./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:14:36,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:14:36,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:14:36,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:14:36,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:14:36,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:14:36,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:14:36,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:14:36,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:14:36,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:14:36,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:14:36,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:14:36,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:14:36,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:14:36,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:14:36,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:14:36,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:14:36,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:14:36,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:14:36,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:14:36,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:14:36,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:14:36,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:14:36,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:14:36,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:14:36,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:14:36,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:14:36,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:14:36,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:14:36,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:14:36,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:14:36,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:14:36,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:14:36,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:14:36,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:14:36,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:14:36,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:14:36,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:14:36,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:14:36,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:14:36,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:14:36,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:14:36,200 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:14:36,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:14:36,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:14:36,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:14:36,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:14:36,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:14:36,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:14:36,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:14:36,204 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:14:36,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:14:36,205 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:14:36,205 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:14:36,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:14:36,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:14:36,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:14:36,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:14:36,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:14:36,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:14:36,206 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:14:36,206 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:14:36,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:14:36,207 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:14:36,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:14:36,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:14:36,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:14:36,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:14:36,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:14:36,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:14:36,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:14:36,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:14:36,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:14:36,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:14:36,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:14:36,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:14:36,209 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:14:36,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:14:36,210 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:14:36,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:14:36,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:14:36,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:14:36,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:14:36,544 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:14:36,544 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:14:36,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-30 14:14:37,789 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:14:38,029 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:14:38,030 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-30 14:14:38,043 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40544e3ec/abb1cadfc2dd4da7a64092579135a73e/FLAG87dcf4c4f [2023-08-30 14:14:38,056 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40544e3ec/abb1cadfc2dd4da7a64092579135a73e [2023-08-30 14:14:38,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:14:38,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:14:38,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:14:38,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:14:38,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:14:38,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2222a97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38, skipping insertion in model container [2023-08-30 14:14:38,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:14:38,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:14:38,449 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2023-08-30 14:14:38,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:14:38,482 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:14:38,521 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2023-08-30 14:14:38,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:14:38,575 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:14:38,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38 WrapperNode [2023-08-30 14:14:38,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:14:38,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:14:38,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:14:38,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:14:38,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,626 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2023-08-30 14:14:38,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:14:38,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:14:38,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:14:38,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:14:38,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,673 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:14:38,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:14:38,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:14:38,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:14:38,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38" (1/1) ... [2023-08-30 14:14:38,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:14:38,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:14:38,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 14:14:38,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 14:14:38,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:14:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:14:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:14:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:14:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:14:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:14:38,763 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:14:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:14:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:14:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:14:38,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:14:38,765 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:14:38,933 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:14:38,934 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:14:39,112 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:14:39,118 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:14:39,119 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 14:14:39,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:14:39 BoogieIcfgContainer [2023-08-30 14:14:39,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:14:39,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:14:39,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:14:39,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:14:39,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:14:38" (1/3) ... [2023-08-30 14:14:39,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1e5f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:14:39, skipping insertion in model container [2023-08-30 14:14:39,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:14:38" (2/3) ... [2023-08-30 14:14:39,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1e5f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:14:39, skipping insertion in model container [2023-08-30 14:14:39,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:14:39" (3/3) ... [2023-08-30 14:14:39,128 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-08-30 14:14:39,135 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:14:39,142 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:14:39,142 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:14:39,142 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:14:39,203 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:14:39,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 123 transitions, 254 flow [2023-08-30 14:14:39,284 INFO L130 PetriNetUnfolder]: 17/154 cut-off events. [2023-08-30 14:14:39,285 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:14:39,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 154 events. 17/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 371 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2023-08-30 14:14:39,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 123 transitions, 254 flow [2023-08-30 14:14:39,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 120 transitions, 248 flow [2023-08-30 14:14:39,298 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:14:39,306 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 120 transitions, 248 flow [2023-08-30 14:14:39,308 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 120 transitions, 248 flow [2023-08-30 14:14:39,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 120 transitions, 248 flow [2023-08-30 14:14:39,335 INFO L130 PetriNetUnfolder]: 16/151 cut-off events. [2023-08-30 14:14:39,335 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:14:39,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 151 events. 