./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-complex/safestack_relacy.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/pthread-complex/safestack_relacy.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 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --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 13:11:25,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:11:25,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:11:25,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:11:25,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:11:25,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:11:25,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:11:25,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:11:25,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:11:25,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:11:25,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:11:25,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:11:25,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:11:25,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:11:25,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:11:25,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:11:25,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:11:25,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:11:25,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:11:25,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:11:25,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:11:25,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:11:25,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:11:25,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:11:25,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:11:25,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:11:25,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:11:25,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:11:25,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:11:25,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:11:25,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:11:25,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:11:25,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:11:25,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:11:25,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:11:25,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:11:25,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:11:25,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:11:25,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:11:25,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:11:25,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:11:25,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:11:25,271 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:11:25,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:11:25,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:11:25,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:11:25,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:11:25,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:11:25,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:11:25,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:11:25,275 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:11:25,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:11:25,276 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:11:25,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:11:25,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:11:25,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:11:25,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:11:25,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:11:25,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:11:25,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:11:25,277 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:11:25,278 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:11:25,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:11:25,278 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:11:25,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:11:25,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:11:25,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:11:25,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:11:25,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:11:25,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:11:25,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:11:25,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:11:25,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:11:25,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:11:25,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:11:25,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:11:25,281 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:11:25,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:11:25,281 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:11:25,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:11:25,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:11:25,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:11:25,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:11:25,567 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:11:25,568 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:11:25,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/safestack_relacy.i [2023-08-30 13:11:26,631 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:11:26,977 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:11:26,978 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i [2023-08-30 13:11:26,992 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f6e179a5/e3be5c05c462488a97e2b0e05fb898ff/FLAG52cf02467 [2023-08-30 13:11:27,006 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f6e179a5/e3be5c05c462488a97e2b0e05fb898ff [2023-08-30 13:11:27,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:11:27,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:11:27,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:11:27,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:11:27,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:11:27,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:27,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc86c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27, skipping insertion in model container [2023-08-30 13:11:27,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:27,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:11:27,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:11:27,594 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i[78860,78873] [2023-08-30 13:11:27,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:11:27,610 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:11:27,725 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i[78860,78873] [2023-08-30 13:11:27,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:11:27,849 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:11:27,849 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:11:27,855 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:11:27,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27 WrapperNode [2023-08-30 13:11:27,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:11:27,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:11:27,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:11:27,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:11:27,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:27,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:27,954 INFO L138 Inliner]: procedures = 481, calls = 74, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 299 [2023-08-30 13:11:27,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:11:27,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:11:27,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:11:27,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:11:27,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:27,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:27,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:27,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:27,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:28,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:28,022 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:28,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:28,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:11:28,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:11:28,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:11:28,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:11:28,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27" (1/1) ... [2023-08-30 13:11:28,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:11:28,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:11:28,060 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 13:11:28,069 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 13:11:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 13:11:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:11:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 13:11:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 13:11:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:11:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-08-30 13:11:28,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-08-30 13:11:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:11:28,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:11:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:11:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:11:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 13:11:28,099 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 13:11:28,434 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:11:28,437 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:11:28,755 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:11:28,862 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:11:28,862 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-30 13:11:28,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:11:28 BoogieIcfgContainer [2023-08-30 13:11:28,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:11:28,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:11:28,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:11:28,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:11:28,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:11:27" (1/3) ... [2023-08-30 13:11:28,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f16a51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:11:28, skipping insertion in model container [2023-08-30 13:11:28,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:11:27" (2/3) ... [2023-08-30 13:11:28,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f16a51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:11:28, skipping insertion in model container [2023-08-30 13:11:28,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:11:28" (3/3) ... [2023-08-30 13:11:28,875 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2023-08-30 13:11:28,882 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:11:28,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:11:28,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 13:11:28,890 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:11:29,007 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 13:11:29,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 275 transitions, 558 flow [2023-08-30 13:11:29,177 INFO L130 PetriNetUnfolder]: 19/289 cut-off events. [2023-08-30 13:11:29,178 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 13:11:29,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 289 events. 19/289 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 520 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 189. Up to 4 conditions per place. [2023-08-30 13:11:29,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 275 transitions, 558 flow [2023-08-30 13:11:29,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 271 transitions, 550 flow [2023-08-30 13:11:29,200 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:11:29,215 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 271 transitions, 550 flow [2023-08-30 13:11:29,219 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 271 transitions, 550 flow [2023-08-30 13:11:29,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 271 transitions, 550 flow [2023-08-30 13:11:29,274 INFO L130 PetriNetUnfolder]: 18/285 cut-off events. [2023-08-30 13:11:29,274 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 13:11:29,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 285 events. 18/285 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 506 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 189. Up to 4 conditions per place. [2023-08-30 13:11:29,282 INFO L119 LiptonReduction]: Number of co-enabled transitions 7968 [2023-08-30 13:11:36,629 INFO L134 LiptonReduction]: Checked pairs total: 8858 [2023-08-30 13:11:36,630 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-08-30 13:11:36,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:11:36,646 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;@51716d2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:11:36,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 13:11:36,649 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 13:11:36,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:11:36,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:11:36,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 13:11:36,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 13:11:36,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:11:36,654 INFO L85 PathProgramCache]: Analyzing trace with hash 38518, now seen corresponding path program 1 times [2023-08-30 13:11:36,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:11:36,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932682334] [2023-08-30 13:11:36,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:36,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:11:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:36,965 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 13:11:36,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:11:36,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932682334] [2023-08-30 13:11:36,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932682334] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:11:36,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:11:36,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:11:36,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496755061] [2023-08-30 13:11:36,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:11:36,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:11:36,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:11:36,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:11:36,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:11:37,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 551 [2023-08-30 13:11:37,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:11:37,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 551 [2023-08-30 13:11:37,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:11:37,139 INFO L130 PetriNetUnfolder]: 147/294 cut-off events. [2023-08-30 13:11:37,140 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 13:11:37,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 294 events. 147/294 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 986 event pairs, 110 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 566. Up to 293 conditions per place. [2023-08-30 13:11:37,142 INFO L137 encePairwiseOnDemand]: 540/551 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 13:11:37,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 174 flow [2023-08-30 13:11:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:11:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:11:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 792 transitions. [2023-08-30 13:11:37,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791288566243194 [2023-08-30 13:11:37,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 792 transitions. [2023-08-30 13:11:37,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 792 transitions. [2023-08-30 13:11:37,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:11:37,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 792 transitions. [2023-08-30 13:11:37,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,192 INFO L175 Difference]: Start difference. First operand has 46 places, 52 transitions, 112 flow. Second operand 3 states and 792 transitions. [2023-08-30 13:11:37,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 174 flow [2023-08-30 13:11:37,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 13:11:37,197 INFO L231 Difference]: Finished difference. Result has 40 places, 42 transitions, 94 flow [2023-08-30 13:11:37,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2023-08-30 13:11:37,201 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-08-30 13:11:37,201 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 94 flow [2023-08-30 13:11:37,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:11:37,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 13:11:37,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 13:11:37,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 13:11:37,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:11:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash 39024, now seen corresponding path program 1 times [2023-08-30 13:11:37,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:11:37,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298498558] [2023-08-30 13:11:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:37,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:11:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:37,275 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 13:11:37,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:11:37,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298498558] [2023-08-30 13:11:37,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298498558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:11:37,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:11:37,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:11:37,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963504307] [2023-08-30 13:11:37,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:11:37,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:11:37,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:11:37,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:11:37,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:11:37,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 551 [2023-08-30 13:11:37,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:11:37,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 551 [2023-08-30 13:11:37,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:11:37,446 INFO L130 PetriNetUnfolder]: 293/586 cut-off events. [2023-08-30 13:11:37,446 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 13:11:37,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 586 events. 293/586 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2519 event pairs, 220 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 1176. Up to 294 conditions per place. [2023-08-30 13:11:37,449 INFO L137 encePairwiseOnDemand]: 548/551 looper letters, 78 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-30 13:11:37,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 81 transitions, 338 flow [2023-08-30 13:11:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:11:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:11:37,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2023-08-30 13:11:37,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49727767695099817 [2023-08-30 13:11:37,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2023-08-30 13:11:37,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2023-08-30 13:11:37,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:11:37,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2023-08-30 13:11:37,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,458 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 94 flow. Second operand 3 states and 822 transitions. [2023-08-30 13:11:37,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 81 transitions, 338 flow [2023-08-30 13:11:37,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 81 transitions, 337 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:11:37,460 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 105 flow [2023-08-30 13:11:37,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-08-30 13:11:37,461 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2023-08-30 13:11:37,461 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 105 flow [2023-08-30 13:11:37,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:11:37,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 13:11:37,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 13:11:37,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 13:11:37,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:11:37,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1213273, now seen corresponding path program 1 times [2023-08-30 13:11:37,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:11:37,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376275184] [2023-08-30 13:11:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:37,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:11:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:11:37,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:11:37,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376275184] [2023-08-30 13:11:37,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376275184] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:11:37,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926955983] [2023-08-30 13:11:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:37,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:11:37,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:11:37,541 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 13:11:37,548 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 13:11:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:37,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:11:37,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:11:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:11:37,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:11:37,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926955983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:11:37,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:11:37,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 13:11:37,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134484333] [2023-08-30 13:11:37,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:11:37,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:11:37,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:11:37,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:11:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:11:37,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 551 [2023-08-30 13:11:37,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:11:37,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 551 [2023-08-30 13:11:37,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:11:37,960 INFO L130 PetriNetUnfolder]: 293/585 cut-off events. [2023-08-30 13:11:37,960 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 13:11:37,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 585 events. 293/585 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2515 event pairs, 220 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 1177. Up to 292 conditions per place. [2023-08-30 13:11:37,963 INFO L137 encePairwiseOnDemand]: 548/551 looper letters, 77 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-30 13:11:37,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 80 transitions, 341 flow [2023-08-30 13:11:37,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:11:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:11:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1068 transitions. [2023-08-30 13:11:37,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484573502722323 [2023-08-30 13:11:37,967 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1068 transitions. [2023-08-30 13:11:37,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1068 transitions. [2023-08-30 13:11:37,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:11:37,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1068 transitions. [2023-08-30 13:11:37,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,976 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,976 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 105 flow. Second operand 4 states and 1068 transitions. [2023-08-30 13:11:37,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 80 transitions, 341 flow [2023-08-30 13:11:37,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 80 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:11:37,978 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 103 flow [2023-08-30 13:11:37,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-30 13:11:37,980 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-08-30 13:11:37,980 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 103 flow [2023-08-30 13:11:37,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:37,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:11:37,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 13:11:37,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 13:11:38,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:11:38,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 13:11:38,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:11:38,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1166078042, now seen corresponding path program 1 times [2023-08-30 13:11:38,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:11:38,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189633546] [2023-08-30 13:11:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:38,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:11:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:38,293 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 13:11:38,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:11:38,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189633546] [2023-08-30 13:11:38,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189633546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:11:38,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:11:38,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:11:38,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731935106] [2023-08-30 13:11:38,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:11:38,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:11:38,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:11:38,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:11:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:11:38,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 551 [2023-08-30 13:11:38,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:38,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:11:38,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 551 [2023-08-30 13:11:38,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:11:38,447 INFO L130 PetriNetUnfolder]: 147/294 cut-off events. [2023-08-30 13:11:38,448 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 13:11:38,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 294 events. 147/294 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 985 event pairs, 110 based on Foata normal form. 1/164 useless extension candidates. Maximal degree in co-relation 592. Up to 293 conditions per place. [2023-08-30 13:11:38,449 INFO L137 encePairwiseOnDemand]: 548/551 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 13:11:38,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 185 flow [2023-08-30 13:11:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:11:38,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:11:38,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 768 transitions. [2023-08-30 13:11:38,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646098003629764 [2023-08-30 13:11:38,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 768 transitions. [2023-08-30 13:11:38,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 768 transitions. [2023-08-30 13:11:38,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:11:38,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 768 transitions. [2023-08-30 13:11:38,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:38,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:38,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:38,458 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 103 flow. Second operand 3 states and 768 transitions. [2023-08-30 13:11:38,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 185 flow [2023-08-30 13:11:38,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 180 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 13:11:38,461 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 106 flow [2023-08-30 13:11:38,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-08-30 13:11:38,463 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2023-08-30 13:11:38,463 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 106 flow [2023-08-30 13:11:38,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:38,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:11:38,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:11:38,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 13:11:38,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 13:11:38,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:11:38,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1788391633, now seen corresponding path program 1 times [2023-08-30 13:11:38,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:11:38,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674028570] [2023-08-30 13:11:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:38,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:11:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 13:11:38,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:11:38,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674028570] [2023-08-30 13:11:38,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674028570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:11:38,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:11:38,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:11:38,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137099497] [2023-08-30 13:11:38,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:11:38,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:11:38,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:11:38,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:11:38,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:11:38,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 551 [2023-08-30 13:11:38,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:38,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:11:38,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 551 [2023-08-30 13:11:38,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:11:38,680 INFO L130 PetriNetUnfolder]: 91/211 cut-off events. [2023-08-30 13:11:38,681 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 13:11:38,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 211 events. 91/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 776 event pairs, 22 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 428. Up to 106 conditions per place. [2023-08-30 13:11:38,682 INFO L137 encePairwiseOnDemand]: 544/551 looper letters, 62 selfloop transitions, 3 changer transitions 1/67 dead transitions. [2023-08-30 13:11:38,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 288 flow [2023-08-30 13:11:38,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:11:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:11:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2023-08-30 13:11:38,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47973381730187536 [2023-08-30 13:11:38,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2023-08-30 13:11:38,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2023-08-30 13:11:38,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:11:38,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2023-08-30 13:11:38,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:38,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:38,691 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:38,691 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 106 flow. Second operand 3 states and 793 transitions. [2023-08-30 13:11:38,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 288 flow [2023-08-30 13:11:38,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 67 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:11:38,695 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 95 flow [2023-08-30 13:11:38,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2023-08-30 13:11:38,696 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-08-30 13:11:38,696 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 95 flow [2023-08-30 13:11:38,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:38,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:11:38,697 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 13:11:38,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 13:11:38,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 13:11:38,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:11:38,697 INFO L85 PathProgramCache]: Analyzing trace with hash 657601324, now seen corresponding path program 1 times [2023-08-30 13:11:38,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:11:38,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590580517] [2023-08-30 13:11:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:38,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:11:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 13:11:38,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:11:38,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590580517] [2023-08-30 13:11:38,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590580517] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:11:38,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205526005] [2023-08-30 13:11:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:38,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:11:38,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:11:38,787 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 13:11:38,818 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 13:11:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:38,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 13:11:38,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:11:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 13:11:38,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:11:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 13:11:38,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205526005] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:11:38,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:11:38,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 13:11:38,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761442489] [2023-08-30 13:11:38,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:11:38,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 13:11:38,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:11:38,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 13:11:38,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-08-30 13:11:39,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 551 [2023-08-30 13:11:39,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 95 flow. Second operand has 8 states, 8 states have (on average 241.5) internal successors, (1932), 8 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:39,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:11:39,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 551 [2023-08-30 13:11:39,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:11:39,152 INFO L130 PetriNetUnfolder]: 91/189 cut-off events. [2023-08-30 13:11:39,152 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 13:11:39,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 189 events. 91/189 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 517 event pairs, 66 based on Foata normal form. 1/150 useless extension candidates. Maximal degree in co-relation 430. Up to 187 conditions per place. [2023-08-30 13:11:39,154 INFO L137 encePairwiseOnDemand]: 548/551 looper letters, 34 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2023-08-30 13:11:39,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 173 flow [2023-08-30 13:11:39,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:11:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:11:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 998 transitions. [2023-08-30 13:11:39,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528130671506352 [2023-08-30 13:11:39,158 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 998 transitions. [2023-08-30 13:11:39,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 998 transitions. [2023-08-30 13:11:39,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:11:39,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 998 transitions. [2023-08-30 13:11:39,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:39,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:39,165 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:39,165 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 95 flow. Second operand 4 states and 998 transitions. [2023-08-30 13:11:39,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 173 flow [2023-08-30 13:11:39,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:11:39,167 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 108 flow [2023-08-30 13:11:39,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-30 13:11:39,170 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2023-08-30 13:11:39,171 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 108 flow [2023-08-30 13:11:39,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 241.5) internal successors, (1932), 8 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:39,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:11:39,172 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 13:11:39,186 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 13:11:39,377 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 13:11:39,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 13:11:39,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:11:39,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1372026027, now seen corresponding path program 2 times [2023-08-30 13:11:39,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:11:39,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760865626] [2023-08-30 13:11:39,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:39,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:11:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 13:11:39,411 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 13:11:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 13:11:39,444 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 13:11:39,445 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 13:11:39,446 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 13:11:39,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 13:11:39,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 13:11:39,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 13:11:39,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 13:11:39,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 13:11:39,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 13:11:39,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 13:11:39,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 13:11:39,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 13:11:39,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 13:11:39,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 13:11:39,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 13:11:39,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 13:11:39,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 13:11:39,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 13:11:39,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 13:11:39,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 13:11:39,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 13:11:39,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 13:11:39,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 13:11:39,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 13:11:39,451 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-08-30 13:11:39,453 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 13:11:39,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 13:11:39,514 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 13:11:39,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 443 transitions, 904 flow [2023-08-30 13:11:39,591 INFO L130 PetriNetUnfolder]: 36/505 cut-off events. [2023-08-30 13:11:39,591 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 13:11:39,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 505 events. 36/505 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1646 event pairs, 0 based on Foata normal form. 0/439 useless extension candidates. Maximal degree in co-relation 372. Up to 8 conditions per place. [2023-08-30 13:11:39,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 418 places, 443 transitions, 904 flow [2023-08-30 13:11:39,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 418 places, 443 transitions, 904 flow [2023-08-30 13:11:39,604 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:11:39,604 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 418 places, 443 transitions, 904 flow [2023-08-30 13:11:39,604 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 418 places, 443 transitions, 904 flow [2023-08-30 13:11:39,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 443 transitions, 904 flow [2023-08-30 13:11:39,685 INFO L130 PetriNetUnfolder]: 36/505 cut-off events. [2023-08-30 13:11:39,685 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 13:11:39,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 505 events. 36/505 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1646 event pairs, 0 based on Foata normal form. 0/439 useless extension candidates. Maximal degree in co-relation 372. Up to 8 conditions per place. [2023-08-30 13:11:39,719 INFO L119 LiptonReduction]: Number of co-enabled transitions 77356 [2023-08-30 13:11:50,323 INFO L134 LiptonReduction]: Checked pairs total: 84364 [2023-08-30 13:11:50,323 INFO L136 LiptonReduction]: Total number of compositions: 430 [2023-08-30 13:11:50,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:11:50,325 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;@51716d2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:11:50,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 13:11:50,327 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 13:11:50,327 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:11:50,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:11:50,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 13:11:50,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 13:11:50,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:11:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash 71570, now seen corresponding path program 1 times [2023-08-30 13:11:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:11:50,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967511344] [2023-08-30 13:11:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:11:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:50,375 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 13:11:50,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:11:50,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967511344] [2023-08-30 13:11:50,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967511344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:11:50,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:11:50,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:11:50,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454975044] [2023-08-30 13:11:50,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:11:50,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:11:50,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:11:50,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:11:50,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:11:50,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 873 [2023-08-30 13:11:50,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:50,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:11:50,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 873 [2023-08-30 13:11:50,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:11:52,293 INFO L130 PetriNetUnfolder]: 14527/21296 cut-off events. [2023-08-30 13:11:52,293 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2023-08-30 13:11:52,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42683 conditions, 21296 events. 14527/21296 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 129337 event pairs, 11718 based on Foata normal form. 0/13327 useless extension candidates. Maximal degree in co-relation 35395. Up to 21229 conditions per place. [2023-08-30 13:11:52,412 INFO L137 encePairwiseOnDemand]: 860/873 looper letters, 83 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-08-30 13:11:52,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 88 transitions, 362 flow [2023-08-30 13:11:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:11:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:11:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1284 transitions. [2023-08-30 13:11:52,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49026345933562426 [2023-08-30 13:11:52,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1284 transitions. [2023-08-30 13:11:52,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1284 transitions. [2023-08-30 13:11:52,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:11:52,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1284 transitions. [2023-08-30 13:11:52,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:52,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:52,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:52,427 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 218 flow. Second operand 3 states and 1284 transitions. [2023-08-30 13:11:52,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 88 transitions, 362 flow [2023-08-30 13:11:52,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 362 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 13:11:52,431 INFO L231 Difference]: Finished difference. Result has 80 places, 88 transitions, 196 flow [2023-08-30 13:11:52,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=80, PETRI_TRANSITIONS=88} [2023-08-30 13:11:52,433 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -4 predicate places. [2023-08-30 13:11:52,433 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 196 flow [2023-08-30 13:11:52,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:52,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:11:52,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 13:11:52,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 13:11:52,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 13:11:52,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:11:52,435 INFO L85 PathProgramCache]: Analyzing trace with hash 72426, now seen corresponding path program 1 times [2023-08-30 13:11:52,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:11:52,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447694892] [2023-08-30 13:11:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:52,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:11:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:52,498 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 13:11:52,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:11:52,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447694892] [2023-08-30 13:11:52,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447694892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:11:52,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:11:52,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:11:52,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586176523] [2023-08-30 13:11:52,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:11:52,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:11:52,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:11:52,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:11:52,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:11:52,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 873 [2023-08-30 13:11:52,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:52,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:11:52,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 873 [2023-08-30 13:11:52,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:11:55,845 INFO L130 PetriNetUnfolder]: 29053/42590 cut-off events. [2023-08-30 13:11:55,845 INFO L131 PetriNetUnfolder]: For 474/474 co-relation queries the response was YES. [2023-08-30 13:11:55,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85360 conditions, 42590 events. 29053/42590 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 1265. Compared 286787 event pairs, 23436 based on Foata normal form. 0/26653 useless extension candidates. Maximal degree in co-relation 85352. Up to 21230 conditions per place. [2023-08-30 13:11:56,085 INFO L137 encePairwiseOnDemand]: 870/873 looper letters, 164 selfloop transitions, 2 changer transitions 0/170 dead transitions. [2023-08-30 13:11:56,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 170 transitions, 706 flow [2023-08-30 13:11:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:11:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:11:56,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1355 transitions. [2023-08-30 13:11:56,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517373043146239 [2023-08-30 13:11:56,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1355 transitions. [2023-08-30 13:11:56,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1355 transitions. [2023-08-30 13:11:56,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:11:56,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1355 transitions. [2023-08-30 13:11:56,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 451.6666666666667) internal successors, (1355), 3 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:56,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:56,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:56,100 INFO L175 Difference]: Start difference. First operand has 80 places, 88 transitions, 196 flow. Second operand 3 states and 1355 transitions. [2023-08-30 13:11:56,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 170 transitions, 706 flow [2023-08-30 13:11:56,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 170 transitions, 705 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:11:56,108 INFO L231 Difference]: Finished difference. Result has 82 places, 89 transitions, 207 flow [2023-08-30 13:11:56,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=82, PETRI_TRANSITIONS=89} [2023-08-30 13:11:56,110 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2023-08-30 13:11:56,110 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 89 transitions, 207 flow [2023-08-30 13:11:56,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:56,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:11:56,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 13:11:56,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 13:11:56,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 13:11:56,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:11:56,112 INFO L85 PathProgramCache]: Analyzing trace with hash 72226, now seen corresponding path program 1 times [2023-08-30 13:11:56,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:11:56,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933573404] [2023-08-30 13:11:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:56,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:11:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:56,157 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 13:11:56,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:11:56,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933573404] [2023-08-30 13:11:56,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933573404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:11:56,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:11:56,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:11:56,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738964604] [2023-08-30 13:11:56,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:11:56,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:11:56,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:11:56,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:11:56,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:11:56,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 873 [2023-08-30 13:11:56,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 89 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:56,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:11:56,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 873 [2023-08-30 13:11:56,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:11:58,835 INFO L130 PetriNetUnfolder]: 29053/42588 cut-off events. [2023-08-30 13:11:58,835 INFO L131 PetriNetUnfolder]: For 474/474 co-relation queries the response was YES. [2023-08-30 13:11:58,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85362 conditions, 42588 events. 29053/42588 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 1265. Compared 286685 event pairs, 23436 based on Foata normal form. 0/26655 useless extension candidates. Maximal degree in co-relation 85352. Up to 42454 conditions per place. [2023-08-30 13:11:59,039 INFO L137 encePairwiseOnDemand]: 871/873 looper letters, 83 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-08-30 13:11:59,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 88 transitions, 373 flow [2023-08-30 13:11:59,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:11:59,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:11:59,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1272 transitions. [2023-08-30 13:11:59,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4856815578465063 [2023-08-30 13:11:59,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1272 transitions. [2023-08-30 13:11:59,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1272 transitions. [2023-08-30 13:11:59,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:11:59,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1272 transitions. [2023-08-30 13:11:59,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:59,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:59,052 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:59,052 INFO L175 Difference]: Start difference. First operand has 82 places, 89 transitions, 207 flow. Second operand 3 states and 1272 transitions. [2023-08-30 13:11:59,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 88 transitions, 373 flow [2023-08-30 13:11:59,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 88 transitions, 371 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:11:59,055 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 205 flow [2023-08-30 13:11:59,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2023-08-30 13:11:59,056 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2023-08-30 13:11:59,056 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 205 flow [2023-08-30 13:11:59,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:59,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:11:59,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 13:11:59,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 13:11:59,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 13:11:59,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:11:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2248905, now seen corresponding path program 1 times [2023-08-30 13:11:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:11:59,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842030540] [2023-08-30 13:11:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:59,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:11:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:11:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:11:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842030540] [2023-08-30 13:11:59,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842030540] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:11:59,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674056434] [2023-08-30 13:11:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:11:59,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:11:59,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:11:59,113 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 13:11:59,117 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 13:11:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:11:59,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:11:59,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:11:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:11:59,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:11:59,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674056434] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:11:59,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:11:59,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 13:11:59,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605914174] [2023-08-30 13:11:59,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:11:59,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:11:59,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:11:59,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:11:59,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:11:59,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 873 [2023-08-30 13:11:59,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 396.75) internal successors, (1587), 4 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:11:59,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:11:59,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 873 [2023-08-30 13:11:59,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:12:02,100 INFO L130 PetriNetUnfolder]: 29053/42587 cut-off events. [2023-08-30 13:12:02,100 INFO L131 PetriNetUnfolder]: For 474/474 co-relation queries the response was YES. [2023-08-30 13:12:02,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85359 conditions, 42587 events. 29053/42587 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 286780 event pairs, 23436 based on Foata normal form. 0/26655 useless extension candidates. Maximal degree in co-relation 85348. Up to 21227 conditions per place. [2023-08-30 13:12:02,272 INFO L137 encePairwiseOnDemand]: 870/873 looper letters, 161 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2023-08-30 13:12:02,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 167 transitions, 701 flow [2023-08-30 13:12:02,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:12:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:12:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1748 transitions. [2023-08-30 13:12:02,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005727376861397 [2023-08-30 13:12:02,284 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1748 transitions. [2023-08-30 13:12:02,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1748 transitions. [2023-08-30 13:12:02,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:12:02,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1748 transitions. [2023-08-30 13:12:02,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:02,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 873.0) internal successors, (4365), 5 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:02,310 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 873.0) internal successors, (4365), 5 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:02,310 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 205 flow. Second operand 4 states and 1748 transitions. [2023-08-30 13:12:02,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 167 transitions, 701 flow [2023-08-30 13:12:02,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 167 transitions, 700 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:12:02,314 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 204 flow [2023-08-30 13:12:02,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2023-08-30 13:12:02,315 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2023-08-30 13:12:02,316 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 204 flow [2023-08-30 13:12:02,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 396.75) internal successors, (1587), 4 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:02,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:12:02,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:12:02,325 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 13:12:02,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:12:02,524 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 13:12:02,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:12:02,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1725489997, now seen corresponding path program 1 times [2023-08-30 13:12:02,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:12:02,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822573765] [2023-08-30 13:12:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:12:02,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:12:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:12:02,572 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 13:12:02,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:12:02,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822573765] [2023-08-30 13:12:02,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822573765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:12:02,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:12:02,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:12:02,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334163960] [2023-08-30 13:12:02,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:12:02,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:12:02,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:12:02,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:12:02,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:12:02,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 873 [2023-08-30 13:12:02,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 391.6666666666667) internal successors, (1175), 3 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:02,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:12:02,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 873 [2023-08-30 13:12:02,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:12:04,928 INFO L130 PetriNetUnfolder]: 25169/37113 cut-off events. [2023-08-30 13:12:04,928 INFO L131 PetriNetUnfolder]: For 322/322 co-relation queries the response was YES. [2023-08-30 13:12:04,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74421 conditions, 37113 events. 25169/37113 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 257121 event pairs, 9396 based on Foata normal form. 0/24135 useless extension candidates. Maximal degree in co-relation 74409. Up to 25804 conditions per place. [2023-08-30 13:12:05,103 INFO L137 encePairwiseOnDemand]: 864/873 looper letters, 151 selfloop transitions, 4 changer transitions 1/159 dead transitions. [2023-08-30 13:12:05,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 159 transitions, 666 flow [2023-08-30 13:12:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:12:05,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:12:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1331 transitions. [2023-08-30 13:12:05,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082092401680031 [2023-08-30 13:12:05,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1331 transitions. [2023-08-30 13:12:05,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1331 transitions. [2023-08-30 13:12:05,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:12:05,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1331 transitions. [2023-08-30 13:12:05,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 443.6666666666667) internal successors, (1331), 3 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:05,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:05,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:05,116 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 204 flow. Second operand 3 states and 1331 transitions. [2023-08-30 13:12:05,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 159 transitions, 666 flow [2023-08-30 13:12:05,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 159 transitions, 663 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:12:05,122 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 227 flow [2023-08-30 13:12:05,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2023-08-30 13:12:05,123 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2023-08-30 13:12:05,123 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 227 flow [2023-08-30 13:12:05,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 391.6666666666667) internal successors, (1175), 3 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:05,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:12:05,123 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 13:12:05,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 13:12:05,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 13:12:05,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:12:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1250726627, now seen corresponding path program 1 times [2023-08-30 13:12:05,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:12:05,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627413964] [2023-08-30 13:12:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:12:05,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:12:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:12:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 13:12:05,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:12:05,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627413964] [2023-08-30 13:12:05,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627413964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:12:05,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:12:05,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:12:05,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835621461] [2023-08-30 13:12:05,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:12:05,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:12:05,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:12:05,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:12:05,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:12:05,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 873 [2023-08-30 13:12:05,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 390.6666666666667) internal successors, (1172), 3 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:05,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:12:05,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 873 [2023-08-30 13:12:05,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:12:07,059 INFO L130 PetriNetUnfolder]: 21471/31705 cut-off events. [2023-08-30 13:12:07,059 INFO L131 PetriNetUnfolder]: For 2218/2218 co-relation queries the response was YES. [2023-08-30 13:12:07,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68871 conditions, 31705 events. 21471/31705 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 202869 event pairs, 13988 based on Foata normal form. 0/23155 useless extension candidates. Maximal degree in co-relation 68859. Up to 25744 conditions per place. [2023-08-30 13:12:07,190 INFO L137 encePairwiseOnDemand]: 865/873 looper letters, 144 selfloop transitions, 7 changer transitions 0/154 dead transitions. [2023-08-30 13:12:07,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 154 transitions, 657 flow [2023-08-30 13:12:07,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:12:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:12:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1315 transitions. [2023-08-30 13:12:07,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021000381825124 [2023-08-30 13:12:07,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1315 transitions. [2023-08-30 13:12:07,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1315 transitions. [2023-08-30 13:12:07,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:12:07,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1315 transitions. [2023-08-30 13:12:07,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.3333333333333) internal successors, (1315), 3 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:07,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:07,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:07,202 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 227 flow. Second operand 3 states and 1315 transitions. [2023-08-30 13:12:07,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 154 transitions, 657 flow [2023-08-30 13:12:07,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 154 transitions, 653 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:12:07,408 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 244 flow [2023-08-30 13:12:07,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2023-08-30 13:12:07,408 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2023-08-30 13:12:07,409 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 244 flow [2023-08-30 13:12:07,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.6666666666667) internal successors, (1172), 3 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:07,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:12:07,409 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 13:12:07,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 13:12:07,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 13:12:07,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:12:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1250726387, now seen corresponding path program 1 times [2023-08-30 13:12:07,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:12:07,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813038737] [2023-08-30 13:12:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:12:07,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:12:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:12:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:12:07,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:12:07,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813038737] [2023-08-30 13:12:07,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813038737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:12:07,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146182247] [2023-08-30 13:12:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:12:07,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:12:07,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:12:07,483 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 13:12:07,485 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 13:12:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:12:07,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 13:12:07,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:12:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 13:12:07,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:12:07,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146182247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:12:07,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:12:07,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 13:12:07,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335781257] [2023-08-30 13:12:07,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:12:07,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:12:07,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:12:07,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:12:07,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:12:07,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 873 [2023-08-30 13:12:07,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 396.3333333333333) internal successors, (1189), 3 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:07,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:12:07,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 873 [2023-08-30 13:12:07,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:12:08,624 INFO L130 PetriNetUnfolder]: 10736/15854 cut-off events. [2023-08-30 13:12:08,624 INFO L131 PetriNetUnfolder]: For 10317/10317 co-relation queries the response was YES. [2023-08-30 13:12:08,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39405 conditions, 15854 events. 10736/15854 cut-off events. For 10317/10317 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 92454 event pairs, 8641 based on Foata normal form. 1/12364 useless extension candidates. Maximal degree in co-relation 39393. Up to 15813 conditions per place. [2023-08-30 13:12:08,699 INFO L137 encePairwiseOnDemand]: 870/873 looper letters, 82 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-30 13:12:08,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 412 flow [2023-08-30 13:12:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:12:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:12:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1264 transitions. [2023-08-30 13:12:08,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.482626956853761 [2023-08-30 13:12:08,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1264 transitions. [2023-08-30 13:12:08,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1264 transitions. [2023-08-30 13:12:08,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:12:08,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1264 transitions. [2023-08-30 13:12:08,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:08,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:08,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:08,710 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 244 flow. Second operand 3 states and 1264 transitions. [2023-08-30 13:12:08,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 412 flow [2023-08-30 13:12:08,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 403 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 13:12:08,716 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 243 flow [2023-08-30 13:12:08,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2023-08-30 13:12:08,717 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-08-30 13:12:08,717 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 243 flow [2023-08-30 13:12:08,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 396.3333333333333) internal successors, (1189), 3 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:08,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:12:08,717 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:12:08,728 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 13:12:08,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:12:08,928 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 13:12:08,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:12:08,929 INFO L85 PathProgramCache]: Analyzing trace with hash -330991406, now seen corresponding path program 1 times [2023-08-30 13:12:08,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:12:08,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764058750] [2023-08-30 13:12:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:12:08,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:12:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:12:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 13:12:09,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:12:09,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764058750] [2023-08-30 13:12:09,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764058750] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:12:09,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427563376] [2023-08-30 13:12:09,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:12:09,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:12:09,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:12:09,034 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 13:12:09,036 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 13:12:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:12:09,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 13:12:09,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:12:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 13:12:09,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:12:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 13:12:09,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427563376] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:12:09,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:12:09,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-30 13:12:09,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512112868] [2023-08-30 13:12:09,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:12:09,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 13:12:09,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:12:09,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 13:12:09,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 13:12:09,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 873 [2023-08-30 13:12:09,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 243 flow. Second operand has 8 states, 8 states have (on average 379.5) internal successors, (3036), 8 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:09,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:12:09,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 873 [2023-08-30 13:12:09,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:12:10,443 INFO L130 PetriNetUnfolder]: 8888/13292 cut-off events. [2023-08-30 13:12:10,444 INFO L131 PetriNetUnfolder]: For 7420/7420 co-relation queries the response was YES. [2023-08-30 13:12:10,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31797 conditions, 13292 events. 8888/13292 cut-off events. For 7420/7420 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 78168 event pairs, 3186 based on Foata normal form. 786/11148 useless extension candidates. Maximal degree in co-relation 31782. Up to 7633 conditions per place. [2023-08-30 13:12:10,499 INFO L137 encePairwiseOnDemand]: 865/873 looper letters, 143 selfloop transitions, 7 changer transitions 2/155 dead transitions. [2023-08-30 13:12:10,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 155 transitions, 685 flow [2023-08-30 13:12:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:12:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:12:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2417 transitions. [2023-08-30 13:12:10,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614356624665903 [2023-08-30 13:12:10,505 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2417 transitions. [2023-08-30 13:12:10,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2417 transitions. [2023-08-30 13:12:10,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:12:10,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2417 transitions. [2023-08-30 13:12:10,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 402.8333333333333) internal successors, (2417), 6 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:10,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 873.0) internal successors, (6111), 7 states have internal predecessors, (6111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:10,516 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 873.0) internal successors, (6111), 7 states have internal predecessors, (6111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:10,516 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 243 flow. Second operand 6 states and 2417 transitions. [2023-08-30 13:12:10,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 155 transitions, 685 flow [2023-08-30 13:12:10,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 155 transitions, 681 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:12:10,521 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 253 flow [2023-08-30 13:12:10,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=253, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2023-08-30 13:12:10,521 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 4 predicate places. [2023-08-30 13:12:10,521 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 253 flow [2023-08-30 13:12:10,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 379.5) internal successors, (3036), 8 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:10,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:12:10,522 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 13:12:10,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 13:12:10,727 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,SelfDestructingSolverStorable14 [2023-08-30 13:12:10,728 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 13:12:10,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:12:10,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1123349596, now seen corresponding path program 1 times [2023-08-30 13:12:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:12:10,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15660795] [2023-08-30 13:12:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:12:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:12:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 13:12:10,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 13:12:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 13:12:10,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 13:12:10,803 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 13:12:10,803 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-30 13:12:10,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-08-30 13:12:10,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-08-30 13:12:10,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-08-30 13:12:10,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-08-30 13:12:10,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-08-30 13:12:10,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-08-30 13:12:10,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-08-30 13:12:10,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-08-30 13:12:10,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-08-30 13:12:10,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-08-30 13:12:10,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-08-30 13:12:10,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-08-30 13:12:10,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-08-30 13:12:10,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-08-30 13:12:10,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-08-30 13:12:10,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-08-30 13:12:10,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-08-30 13:12:10,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-08-30 13:12:10,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-08-30 13:12:10,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-08-30 13:12:10,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-08-30 13:12:10,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-08-30 13:12:10,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-08-30 13:12:10,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-08-30 13:12:10,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 13:12:10,808 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:12:10,808 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 13:12:10,809 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 13:12:10,882 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 13:12:10,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 575 places, 611 transitions, 1252 flow [2023-08-30 13:12:11,054 INFO L130 PetriNetUnfolder]: 58/756 cut-off events. [2023-08-30 13:12:11,055 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 13:12:11,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 756 events. 58/756 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3286 event pairs, 1 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 574. Up to 16 conditions per place. [2023-08-30 13:12:11,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 575 places, 611 transitions, 1252 flow [2023-08-30 13:12:11,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 575 places, 611 transitions, 1252 flow [2023-08-30 13:12:11,083 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:12:11,083 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 575 places, 611 transitions, 1252 flow [2023-08-30 13:12:11,083 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 575 places, 611 transitions, 1252 flow [2023-08-30 13:12:11,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 575 places, 611 transitions, 1252 flow [2023-08-30 13:12:11,248 INFO L130 PetriNetUnfolder]: 58/756 cut-off events. [2023-08-30 13:12:11,249 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 13:12:11,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 756 events. 58/756 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3286 event pairs, 1 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 574. Up to 16 conditions per place. [2023-08-30 13:12:11,324 INFO L119 LiptonReduction]: Number of co-enabled transitions 200196 [2023-08-30 13:12:24,466 INFO L134 LiptonReduction]: Checked pairs total: 217744 [2023-08-30 13:12:24,466 INFO L136 LiptonReduction]: Total number of compositions: 595 [2023-08-30 13:12:24,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:12:24,468 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;@51716d2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:12:24,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-30 13:12:24,469 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 13:12:24,469 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:12:24,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:12:24,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 13:12:24,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 13:12:24,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:12:24,470 INFO L85 PathProgramCache]: Analyzing trace with hash 115205, now seen corresponding path program 1 times [2023-08-30 13:12:24,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:12:24,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656330014] [2023-08-30 13:12:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:12:24,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:12:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:12:24,502 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 13:12:24,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:12:24,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656330014] [2023-08-30 13:12:24,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656330014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:12:24,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:12:24,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:12:24,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716124736] [2023-08-30 13:12:24,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:12:24,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:12:24,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:12:24,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:12:24,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:12:24,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 545 out of 1206 [2023-08-30 13:12:24,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 137 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 545.6666666666666) internal successors, (1637), 3 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:12:24,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:12:24,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 545 of 1206 [2023-08-30 13:12:24,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:13:14,509 INFO L130 PetriNetUnfolder]: 596076/780703 cut-off events. [2023-08-30 13:13:14,509 INFO L131 PetriNetUnfolder]: For 11577/11577 co-relation queries the response was YES. [2023-08-30 13:13:15,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561329 conditions, 780703 events. 596076/780703 cut-off events. For 11577/11577 co-relation queries the response was YES. Maximal size of possible extension queue 14554. Compared 5403931 event pairs, 480976 based on Foata normal form. 0/500515 useless extension candidates. Maximal degree in co-relation 413539. Up to 774911 conditions per place. [2023-08-30 13:13:18,107 INFO L137 encePairwiseOnDemand]: 1189/1206 looper letters, 115 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2023-08-30 13:13:18,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 121 transitions, 504 flow [2023-08-30 13:13:18,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:13:18,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:13:18,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1767 transitions. [2023-08-30 13:13:18,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48839137645107794 [2023-08-30 13:13:18,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1767 transitions. [2023-08-30 13:13:18,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1767 transitions. [2023-08-30 13:13:18,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:13:18,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1767 transitions. [2023-08-30 13:13:18,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:13:18,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:13:18,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1206.0) internal successors, (4824), 4 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:13:18,120 INFO L175 Difference]: Start difference. First operand has 113 places, 137 transitions, 304 flow. Second operand 3 states and 1767 transitions. [2023-08-30 13:13:18,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 121 transitions, 504 flow [2023-08-30 13:13:18,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 121 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 13:13:18,126 INFO L231 Difference]: Finished difference. Result has 108 places, 121 transitions, 274 flow [2023-08-30 13:13:18,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1206, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=108, PETRI_TRANSITIONS=121} [2023-08-30 13:13:18,127 INFO L281 CegarLoopForPetriNet]: 113 programPoint places, -5 predicate places. [2023-08-30 13:13:18,127 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 121 transitions, 274 flow [2023-08-30 13:13:18,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 545.6666666666666) internal successors, (1637), 3 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:13:18,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:13:18,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 13:13:18,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 13:13:18,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 13:13:18,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:13:18,128 INFO L85 PathProgramCache]: Analyzing trace with hash 116379, now seen corresponding path program 1 times [2023-08-30 13:13:18,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:13:18,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733590435] [2023-08-30 13:13:18,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:13:18,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:13:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:13:18,385 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 13:13:18,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:13:18,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733590435] [2023-08-30 13:13:18,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733590435] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:13:18,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:13:18,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:13:18,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928394981] [2023-08-30 13:13:18,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:13:18,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:13:18,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:13:18,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:13:18,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:13:18,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 545 out of 1206 [2023-08-30 13:13:18,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 121 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 545.6666666666666) internal successors, (1637), 3 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:13:18,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:13:18,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 545 of 1206 [2023-08-30 13:13:18,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand