 dead transitions. [2023-08-30 14:01:04,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2253 places, 6285 transitions, 172618 flow [2023-08-30 14:01:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2023-08-30 14:01:04,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2023-08-30 14:01:04,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 60032 transitions. [2023-08-30 14:01:04,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977130439967405 [2023-08-30 14:01:04,623 INFO L72 ComplementDD]: Start complementDD. Operand 683 states and 60032 transitions. [2023-08-30 14:01:04,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 683 states and 60032 transitions. [2023-08-30 14:01:04,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:01:04,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 683 states and 60032 transitions. [2023-08-30 14:01:04,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 684 states, 683 states have (on average 87.89458272327965) internal successors, (60032), 683 states have internal predecessors, (60032), 0 states have call successors, (0), 0 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 14:01:05,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 684 states, 684 states have (on average 221.0) internal successors, (151164), 684 states have internal predecessors, (151164), 0 states have call successors, (0), 0 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 14:01:05,079 INFO L81 ComplementDD]: Finished complementDD. Result has 684 states, 684 states have (on average 221.0) internal successors, (151164), 684 states have internal predecessors, (151164), 0 states have call successors, (0), 0 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 14:01:05,079 INFO L175 Difference]: Start difference. First operand has 1572 places, 2785 transitions, 60663 flow. Second operand 683 states and 60032 transitions. [2023-08-30 14:01:05,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2253 places, 6285 transitions, 172618 flow [2023-08-30 14:01:54,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2225 places, 6285 transitions, 158987 flow, removed 6654 selfloop flow, removed 28 redundant places. [2023-08-30 14:01:54,304 INFO L231 Difference]: Finished difference. Result has 2423 places, 4181 transitions, 112641 flow [2023-08-30 14:01:54,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=52677, PETRI_DIFFERENCE_MINUEND_PLACES=1543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2577, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=683, PETRI_FLOW=112641, PETRI_PLACES=2423, PETRI_TRANSITIONS=4181} [2023-08-30 14:01:54,308 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2394 predicate places. [2023-08-30 14:01:54,309 INFO L495 AbstractCegarLoop]: Abstraction has has 2423 places, 4181 transitions, 112641 flow [2023-08-30 14:01:54,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 86.41379310344827) internal successors, (5012), 58 states have internal predecessors, (5012), 0 states have call successors, (0), 0 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 14:01:54,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:01:54,310 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 20, 14, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:01:54,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 14:01:54,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-08-30 14:01:54,516 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 14:01:54,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:01:54,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1203149103, now seen corresponding path program 6 times [2023-08-30 14:01:54,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:01:54,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602547331] [2023-08-30 14:01:54,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:01:54,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:01:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:01:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 0 proven. 889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:01:55,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:01:55,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602547331] [2023-08-30 14:01:55,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602547331] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:01:55,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830274189] [2023-08-30 14:01:55,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 14:01:55,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:01:55,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:01:55,081 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:01:55,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 14:01:55,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-08-30 14:01:55,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:01:55,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 14:01:55,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:01:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 40 proven. 447 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-08-30 14:01:55,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:01:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 40 proven. 447 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-08-30 14:01:55,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830274189] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:01:55,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:01:55,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 49 [2023-08-30 14:01:55,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635779892] [2023-08-30 14:01:55,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:01:55,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-30 14:01:55,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:01:55,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-30 14:01:55,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1930, Unknown=0, NotChecked=0, Total=2352 [2023-08-30 14:01:56,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 14:01:56,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2423 places, 4181 transitions, 112641 flow. Second operand has 49 states, 49 states have (on average 86.77551020408163) internal successors, (4252), 49 states have internal predecessors, (4252), 0 states have call successors, (0), 0 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 14:01:56,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:01:56,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 14:01:56,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:03:56,025 INFO L130 PetriNetUnfolder]: 13917/42001 cut-off events. [2023-08-30 14:03:56,025 INFO L131 PetriNetUnfolder]: For 38931729/38931729 co-relation queries the response was YES. [2023-08-30 14:04:03,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822298 conditions, 42001 events. 13917/42001 cut-off events. For 38931729/38931729 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 375413 event pairs, 388 based on Foata normal form. 785/42786 useless extension candidates. Maximal degree in co-relation 821668. Up to 11015 conditions per place. [2023-08-30 14:04:03,998 INFO L137 encePairwiseOnDemand]: 210/221 looper letters, 2630 selfloop transitions, 7860 changer transitions 118/10610 dead transitions. [2023-08-30 14:04:03,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2889 places, 10610 transitions, 365370 flow [2023-08-30 14:04:03,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 468 states. [2023-08-30 14:04:03,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2023-08-30 14:04:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 41114 transitions. [2023-08-30 14:04:04,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975132459295355 [2023-08-30 14:04:04,022 INFO L72 ComplementDD]: Start complementDD. Operand 468 states and 41114 transitions. [2023-08-30 14:04:04,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 468 states and 41114 transitions. [2023-08-30 14:04:04,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:04:04,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 468 states and 41114 transitions. [2023-08-30 14:04:04,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 469 states, 468 states have (on average 87.85042735042735) internal successors, (41114), 468 states have internal predecessors, (41114), 0 states have call successors, (0), 0 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 14:04:04,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 469 states, 469 states have (on average 221.0) internal successors, (103649), 469 states have internal predecessors, (103649), 0 states have call successors, (0), 0 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 14:04:04,302 INFO L81 ComplementDD]: Finished complementDD. Result has 469 states, 469 states have (on average 221.0) internal successors, (103649), 469 states have internal predecessors, (103649), 0 states have call successors, (0), 0 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 14:04:04,303 INFO L175 Difference]: Start difference. First operand has 2423 places, 4181 transitions, 112641 flow. Second operand 468 states and 41114 transitions. [2023-08-30 14:04:04,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2889 places, 10610 transitions, 365370 flow [2023-08-30 14:11:26,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2800 places, 10610 transitions, 303858 flow, removed 29791 selfloop flow, removed 89 redundant places. [2023-08-30 14:11:26,991 INFO L231 Difference]: Finished difference. Result has 2930 places, 8719 transitions, 264582 flow [2023-08-30 14:11:26,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=87922, PETRI_DIFFERENCE_MINUEND_PLACES=2333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3782, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=468, PETRI_FLOW=264582, PETRI_PLACES=2930, PETRI_TRANSITIONS=8719} [2023-08-30 14:11:26,997 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2901 predicate places. [2023-08-30 14:11:26,997 INFO L495 AbstractCegarLoop]: Abstraction has has 2930 places, 8719 transitions, 264582 flow [2023-08-30 14:11:26,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 86.77551020408163) internal successors, (4252), 49 states have internal predecessors, (4252), 0 states have call successors, (0), 0 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 14:11:26,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:26,998 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 22, 21, 12, 12, 12, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:27,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 14:11:27,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:11:27,205 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 14:11:27,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:27,206 INFO L85 PathProgramCache]: Analyzing trace with hash -994563883, now seen corresponding path program 7 times [2023-08-30 14:11:27,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:27,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605056037] [2023-08-30 14:11:27,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:27,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:11:27,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:27,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605056037] [2023-08-30 14:11:27,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605056037] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:11:27,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600837538] [2023-08-30 14:11:27,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 14:11:27,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:11:27,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:11:27,770 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:11:27,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 14:11:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:27,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 14:11:27,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:11:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 474 proven. 414 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-08-30 14:11:28,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:11:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 474 proven. 414 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-08-30 14:11:29,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600837538] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:11:29,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:11:29,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 72 [2023-08-30 14:11:29,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775930482] [2023-08-30 14:11:29,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:11:29,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-08-30 14:11:29,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:29,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-08-30 14:11:29,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=4232, Unknown=0, NotChecked=0, Total=5112 [2023-08-30 14:11:29,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 221 [2023-08-30 14:11:29,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2930 places, 8719 transitions, 264582 flow. Second operand has 72 states, 72 states have (on average 86.30555555555556) internal successors, (6214), 72 states have internal predecessors, (6214), 0 states have call successors, (0), 0 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 14:11:29,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:29,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 221 [2023-08-30 14:11:29,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15