16/151 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 369 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2023-08-30 14:14:39,339 INFO L119 LiptonReduction]: Number of co-enabled transitions 3280 [2023-08-30 14:14:42,664 INFO L134 LiptonReduction]: Checked pairs total: 5962 [2023-08-30 14:14:42,664 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-30 14:14:42,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:14:42,681 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;@25fb4dba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:14:42,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 14:14:42,685 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-30 14:14:42,685 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:14:42,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:42,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:14:42,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:14:42,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:42,691 INFO L85 PathProgramCache]: Analyzing trace with hash 14591193, now seen corresponding path program 1 times [2023-08-30 14:14:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:42,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814883168] [2023-08-30 14:14:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:42,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:42,998 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 14:14:43,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:43,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814883168] [2023-08-30 14:14:43,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814883168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:43,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:43,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:14:43,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686339148] [2023-08-30 14:14:43,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:43,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:43,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:43,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:43,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:43,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 229 [2023-08-30 14:14:43,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 39 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:43,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:43,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 229 [2023-08-30 14:14:43,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:43,167 INFO L130 PetriNetUnfolder]: 112/255 cut-off events. [2023-08-30 14:14:43,167 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:14:43,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 255 events. 112/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 916 event pairs, 91 based on Foata normal form. 9/197 useless extension candidates. Maximal degree in co-relation 493. Up to 236 conditions per place. [2023-08-30 14:14:43,170 INFO L137 encePairwiseOnDemand]: 216/229 looper letters, 40 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 14:14:43,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 180 flow [2023-08-30 14:14:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-08-30 14:14:43,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443959243085881 [2023-08-30 14:14:43,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-08-30 14:14:43,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-08-30 14:14:43,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:43,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-08-30 14:14:43,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:43,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:43,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:43,208 INFO L175 Difference]: Start difference. First operand has 34 places, 39 transitions, 86 flow. Second operand 3 states and 374 transitions. [2023-08-30 14:14:43,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 180 flow [2023-08-30 14:14:43,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:14:43,213 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 74 flow [2023-08-30 14:14:43,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 14:14:43,218 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-08-30 14:14:43,218 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 74 flow [2023-08-30 14:14:43,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:43,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:43,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:14:43,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:14:43,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:14:43,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:43,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1137260311, now seen corresponding path program 1 times [2023-08-30 14:14:43,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:43,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851337852] [2023-08-30 14:14:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:43,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:14:43,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:14:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:14:43,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:14:43,310 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:14:43,312 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 14:14:43,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 14:14:43,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 14:14:43,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 14:14:43,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 14:14:43,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 14:14:43,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 14:14:43,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 14:14:43,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 14:14:43,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 14:14:43,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 14:14:43,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 14:14:43,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 14:14:43,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:14:43,322 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:14:43,325 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:14:43,325 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:14:43,360 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:14:43,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2023-08-30 14:14:43,413 INFO L130 PetriNetUnfolder]: 31/263 cut-off events. [2023-08-30 14:14:43,413 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:14:43,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 263 events. 31/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 798 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-08-30 14:14:43,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 165 transitions, 348 flow [2023-08-30 14:14:43,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 165 transitions, 348 flow [2023-08-30 14:14:43,421 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:14:43,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 165 transitions, 348 flow [2023-08-30 14:14:43,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 165 transitions, 348 flow [2023-08-30 14:14:43,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2023-08-30 14:14:43,453 INFO L130 PetriNetUnfolder]: 31/263 cut-off events. [2023-08-30 14:14:43,453 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:14:43,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 263 events. 31/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 798 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-08-30 14:14:43,461 INFO L119 LiptonReduction]: Number of co-enabled transitions 11280 [2023-08-30 14:14:46,529 INFO L134 LiptonReduction]: Checked pairs total: 23302 [2023-08-30 14:14:46,529 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-08-30 14:14:46,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:14:46,532 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;@25fb4dba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:14:46,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:14:46,534 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 14:14:46,535 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:14:46,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:46,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:14:46,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:46,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:46,536 INFO L85 PathProgramCache]: Analyzing trace with hash 777411918, now seen corresponding path program 1 times [2023-08-30 14:14:46,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:46,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295809889] [2023-08-30 14:14:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:46,573 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 14:14:46,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:46,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295809889] [2023-08-30 14:14:46,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295809889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:46,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:46,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:14:46,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49555028] [2023-08-30 14:14:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:46,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:46,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:46,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:46,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:46,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 299 [2023-08-30 14:14:46,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:46,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:46,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 299 [2023-08-30 14:14:46,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:47,181 INFO L130 PetriNetUnfolder]: 4058/6786 cut-off events. [2023-08-30 14:14:47,181 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 14:14:47,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13366 conditions, 6786 events. 4058/6786 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 44810 event pairs, 1898 based on Foata normal form. 652/5234 useless extension candidates. Maximal degree in co-relation 1538. Up to 6459 conditions per place. [2023-08-30 14:14:47,234 INFO L137 encePairwiseOnDemand]: 280/299 looper letters, 57 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-30 14:14:47,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 66 transitions, 268 flow [2023-08-30 14:14:47,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-30 14:14:47,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562987736900781 [2023-08-30 14:14:47,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-30 14:14:47,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-30 14:14:47,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:47,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-30 14:14:47,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:47,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:47,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:47,244 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 148 flow. Second operand 3 states and 499 transitions. [2023-08-30 14:14:47,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 66 transitions, 268 flow [2023-08-30 14:14:47,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 268 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:14:47,247 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 136 flow [2023-08-30 14:14:47,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-30 14:14:47,248 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-30 14:14:47,250 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 136 flow [2023-08-30 14:14:47,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:47,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:47,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:47,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:14:47,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:47,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash -225457439, now seen corresponding path program 1 times [2023-08-30 14:14:47,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:47,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573108007] [2023-08-30 14:14:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:47,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:47,400 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 14:14:47,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:47,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573108007] [2023-08-30 14:14:47,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573108007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:47,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:47,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:14:47,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040893698] [2023-08-30 14:14:47,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:47,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:14:47,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:47,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:14:47,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:14:47,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 299 [2023-08-30 14:14:47,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:47,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:47,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 299 [2023-08-30 14:14:47,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:47,991 INFO L130 PetriNetUnfolder]: 3632/6075 cut-off events. [2023-08-30 14:14:47,992 INFO L131 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2023-08-30 14:14:47,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12724 conditions, 6075 events. 3632/6075 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 39146 event pairs, 1381 based on Foata normal form. 0/4423 useless extension candidates. Maximal degree in co-relation 12636. Up to 5339 conditions per place. [2023-08-30 14:14:48,026 INFO L137 encePairwiseOnDemand]: 291/299 looper letters, 67 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-08-30 14:14:48,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 354 flow [2023-08-30 14:14:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:14:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:14:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 611 transitions. [2023-08-30 14:14:48,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2023-08-30 14:14:48,028 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 611 transitions. [2023-08-30 14:14:48,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 611 transitions. [2023-08-30 14:14:48,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:48,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 611 transitions. [2023-08-30 14:14:48,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:48,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:48,033 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:48,033 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 136 flow. Second operand 4 states and 611 transitions. [2023-08-30 14:14:48,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 354 flow [2023-08-30 14:14:48,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:14:48,037 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 185 flow [2023-08-30 14:14:48,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-30 14:14:48,038 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2023-08-30 14:14:48,038 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 185 flow [2023-08-30 14:14:48,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:48,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:48,039 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:14:48,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:14:48,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:48,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash 960314699, now seen corresponding path program 1 times [2023-08-30 14:14:48,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:48,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329596314] [2023-08-30 14:14:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:48,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:14:48,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:48,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329596314] [2023-08-30 14:14:48,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329596314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:48,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:48,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:14:48,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220328755] [2023-08-30 14:14:48,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:48,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:48,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:48,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:48,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:48,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 299 [2023-08-30 14:14:48,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:48,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:48,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 299 [2023-08-30 14:14:48,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:48,551 INFO L130 PetriNetUnfolder]: 3308/5538 cut-off events. [2023-08-30 14:14:48,551 INFO L131 PetriNetUnfolder]: For 1222/1222 co-relation queries the response was YES. [2023-08-30 14:14:48,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12769 conditions, 5538 events. 3308/5538 cut-off events. For 1222/1222 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 34731 event pairs, 3160 based on Foata normal form. 0/4521 useless extension candidates. Maximal degree in co-relation 10362. Up to 5328 conditions per place. [2023-08-30 14:14:48,589 INFO L137 encePairwiseOnDemand]: 297/299 looper letters, 48 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 14:14:48,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 279 flow [2023-08-30 14:14:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-30 14:14:48,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5139353400222966 [2023-08-30 14:14:48,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-30 14:14:48,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-30 14:14:48,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:48,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-30 14:14:48,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:48,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:48,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:48,596 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 185 flow. Second operand 3 states and 461 transitions. [2023-08-30 14:14:48,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 279 flow [2023-08-30 14:14:48,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 279 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:14:48,603 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 183 flow [2023-08-30 14:14:48,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-30 14:14:48,605 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-08-30 14:14:48,605 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 183 flow [2023-08-30 14:14:48,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:48,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:48,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:14:48,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:14:48,606 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:48,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:48,607 INFO L85 PathProgramCache]: Analyzing trace with hash 960314729, now seen corresponding path program 1 times [2023-08-30 14:14:48,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:48,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140185347] [2023-08-30 14:14:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:48,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:48,667 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 14:14:48,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:48,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140185347] [2023-08-30 14:14:48,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140185347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:48,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:48,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:14:48,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80345401] [2023-08-30 14:14:48,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:48,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:48,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:48,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:48,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 299 [2023-08-30 14:14:48,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:48,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:48,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 299 [2023-08-30 14:14:48,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:49,124 INFO L130 PetriNetUnfolder]: 2984/4914 cut-off events. [2023-08-30 14:14:49,125 INFO L131 PetriNetUnfolder]: For 919/919 co-relation queries the response was YES. [2023-08-30 14:14:49,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11377 conditions, 4914 events. 2984/4914 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 31300 event pairs, 493 based on Foata normal form. 0/4157 useless extension candidates. Maximal degree in co-relation 11363. Up to 3956 conditions per place. [2023-08-30 14:14:49,145 INFO L137 encePairwiseOnDemand]: 295/299 looper letters, 73 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-08-30 14:14:49,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 84 transitions, 417 flow [2023-08-30 14:14:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:49,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-08-30 14:14:49,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5395763656633222 [2023-08-30 14:14:49,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-08-30 14:14:49,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-08-30 14:14:49,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:49,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-08-30 14:14:49,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:49,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:49,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:49,151 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 183 flow. Second operand 3 states and 484 transitions. [2023-08-30 14:14:49,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 84 transitions, 417 flow [2023-08-30 14:14:49,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:14:49,157 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 194 flow [2023-08-30 14:14:49,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-08-30 14:14:49,158 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-08-30 14:14:49,158 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 194 flow [2023-08-30 14:14:49,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:49,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:49,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:49,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:14:49,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:49,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:49,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1024933762, now seen corresponding path program 1 times [2023-08-30 14:14:49,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:49,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966718073] [2023-08-30 14:14:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:49,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:49,226 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 14:14:49,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:49,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966718073] [2023-08-30 14:14:49,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966718073] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:49,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:49,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:14:49,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651678335] [2023-08-30 14:14:49,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:49,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:49,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:49,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:49,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:49,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 299 [2023-08-30 14:14:49,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:49,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:49,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 299 [2023-08-30 14:14:49,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:49,909 INFO L130 PetriNetUnfolder]: 3746/6535 cut-off events. [2023-08-30 14:14:49,909 INFO L131 PetriNetUnfolder]: For 2918/2918 co-relation queries the response was YES. [2023-08-30 14:14:49,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15706 conditions, 6535 events. 3746/6535 cut-off events. For 2918/2918 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 43353 event pairs, 1516 based on Foata normal form. 0/5752 useless extension candidates. Maximal degree in co-relation 15690. Up to 3496 conditions per place. [2023-08-30 14:14:49,942 INFO L137 encePairwiseOnDemand]: 287/299 looper letters, 73 selfloop transitions, 15 changer transitions 0/95 dead transitions. [2023-08-30 14:14:49,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 95 transitions, 496 flow [2023-08-30 14:14:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-30 14:14:49,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462653288740246 [2023-08-30 14:14:49,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-30 14:14:49,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-30 14:14:49,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:49,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-30 14:14:49,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:49,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:49,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:49,948 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 194 flow. Second operand 3 states and 490 transitions. [2023-08-30 14:14:49,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 95 transitions, 496 flow [2023-08-30 14:14:49,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 95 transitions, 489 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:14:49,956 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 304 flow [2023-08-30 14:14:49,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2023-08-30 14:14:49,957 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2023-08-30 14:14:49,957 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 304 flow [2023-08-30 14:14:49,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:49,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:49,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:49,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:14:49,958 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:49,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1024933729, now seen corresponding path program 1 times [2023-08-30 14:14:49,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:49,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571514683] [2023-08-30 14:14:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:49,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:50,081 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 14:14:50,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571514683] [2023-08-30 14:14:50,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571514683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:50,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:50,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:14:50,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115773703] [2023-08-30 14:14:50,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:50,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:14:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:50,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:14:50,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:14:50,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 299 [2023-08-30 14:14:50,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 130.5) internal successors, (783), 6 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:50,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:50,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 299 [2023-08-30 14:14:50,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:51,039 INFO L130 PetriNetUnfolder]: 4198/7508 cut-off events. [2023-08-30 14:14:51,040 INFO L131 PetriNetUnfolder]: For 6481/6481 co-relation queries the response was YES. [2023-08-30 14:14:51,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20110 conditions, 7508 events. 4198/7508 cut-off events. For 6481/6481 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 52828 event pairs, 1072 based on Foata normal form. 206/7604 useless extension candidates. Maximal degree in co-relation 20091. Up to 4776 conditions per place. [2023-08-30 14:14:51,080 INFO L137 encePairwiseOnDemand]: 282/299 looper letters, 163 selfloop transitions, 34 changer transitions 0/204 dead transitions. [2023-08-30 14:14:51,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 204 transitions, 1221 flow [2023-08-30 14:14:51,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 14:14:51,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 14:14:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1340 transitions. [2023-08-30 14:14:51,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49795615013006317 [2023-08-30 14:14:51,084 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1340 transitions. [2023-08-30 14:14:51,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1340 transitions. [2023-08-30 14:14:51,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:51,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1340 transitions. [2023-08-30 14:14:51,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 148.88888888888889) internal successors, (1340), 9 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:51,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 299.0) internal successors, (2990), 10 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:51,091 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 299.0) internal successors, (2990), 10 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:51,091 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 304 flow. Second operand 9 states and 1340 transitions. [2023-08-30 14:14:51,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 204 transitions, 1221 flow [2023-08-30 14:14:51,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 204 transitions, 1159 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:14:51,106 INFO L231 Difference]: Finished difference. Result has 78 places, 93 transitions, 604 flow [2023-08-30 14:14:51,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=604, PETRI_PLACES=78, PETRI_TRANSITIONS=93} [2023-08-30 14:14:51,106 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2023-08-30 14:14:51,107 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 93 transitions, 604 flow [2023-08-30 14:14:51,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.5) internal successors, (783), 6 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:51,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:51,107 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:14:51,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:14:51,108 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:14:51,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:51,108 INFO L85 PathProgramCache]: Analyzing trace with hash -555489305, now seen corresponding path program 1 times [2023-08-30 14:14:51,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:51,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215683756] [2023-08-30 14:14:51,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:51,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:14:51,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:14:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:14:51,130 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:14:51,130 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:14:51,131 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:14:51,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:14:51,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:14:51,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:14:51,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:14:51,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:14:51,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:14:51,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:14:51,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:14:51,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:14:51,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:14:51,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:14:51,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:14:51,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:14:51,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:14:51,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:14:51,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:14:51,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:14:51,134 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:51,135 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:14:51,135 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:14:51,153 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:14:51,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 207 transitions, 444 flow [2023-08-30 14:14:51,192 INFO L130 PetriNetUnfolder]: 50/411 cut-off events. [2023-08-30 14:14:51,192 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:14:51,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 411 events. 50/411 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1414 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-30 14:14:51,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 207 transitions, 444 flow [2023-08-30 14:14:51,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 207 transitions, 444 flow [2023-08-30 14:14:51,199 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:14:51,199 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 207 transitions, 444 flow [2023-08-30 14:14:51,199 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 207 transitions, 444 flow [2023-08-30 14:14:51,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 207 transitions, 444 flow [2023-08-30 14:14:51,233 INFO L130 PetriNetUnfolder]: 50/411 cut-off events. [2023-08-30 14:14:51,233 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:14:51,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 411 events. 50/411 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1414 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-30 14:14:51,253 INFO L119 LiptonReduction]: Number of co-enabled transitions 22080 [2023-08-30 14:14:54,611 INFO L134 LiptonReduction]: Checked pairs total: 50130 [2023-08-30 14:14:54,611 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-08-30 14:14:54,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:14:54,613 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;@25fb4dba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:14:54,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:14:54,615 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 14:14:54,615 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:14:54,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:54,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:14:54,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:14:54,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:54,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1177375725, now seen corresponding path program 1 times [2023-08-30 14:14:54,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:54,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320136523] [2023-08-30 14:14:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:54,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:54,660 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 14:14:54,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:54,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320136523] [2023-08-30 14:14:54,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320136523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:54,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:54,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:14:54,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952936608] [2023-08-30 14:14:54,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:54,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:54,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:54,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:54,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:54,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 377 [2023-08-30 14:14:54,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 88 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:54,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:54,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 377 [2023-08-30 14:14:54,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:02,316 INFO L130 PetriNetUnfolder]: 97896/138669 cut-off events. [2023-08-30 14:15:02,316 INFO L131 PetriNetUnfolder]: For 2669/2669 co-relation queries the response was YES. [2023-08-30 14:15:02,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276351 conditions, 138669 events. 97896/138669 cut-off events. For 2669/2669 co-relation queries the response was YES. Maximal size of possible extension queue 3606. Compared 1012034 event pairs, 63646 based on Foata normal form. 10164/106425 useless extension candidates. Maximal degree in co-relation 24451. Up to 135947 conditions per place. [2023-08-30 14:15:03,132 INFO L137 encePairwiseOnDemand]: 352/377 looper letters, 73 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-30 14:15:03,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 346 flow [2023-08-30 14:15:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2023-08-30 14:15:03,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508399646330681 [2023-08-30 14:15:03,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2023-08-30 14:15:03,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2023-08-30 14:15:03,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:03,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2023-08-30 14:15:03,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:03,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:03,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:03,140 INFO L175 Difference]: Start difference. First operand has 72 places, 88 transitions, 206 flow. Second operand 3 states and 623 transitions. [2023-08-30 14:15:03,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 346 flow [2023-08-30 14:15:03,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:15:03,144 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 182 flow [2023-08-30 14:15:03,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2023-08-30 14:15:03,147 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2023-08-30 14:15:03,148 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 182 flow [2023-08-30 14:15:03,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:03,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:03,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:15:03,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:15:03,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:03,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:03,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1888766032, now seen corresponding path program 1 times [2023-08-30 14:15:03,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:03,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405673584] [2023-08-30 14:15:03,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:03,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:03,264 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 14:15:03,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:03,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405673584] [2023-08-30 14:15:03,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405673584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:03,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:03,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:15:03,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897828966] [2023-08-30 14:15:03,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:03,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:15:03,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:03,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:15:03,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:15:03,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 377 [2023-08-30 14:15:03,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:03,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:03,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 377 [2023-08-30 14:15:03,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:10,378 INFO L130 PetriNetUnfolder]: 93406/131115 cut-off events. [2023-08-30 14:15:10,378 INFO L131 PetriNetUnfolder]: For 8636/8636 co-relation queries the response was YES. [2023-08-30 14:15:10,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274598 conditions, 131115 events. 93406/131115 cut-off events. For 8636/8636 co-relation queries the response was YES. Maximal size of possible extension queue 3590. Compared 931022 event pairs, 45329 based on Foata normal form. 176/94681 useless extension candidates. Maximal degree in co-relation 274509. Up to 127779 conditions per place. [2023-08-30 14:15:11,157 INFO L137 encePairwiseOnDemand]: 366/377 looper letters, 88 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2023-08-30 14:15:11,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 104 transitions, 467 flow [2023-08-30 14:15:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:15:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:15:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 766 transitions. [2023-08-30 14:15:11,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079575596816976 [2023-08-30 14:15:11,161 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 766 transitions. [2023-08-30 14:15:11,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 766 transitions. [2023-08-30 14:15:11,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:11,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 766 transitions. [2023-08-30 14:15:11,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.5) internal successors, (766), 4 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:11,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:11,166 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:11,166 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 182 flow. Second operand 4 states and 766 transitions. [2023-08-30 14:15:11,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 104 transitions, 467 flow [2023-08-30 14:15:11,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 104 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:15:11,181 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 251 flow [2023-08-30 14:15:11,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2023-08-30 14:15:11,182 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2023-08-30 14:15:11,182 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 251 flow [2023-08-30 14:15:11,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:11,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:11,183 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:15:11,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:15:11,183 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:11,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:11,183 INFO L85 PathProgramCache]: Analyzing trace with hash 177401746, now seen corresponding path program 1 times [2023-08-30 14:15:11,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:11,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792584291] [2023-08-30 14:15:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:11,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:11,216 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 14:15:11,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:11,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792584291] [2023-08-30 14:15:11,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792584291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:11,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:11,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:15:11,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840852194] [2023-08-30 14:15:11,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:11,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:11,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:11,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:11,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:11,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 377 [2023-08-30 14:15:11,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:11,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:11,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 377 [2023-08-30 14:15:11,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:17,956 INFO L130 PetriNetUnfolder]: 85247/119710 cut-off events. [2023-08-30 14:15:17,956 INFO L131 PetriNetUnfolder]: For 27128/27152 co-relation queries the response was YES. [2023-08-30 14:15:18,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282873 conditions, 119710 events. 85247/119710 cut-off events. For 27128/27152 co-relation queries the response was YES. Maximal size of possible extension queue 3173. Compared 873871 event pairs, 21963 based on Foata normal form. 0/95694 useless extension candidates. Maximal degree in co-relation 172487. Up to 88040 conditions per place. [2023-08-30 14:15:18,813 INFO L137 encePairwiseOnDemand]: 373/377 looper letters, 107 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2023-08-30 14:15:18,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 119 transitions, 596 flow [2023-08-30 14:15:18,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 617 transitions. [2023-08-30 14:15:18,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5455349248452697 [2023-08-30 14:15:18,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 617 transitions. [2023-08-30 14:15:18,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 617 transitions. [2023-08-30 14:15:18,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:18,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 617 transitions. [2023-08-30 14:15:18,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:18,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:18,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:18,828 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 251 flow. Second operand 3 states and 617 transitions. [2023-08-30 14:15:18,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 119 transitions, 596 flow [2023-08-30 14:15:18,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:15:18,904 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 263 flow [2023-08-30 14:15:18,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-08-30 14:15:18,906 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 9 predicate places. [2023-08-30 14:15:18,906 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 263 flow [2023-08-30 14:15:18,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:18,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:18,906 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:15:18,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:15:18,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:18,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash 177401709, now seen corresponding path program 1 times [2023-08-30 14:15:18,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:18,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15899386] [2023-08-30 14:15:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:18,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:18,945 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 14:15:18,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:18,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15899386] [2023-08-30 14:15:18,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15899386] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:15:18,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671842879] [2023-08-30 14:15:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:18,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:15:18,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:15:18,953 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 14:15:18,980 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 14:15:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:19,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:15:19,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:15:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:15:19,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:15:19,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671842879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:19,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:15:19,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:15:19,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785313442] [2023-08-30 14:15:19,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:19,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:15:19,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:19,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:15:19,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:15:19,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 377 [2023-08-30 14:15:19,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:19,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:19,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 377 [2023-08-30 14:15:19,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:25,553 INFO L130 PetriNetUnfolder]: 77088/109201 cut-off events. [2023-08-30 14:15:25,553 INFO L131 PetriNetUnfolder]: For 50316/50380 co-relation queries the response was YES. [2023-08-30 14:15:25,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264489 conditions, 109201 events. 77088/109201 cut-off events. For 50316/50380 co-relation queries the response was YES. Maximal size of possible extension queue 2795. Compared 766049 event pairs, 52040 based on Foata normal form. 2998/93003 useless extension candidates. Maximal degree in co-relation 161746. Up to 107580 conditions per place. [2023-08-30 14:15:26,388 INFO L137 encePairwiseOnDemand]: 374/377 looper letters, 76 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 14:15:26,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 86 transitions, 440 flow [2023-08-30 14:15:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:15:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:15:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 764 transitions. [2023-08-30 14:15:26,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506631299734748 [2023-08-30 14:15:26,391 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 764 transitions. [2023-08-30 14:15:26,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 764 transitions. [2023-08-30 14:15:26,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:26,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 764 transitions. [2023-08-30 14:15:26,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:26,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:26,395 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:26,395 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 263 flow. Second operand 4 states and 764 transitions. [2023-08-30 14:15:26,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 86 transitions, 440 flow [2023-08-30 14:15:26,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:15:26,450 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 259 flow [2023-08-30 14:15:26,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=259, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2023-08-30 14:15:26,451 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2023-08-30 14:15:26,451 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 259 flow [2023-08-30 14:15:26,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:26,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:26,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:15:26,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:15:26,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 14:15:26,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:26,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:26,657 INFO L85 PathProgramCache]: Analyzing trace with hash 9780848, now seen corresponding path program 1 times [2023-08-30 14:15:26,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:26,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121033816] [2023-08-30 14:15:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:26,716 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 14:15:26,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121033816] [2023-08-30 14:15:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121033816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:26,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:26,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:15:26,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255239132] [2023-08-30 14:15:26,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:26,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:26,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:26,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:26,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:26,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 377 [2023-08-30 14:15:26,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:26,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:26,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 377 [2023-08-30 14:15:26,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:35,883 INFO L130 PetriNetUnfolder]: 105580/154126 cut-off events. [2023-08-30 14:15:35,883 INFO L131 PetriNetUnfolder]: For 57200/57344 co-relation queries the response was YES. [2023-08-30 14:15:36,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370109 conditions, 154126 events. 105580/154126 cut-off events. For 57200/57344 co-relation queries the response was YES. Maximal size of possible extension queue 3752. Compared 1194436 event pairs, 41030 based on Foata normal form. 112/132096 useless extension candidates. Maximal degree in co-relation 370005. Up to 90101 conditions per place. [2023-08-30 14:15:36,710 INFO L137 encePairwiseOnDemand]: 360/377 looper letters, 100 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2023-08-30 14:15:36,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 129 transitions, 676 flow [2023-08-30 14:15:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:36,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2023-08-30 14:15:36,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464190981432361 [2023-08-30 14:15:36,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2023-08-30 14:15:36,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2023-08-30 14:15:36,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:36,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2023-08-30 14:15:36,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:36,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:36,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:36,715 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 259 flow. Second operand 3 states and 618 transitions. [2023-08-30 14:15:36,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 129 transitions, 676 flow [2023-08-30 14:15:36,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 129 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:15:36,833 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 418 flow [2023-08-30 14:15:36,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2023-08-30 14:15:36,834 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2023-08-30 14:15:36,834 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 418 flow [2023-08-30 14:15:36,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:36,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:36,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:15:36,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:15:36,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:36,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:36,835 INFO L85 PathProgramCache]: Analyzing trace with hash 9780837, now seen corresponding path program 1 times [2023-08-30 14:15:36,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:36,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078983904] [2023-08-30 14:15:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:36,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:36,985 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 14:15:36,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078983904] [2023-08-30 14:15:36,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078983904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:36,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:36,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:15:36,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834985566] [2023-08-30 14:15:36,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:36,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:15:36,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:36,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:15:36,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:15:37,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 377 [2023-08-30 14:15:37,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:37,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:37,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 377 [2023-08-30 14:15:37,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:50,304 INFO L130 PetriNetUnfolder]: 135466/201773 cut-off events. [2023-08-30 14:15:50,304 INFO L131 PetriNetUnfolder]: For 202756/202905 co-relation queries the response was YES. [2023-08-30 14:15:50,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551397 conditions, 201773 events. 135466/201773 cut-off events. For 202756/202905 co-relation queries the response was YES. Maximal size of possible extension queue 5199. Compared 1666444 event pairs, 35761 based on Foata normal form. 5962/204868 useless extension candidates. Maximal degree in co-relation 551292. Up to 134849 conditions per place. [2023-08-30 14:15:51,794 INFO L137 encePairwiseOnDemand]: 354/377 looper letters, 237 selfloop transitions, 53 changer transitions 0/298 dead transitions. [2023-08-30 14:15:51,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 298 transitions, 1839 flow [2023-08-30 14:15:51,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 14:15:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 14:15:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1707 transitions. [2023-08-30 14:15:51,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030946065428824 [2023-08-30 14:15:51,798 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1707 transitions. [2023-08-30 14:15:51,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1707 transitions. [2023-08-30 14:15:51,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:51,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1707 transitions. [2023-08-30 14:15:51,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:51,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 377.0) internal successors, (3770), 10 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:51,808 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 377.0) internal successors, (3770), 10 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:51,808 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 418 flow. Second operand 9 states and 1707 transitions. [2023-08-30 14:15:51,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 298 transitions, 1839 flow [2023-08-30 14:15:52,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 298 transitions, 1743 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:15:52,223 INFO L231 Difference]: Finished difference. Result has 96 places, 133 transitions, 926 flow [2023-08-30 14:15:52,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=926, PETRI_PLACES=96, PETRI_TRANSITIONS=133} [2023-08-30 14:15:52,224 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 24 predicate places. [2023-08-30 14:15:52,224 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 133 transitions, 926 flow [2023-08-30 14:15:52,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:52,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:52,225 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:15:52,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:15:52,225 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:52,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:52,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1848878365, now seen corresponding path program 1 times [2023-08-30 14:15:52,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:52,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568019625] [2023-08-30 14:15:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:52,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:52,416 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 14:15:52,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:52,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568019625] [2023-08-30 14:15:52,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568019625] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:15:52,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932097073] [2023-08-30 14:15:52,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:52,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:15:52,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:15:52,418 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 14:15:52,421 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 14:15:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:52,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 14:15:52,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:15:52,537 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:15:52,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:15:52,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:15:52,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:15:52,629 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 14:15:52,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:15:52,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932097073] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:52,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:15:52,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2023-08-30 14:15:52,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447699144] [2023-08-30 14:15:52,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:52,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:15:52,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:52,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:15:52,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 14:15:52,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 377 [2023-08-30 14:15:52,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 133 transitions, 926 flow. Second operand has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:52,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:52,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 377 [2023-08-30 14:15:52,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:07,777 INFO L130 PetriNetUnfolder]: 132395/197338 cut-off events. [2023-08-30 14:16:07,777 INFO L131 PetriNetUnfolder]: For 395142/395543 co-relation queries the response was YES. [2023-08-30 14:16:08,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642178 conditions, 197338 events. 132395/197338 cut-off events. For 395142/395543 co-relation queries the response was YES. Maximal size of possible extension queue 5090. Compared 1633164 event pairs, 61311 based on Foata normal form. 2034/196484 useless extension candidates. Maximal degree in co-relation 642063. Up to 120444 conditions per place. [2023-08-30 14:16:09,200 INFO L137 encePairwiseOnDemand]: 360/377 looper letters, 303 selfloop transitions, 40 changer transitions 0/351 dead transitions. [2023-08-30 14:16:09,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 351 transitions, 3058 flow [2023-08-30 14:16:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:16:09,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:16:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1018 transitions. [2023-08-30 14:16:09,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540053050397878 [2023-08-30 14:16:09,204 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1018 transitions. [2023-08-30 14:16:09,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1018 transitions. [2023-08-30 14:16:09,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:09,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1018 transitions. [2023-08-30 14:16:09,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:09,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 377.0) internal successors, (2262), 6 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:09,210 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 377.0) internal successors, (2262), 6 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:09,210 INFO L175 Difference]: Start difference. First operand has 96 places, 133 transitions, 926 flow. Second operand 5 states and 1018 transitions. [2023-08-30 14:16:09,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 351 transitions, 3058 flow [2023-08-30 14:16:10,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 351 transitions, 3005 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-30 14:16:10,363 INFO L231 Difference]: Finished difference. Result has 101 places, 166 transitions, 1391 flow [2023-08-30 14:16:10,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1391, PETRI_PLACES=101, PETRI_TRANSITIONS=166} [2023-08-30 14:16:10,364 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 29 predicate places. [2023-08-30 14:16:10,364 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 166 transitions, 1391 flow [2023-08-30 14:16:10,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:10,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:10,365 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:10,374 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 14:16:10,570 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,SelfDestructingSolverStorable15 [2023-08-30 14:16:10,570 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:10,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:10,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1849038336, now seen corresponding path program 1 times [2023-08-30 14:16:10,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:10,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271394849] [2023-08-30 14:16:10,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:10,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:10,903 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 14:16:10,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:10,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271394849] [2023-08-30 14:16:10,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271394849] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:16:10,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889212470] [2023-08-30 14:16:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:10,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:16:10,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:16:10,905 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 14:16:10,934 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 14:16:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:10,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 14:16:10,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:16:11,025 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:16:11,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:16:11,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:16:11,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 14:16:11,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:16:11,225 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 14:16:11,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:16:11,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889212470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:11,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:16:11,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 14:16:11,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730646639] [2023-08-30 14:16:11,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:11,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:16:11,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:11,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:16:11,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 14:16:11,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 377 [2023-08-30 14:16:11,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 166 transitions, 1391 flow. Second operand has 6 states, 6 states have (on average 163.83333333333334) internal successors, (983), 6 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:11,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:11,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 377 [2023-08-30 14:16:11,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:27,488 INFO L130 PetriNetUnfolder]: 129591/192905 cut-off events. [2023-08-30 14:16:27,488 INFO L131 PetriNetUnfolder]: For 533584/533809 co-relation queries the response was YES. [2023-08-30 14:16:28,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676051 conditions, 192905 events. 129591/192905 cut-off events. For 533584/533809 co-relation queries the response was YES. Maximal size of possible extension queue 4959. Compared 1572490 event pairs, 51167 based on Foata normal form. 636/190725 useless extension candidates. Maximal degree in co-relation 675930. Up to 181318 conditions per place. [2023-08-30 14:16:29,410 INFO L137 encePairwiseOnDemand]: 367/377 looper letters, 221 selfloop transitions, 36 changer transitions 0/265 dead transitions. [2023-08-30 14:16:29,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 265 transitions, 2543 flow [2023-08-30 14:16:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:16:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:16:29,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1108 transitions. [2023-08-30 14:16:29,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48983200707338637 [2023-08-30 14:16:29,414 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1108 transitions. [2023-08-30 14:16:29,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1108 transitions. [2023-08-30 14:16:29,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:29,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1108 transitions. [2023-08-30 14:16:29,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 184.66666666666666) internal successors, (1108), 6 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:29,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 377.0) internal successors, (2639), 7 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:29,432 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 377.0) internal successors, (2639), 7 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:29,433 INFO L175 Difference]: Start difference. First operand has 101 places, 166 transitions, 1391 flow. Second operand 6 states and 1108 transitions. [2023-08-30 14:16:29,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 265 transitions, 2543 flow [2023-08-30 14:16:58,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 265 transitions, 2535 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 14:16:58,845 INFO L231 Difference]: Finished difference. Result has 108 places, 191 transitions, 1779 flow [2023-08-30 14:16:58,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1779, PETRI_PLACES=108, PETRI_TRANSITIONS=191} [2023-08-30 14:16:58,846 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 36 predicate places. [2023-08-30 14:16:58,846 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 191 transitions, 1779 flow [2023-08-30 14:16:58,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.83333333333334) internal successors, (983), 6 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:58,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:58,847 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:16:58,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 14:16:59,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:16:59,048 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:59,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:59,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1354302554, now seen corresponding path program 1 times [2023-08-30 14:16:59,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:59,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946596604] [2023-08-30 14:16:59,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:59,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:16:59,062 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:16:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:16:59,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:16:59,074 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:16:59,074 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:16:59,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:16:59,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:16:59,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:16:59,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:16:59,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:16:59,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:16:59,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:16:59,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:16:59,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:16:59,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:16:59,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:16:59,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:16:59,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:16:59,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:16:59,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:16:59,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:16:59,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:16:59,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:16:59,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:16:59,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:16:59,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 14:16:59,078 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:59,079 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:16:59,079 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:16:59,100 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:16:59,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 249 transitions, 542 flow [2023-08-30 14:16:59,166 INFO L130 PetriNetUnfolder]: 81/639 cut-off events. [2023-08-30 14:16:59,167 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:16:59,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 639 events. 81/639 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2573 event pairs, 6 based on Foata normal form. 0/504 useless extension candidates. Maximal degree in co-relation 431. Up to 32 conditions per place. [2023-08-30 14:16:59,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 249 transitions, 542 flow [2023-08-30 14:16:59,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 249 transitions, 542 flow [2023-08-30 14:16:59,182 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:16:59,182 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 249 transitions, 542 flow [2023-08-30 14:16:59,182 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 249 transitions, 542 flow [2023-08-30 14:16:59,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 249 transitions, 542 flow [2023-08-30 14:16:59,245 INFO L130 PetriNetUnfolder]: 81/639 cut-off events. [2023-08-30 14:16:59,246 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:16:59,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 639 events. 81/639 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2573 event pairs, 6 based on Foata normal form. 0/504 useless extension candidates. Maximal degree in co-relation 431. Up to 32 conditions per place. [2023-08-30 14:16:59,274 INFO L119 LiptonReduction]: Number of co-enabled transitions 36320 [2023-08-30 14:17:02,656 INFO L134 LiptonReduction]: Checked pairs total: 89135 [2023-08-30 14:17:02,656 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-08-30 14:17:02,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:17:02,659 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;@25fb4dba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:17:02,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:17:02,660 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 14:17:02,661 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:17:02,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:02,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:17:02,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:17:02,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:02,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1643374265, now seen corresponding path program 1 times [2023-08-30 14:17:02,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:02,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799009483] [2023-08-30 14:17:02,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:02,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:02,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:02,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799009483] [2023-08-30 14:17:02,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799009483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:02,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:02,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:17:02,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115189237] [2023-08-30 14:17:02,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:02,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:02,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:02,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:02,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:02,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 447 [2023-08-30 14:17:02,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 111 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:02,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:02,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 447 [2023-08-30 14:17:02,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand